Piper PA-44-180 SEMINOLE Maintenance Manual
  1. Manuals
  2. Brands
  3. Piper Manuals
  4. Tools
  5. SEMINOLE PA-44-180
  6. Maintenance manual
Piper PA-44-180 SEMINOLE Maintenance Manual

Piper PA-44-180 SEMINOLE Maintenance Manual

Hide thumbs Also See for PA-44-180 SEMINOLE:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
Table Of Contents
882
Table of Contents

Advertisement

Quick Links

See also: Information Manual
SEMINOLE
MAINTENANCE MANUAL
CARD 1 OF 4
PA-44-180 SEMINOLE
PA-44-180T TURBO SEMINOLE
PIPER AIRCRAFT CORPORATION
(PART NUMBER 761 664)
June 20.1995
1A1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the PA-44-180 SEMINOLE and is the answer not in the manual?

Questions and answers

Related Manuals for Piper PA-44-180 SEMINOLE

Summary of Contents for Piper PA-44-180 SEMINOLE

  • Page 1 SEMINOLE MAINTENANCE MANUAL CARD 1 OF 4 PA-44-180 SEMINOLE PA-44-180T TURBO SEMINOLE PIPER AIRCRAFT CORPORATION (PART NUMBER 761 664) June 20.1995...
  • Page 2 AIRPLANE MAINTENANCE MANUAL INTRODUCTION. This PIPER AIRCRAFT Maintenance Manual is prepared in accordance with the GAMA (General Aviation Manufacturers Association) format. This maintenance manual is divided into various Groups which enable a broad separation of contents (Chapters) within each group.
  • Page 3 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL VENDOR PUBLICATIONS. ENGINE: Overhaul Manual = TEXTRON LYCOMING - OVERHAUL MANUAL DIRECT DRIVE ENGINE - P/N 60294-7 Textron Lycoming Division Williamsport, Pa 17701 Parts Catalog = TEXTRON LYCOMING —...
  • Page 4 Engineered Fabrics Division Rockmart, Georgia 30153-0548 Rockmart, Georgia 30153 PIPER PUBLICATIONS. AUTOFLIGHT: AutoControl IIIB Service Manual = Piper P/N 761 502 AutoControl IIIC Service Manual = Piper P/N 761 602 PA-44-180/180T Parts Catalog = Piper P/N 761 663 Inspection Reports =...
  • Page 5 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS The Maintenance Manual information incorporated in this set of Aerofiche cards has been arranged in accordance with the general specifications of Aerofiche adopted by the General Aircraft Manufacturer's Association, (GAMA).
  • Page 6 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS (cont) Effectivity Publication Date Aerofiche Card Effectivity ORG791212 December 12, 1979 1, 2, and 3 PR800822 August 22, 1980...
  • Page 7 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID NO. AIRWORTHINESS 1A18 TIME LIMITS/MAINT CHECKS 1A21 DIMENSIONS AND AREAS 1B14...
  • Page 8 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE (cont) SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID N0. LIGHTS NAVIGATION & PITOT/STATIC 2I16 OXYGEN VACUUM ELECTRICAL/ELECTRONIC PANELS AND...
  • Page 9 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS FIGURE NO. SUBJECT GRID NO. 6-1. Three View 1B19 6-2. Station References 1B20 6-3. Access Plates and Panels 1B22 7-1.
  • Page 10 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 21-19. Exploded View - Combustion Air Blower and Motor Assembly 21-20. Suggested Setup of Heater Operation Test 1G10 21-21.
  • Page 11 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 27-2. Control Cable Inspection Technique 27-3. Cable Wear Pattern 27-4. Internal Cable Wear 27-5.
  • Page 12 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 29-8. End Gland Locking Device (Main Gear) 2C20 29-9. Hydraulic Lines Installation 2C23 30-1.
  • Page 13 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 32-23. Adjustment of Main Gear Down Limit Switch 2H23 32-24. Adjustment of Nose Gear Down Limit Switch 2H23 32-25.
  • Page 14 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 61-2. Propeller Installation 61-3. Propeller Governor 61-4. Adjustment of Propeller Control 61-5. Synchrophaser System Installation 61-6.
  • Page 15 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 74-19. Lifting Inner End of Spring 3G11 74-20. Checking Harness Leads Continuity 3G13 74-21.
  • Page 16 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS CHART NO. SUBJECT GRID NO. Leading Particulars and Principal Dimensions 1B16 1201 Thread Lubricants 2001 Maximum Distance Between Supports for Fluid Tubing...
  • Page 17 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS (cont) CHART NO. SUBJECT GRID NO. 7101 Troubleshooting (Engine) 3D24 7301 Fuel Pressure Sender Test Specifications 3F12 7302 Troubleshooting (Fuel Pressure Gauge)
  • Page 18 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C H A P T E R A I RW O R T H I N E S S L I M I TAT I O N S...
  • Page 19 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 4 - AIRWORTHINESS LIMITATIONS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 4-00-00 AIRWORTHINESS LIMITATIONS 1A20 4-01-00 General 1A20 8-81 4 - Cont./ Eff e c .
  • Page 20 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AIRWORTHINESS LIMITATIONS. GENERAL. The airworthiness limitations is FAA approved and specifies inspections and maintenance required under Parts 43, 16 and 91.163 of the Federal Aviation Regulations.
  • Page 21 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C H A P T E R TIME LIMITS / MAINTENANCE CHECKS 1A21...
  • Page 22 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 5 -TIME LIMITS/MAINTENANCE CHECKS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 5-00-00 GENERAL 1A24 5-10-00 TIME LIMITS 1A24 5-11-00...
  • Page 23 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1A23...
  • Page 24 (O). If an item is not entirely accessible or must be removed, refer to the applicable chapter of this manual for instructions on how to gain access to remove the item. When performing inspections, use inspection forms P/N 230 963 furnished by the Piper Factory Service Department, available through Piper Dealers or Distributors.
  • Page 25 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL SCHEDULED MAINTENANCE CHECKS PERIODIC INSPECTIONS —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 A. PROPELLER GROUP 1. Inspect spinner and back plate for cracks......
  • Page 26 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 B. ENGINE GROUP (CONT) 4 . Clean suction oil strainer at oil change (Check strainer for f o reign particles)..............
  • Page 27 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature if Inspection Inspection time (hrs) 1000 B. ENGINE GROUP (CONT) 1 7 . Inspect ignition harness and insulators for high tension l e a kage and continuity............
  • Page 28 45. Inspect exhaust stacks, connections and gaskets (Replace as required and refer to latest Piper Service Letter No. 860)..46. Check operation of alternate air door........47. Inspect muffler heat exchanger and baffles......
  • Page 29 8. Inspect control wheels, column, pulleys and cables (See Note 24)....9. Inspect condition of flap control cable and cable attachment bolt (See Note 24. Refer to latest revision of Piper Service Bulletin No. 965.)..10. Check landing, navigation, cabin and instrument lights........
  • Page 30 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 D. CABIN GROUP (cont) 12. Inspect gyro operated instruments and electric turn and bank indicator (Overhaul or replace as required ..............
  • Page 31 1. Remove inspection plates and fairings............2 . Inspect surfaces and tips for damage, loose rivets, and condition of w a l kway......................3. Inspect aileron hinges and attachments (Refer to latest revision of Piper Service Bulletin No. 725)................5-21-00...
  • Page 32 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 F. WING GROUP (cont) 4. Inspect aileron control stops to ensure stops have not loosened and lock- nuts are tight....................
  • Page 33 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 G. LANDING GEAR GROUP (cont) 13. Inspect brake lines and retaining clamps............14. Inspect condition of nose gear centering spring..........
  • Page 34 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PERIODIC INSPECTIONS (cont.) —Note— Refer top Notes 1, 2, 3, and 4 performing inspections. Nature of Inspection Inspection time (hrs) 1000 H. OPERATIONAL INSPECTION (cont) 18. Check operation of flaps................19. Check manifold pressure indicating..............
  • Page 35 PERIODIC INSPECTIONS. (cont.) NOTES: Refer to the last card to the Piper - Parts Price List - Aerofiche, for a checklist of current revision date to Piper Inspection Reports and Manuals. All inspections or operations are required at each of the inspection intervals as indicated by a (O).
  • Page 36 T h e r e a f t e r, perform dye-penetrant inspection each 100 hours time-in-service. After main gear trun- nion housing has reached 2000 hours time-in-service, dye-penetrant inspection must be performed each 10 hours time-in-serv i c e. Refer to latest revision of Piper Service Bulletin No. 787(B), and Chapter 20 of PA-44-180/180T Maintenance Manual.
  • Page 37 The programmed inspection was designed to permit the best utilization of the aircraft, by scheduling inspections through the use of a planned inspection schedule. This programmed inspection schedule has been prepared in a manual form which is available from Piper Service Sales - under Piper Part Number 761 733. UNSCHEDULED MAINTENANCE CHECKS.

  • Page 38: Dimensions And Areas

    C H A P T E R DIMENSIONS AND AREAS 1B14...
  • Page 39 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 6 - DIMENSIONS AND AREAS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 6-10-00 DIMENSIONS 1B16 9R 6-95 6-11-00 STATION REFERENCE LINES...
  • Page 40 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DIMENSIONS. The principle airplane dimensions are shown in Figure 6-1 and are listed in Chart 601. CHART 601. LEADING PARTICULARS AND PRINCIPLE DIMENSIONS...
  • Page 41 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 601. LEADING PARTICULARS AND PRINCIPLE DIMENSIONS (cont) MODEL PA-44-180 / 180T PROPELLER TWO BLADE THREE BLADE Manufacturer Hartzell Hartzell Hub and Blade Model:...
  • Page 42 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 601. LEADING PARTICULARS AND PRINCIPLE DIMENSIONS (cont) MODEL PA-44-180 / 180T LANDING GEAR Nose Wheel Travel 21° left, 21° right 27° left, 27° right...
  • Page 43 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL (3, 05m) 1 0 ' (2, 17m) (2, 54m) 7' 1.56" 8' 3.96" (0, 64 m) 2' 1.20" (3, 84 m) 12' 7.14"...
  • Page 44 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STATION REFERENCE LINES. In order to facilitate the location of various components of the airplane which require maintenance and servicing, a method utilizing fuselage station, wing station or buttock line (BL), and waterline (WL) designations is frequently employed in this manual.
  • Page 45 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ACCESS AND INSPECTION PROVISIONS. The access and inspection provisions for the airplane are shown in Figure 6-3. The component to be serviced or inspected through each opening is identified in the illustration.
  • Page 46 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OUTER SURFACE INNER SURFACE STABILATOR ATTACH. HYD. PUMP STABILATOR BALANCE WEIGHT AVIONICS STABILATOR TRIM DRIVE & LINKAGE AUTOPILOT TRIM SERVO STABILATOR PUSH ROD...
  • Page 47 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2315 33 32 NAV LIGHT WIRING ELECTRIC FUEL PUMP WING TIP LIGHTNING BONDING FUEL LINES AILERON BALANCE WEIGHT FINGER STRAINER PITOT STATIC HEAD...
  • Page 48 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1B24...

  • Page 49: Lifting And Shoring

    C H A P T E R LIFTING AND SHORING...
  • Page 50 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 7 - LIFTING AND SHORING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 7-10-00 JACKING 7 - Cont. /Eff e c .
  • Page 51 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 52 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2284 Figure 7-1. Jacking JACKING. Jack the airplane as specified to perform various service operations. Proceed as follows: 1. Place the jacks under the jack pads on the wing front spar.
  • Page 53 C H A P T E R LEVELING AND WEIGHING...
  • Page 54 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 8 - LEVELING AND WEIGHING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 8-10-01 LEVELING 8-80 8-20-01 WEIGHING 8 - Cont. /Eff e c .
  • Page 55 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 56 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LEVELING. All configurations of the airplane are provided with a means for longitudinal and lateral leveling. The airplane may be leveled while on jacks, during the weighing procedure while the wheels are on the ground. To level the airplane for purposes of weighing or rigging, the following procedures may be used: 1.
  • Page 57 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL WEIGHING. (Refer to Figure 8-2) The airplane may be weighed by the following procedure: 1. Position a scale and ramp in front of each of the three wheels.
  • Page 58 C H A P T E R TOWING AND TA X I I N G 1C10...
  • Page 59 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 9 - TOWING AND TAXIING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 9-10-00 TOWING 1C13 9-20-00 TAXIING 1C13 9 - Cont. /Ef f e c .
  • Page 60 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 1C12...
  • Page 61 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TOWING. — CAUTION — WHEN TOWING WITH POWER EQUIPMENT, DO NOT TURN THE NOSE GEAR IN EITHER DIRECTION BEYOND ITS STEERING RADIUS LIMITS AS THIS WILL RESULT IN DAMAGE TO THE NOSE GEAR AND STEERING MECHANISM.
  • Page 62 C H A P T E R PARKING AND MOORING 1C14...
  • Page 63 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 10 - PARKING AND MOORING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 10-10-00 PARKING 1C17 10-20-00 MOORING 1C17 10-21-00...
  • Page 64 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PARKING. When parking the airplane, insure that it is sufficiently protected against adverse weather conditions and presents no danger to other aircraft. When parking the airplane for any length of time or overnight, it is recommended that it be moored.
  • Page 65 C H A P T E R REQUIRED PLACARDS 1C17...
  • Page 66 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHAPTER 11 - REQUIRED PLACARDS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 11-00-00 GENERAL 1C19 11-20-00 PLACARDS AND MARKINGS 1C19 9R 6-95 11 - Cont./Effec. Page -1 Reissued: July 30, 1994 1C18...
  • Page 67 PLACARDS AND MARKINGS. NAMEPLATE - PIPER SEMINOLE 48. PLACARD - FLAP LEVER 91. PLACARD - CIRCUIT PROTECTOR, MEDALLION - PIPER LOGO 49. MEDALLION - PIPER, CONTROL PROPELLER SYNCHROPHASER PLACARD - FLAP WARNING WHEEL 92. PLACARD - HYDRAULIC FLUID PLACARD - OPEN57.PLACARD - 50.
  • Page 68 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL INSTRUMENT PANEL APLICABLE ONLY TO PA-44-180, S/N’s 44-7995001 THRU 44-8195026, AND PA-44-180T Figure 11-1. Placards and Decals (Sheet 2 of 2) 11 -20-00 Page 11-02 Revised: June 20, 1995 1C20...
  • Page 69 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL Press Test Va135AT3800LBS (SEE POH) Vlo140DN109UP Vle140 MAX DEMOXWIND17KT WINTERIZATION HEATER KIT REMOVED GND UP N___________ MAINT Closed Open INTAKE TEMP Warmer HEATER SWITCH LIGHTS Gear Hyd Pump L Alt L Eng L Fuel...
  • Page 70 C H A P T E R S E RV I C I N G 1C22...
  • Page 71 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHAPTER 12 -SERVICING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 12-00-00 GENERAL 12-10-00 REPLENISHING 1D20 12-11-00 Fuel System 8-80 12-11-01 Filling Fuel Tanks 2-81 12-11-02 Draining Moisture From Fuel System 2-81 12-11-03...
  • Page 72 PIPER AIRCRAFT PA-28-180/180T AIRPLANE MAINTENANCE MANUAL CHAPTER 12 -SERVICING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 12-20-00 SCHEDULED SERVICING (cont) — 12-28-00 Cleaning (cont) — 12-28-06 Carpets 1D12 12-29-00 Lubrication Instructions 1D13 12-29-01 Application of Oil 1D13 12-29-02...
  • Page 73 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This chapter contains routine handling and servicing procedures that are most frequently encountered. Frequent reference to this section will aid the individual by providing information such as the location of various components, ground handling procedures, routine service procedures and lubrication.
  • Page 74 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REPLENISHING. FUEL SYSTEM. At intervals of 50 hours or 90 days, whichever comes first, clean the fuel filter pack. Remove and clean the filters in accordance with the instructions outlined in Chapter 28.
  • Page 75 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — Note — Add one six ounce can of LW-16702 to the engine oil every 50 hours or at each oil change in accordance with the latest revision of Lycoming Service Bulletin No. 446.
  • Page 76 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — Note — Add one six ounce can of LW-16702 to the engine oil every 50 hours or at each oil change in accordance with the latest revision of Lycoming Service Bulletin No. 446.
  • Page 77 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — WARNING — DO NOT RELEASE AIR BY REMOVING THE STRUT VA LVE CORE OR FILLER PLUG. DEPRESS THE VA LVE CORE PIN UNTIL THE STRUT CHAMBER PRESSURE HAS DIMINISHED.
  • Page 78 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 9. Reinstall the valve core in the filler plug — Note — A completely empty strut will take 21 +/- 1 ounces of MIL-H-5606 hydraulic fluid.
  • Page 79 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INFLATING OLEO STRUTS. After making certain that an oleo strut has sufficient fluid. attach a strut pump to the air valve and inflate the oleo strut.
  • Page 80 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DRAINING BRAKE SYSTEM. To drain the brake system, connect a hose to the bleeder fitting on the bottom of the cylinder and place the other end of the line in a suitable container.
  • Page 81 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HYDRAULIC SYSTEM. The hydraulic pump and landing gear actuating cylinders should be checked for leaks, tightness of line fittings and general condition The cylinder rods are to be free of all dirt and grit. To clean the rods, use an oil soaked rag and carefully wipe them, All the hydraulic lines should also be checked for leaks, kinks.
  • Page 82 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SERVICE INSTRUCTIONS (INSPECTION AND REPLACEMENT). 1. The air filter must be inspected at least once every 50 hours. Under extremely adverse operating conditions, it must be inspected more frequently.
  • Page 83 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. With the engine cowlings removed, spray or brush the engines with solvent or a mixture of solvent and degreaser as desired. It may be necessary to brush areas that were sprayed, where heavy grease and dirt deposits have collected in order to clean them.
  • Page 84 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL WINDSHIELD AND WINDOWS. 1. Remove dirt, mud, etc., from exterior surfaces with clean water. 2. Wash with mild soap and warm water or an aircraft plastic cleaner. Use a soft cloth or sponge using a straight rubbing motion.
  • Page 85 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LUBRICATION INSTRUCTIONS. Proper lubrication procedures are of immeasurable value both as a means of prolonging the service life of the airplane and as a means of reducing the frequency of extensive and expensive repairs. The periodic...
  • Page 86 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Remove wheel bearings from the wheel hub and clean thoroughly with a suitable solvent. When repacking with grease, be sure the lubricant enters the space between the rollers in the retainer ring.
  • Page 87 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 12-2. Lubrication Chart (Landing Gear, Main) (cont) 12-29-03 Page 12-15 Revised: June 20, 1995 1D15...
  • Page 88 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMPONENT LUBRICANT FREQUENCY NOSE WHEEL BEARINGS - SEE SPECIAL TEXACO MARFAX ALL INSTRUCTION 3 AND NOTE 2 PURPOSE GREASE OR MOBIL GREASE 77 (OR MOBIL EP2...
  • Page 89 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A589 A588 2288 A580 Figure 12-3. Lubrication Chart (Landing Gear, Nose) (cont) 1 2 - 2 9 - 0 3 Page 12-17...
  • Page 90 PIPER AIRCRAFT PA - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — CAUTION — DO NOT LUBRICATE CONTROL WHEEL SHAFT OR BUSHING. CLEAN ONLY WITH ALCOHOL OR OTHER SUITABLE SOLVENT. — CAUTION — DO NOT OVER-LUBRICATE COCKPIT CONTROLS.
  • Page 91 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SKETCH A SKETCH B SKETCH C Figure 12-4. Lubrication Chart (Control System, Part 1) (cont) 12-29-03 Page 12-19 Revised: June 20, 1995...
  • Page 92 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMPONENT LUBRICANT FREQUENCY 1. DOOR & COWL SEALS - SEE SPECIAL INSTRUCTION 6 CARBON DIOXIDE RELEASE AGENT DRY LUBRICANT MS-122N/CO 2 AS REQUIRED 2.
  • Page 93 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMPONENT LUBRICANT FREQUENCY RUDDER HINGE BEARINGS, RUDDER TAB STABILATOR TAB HINGE PINS - SEE SPECIAL INSTRUCTIONS 2 AND 6. MIL-L-7870 100 HRS...
  • Page 94 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SKETCH A SKETCH B SKETCH C Figure 12-6. Lubrication Chart (Control System, Part 2) (cont) 12-29-03 Page 12-22 Revised: June 20, 1995...
  • Page 95 Do not over-lubricate cockpit controls. NOTES Lubricate fuel selector valve as required. Refer to latest revison of Piper Service Letter No. 351. Fuel System - Service Regularly - Fuel Pump Strainer Injector Screen - Filter Bowl - Quick Drain Unit.
  • Page 96 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A590 B874 A403 Figure 12-7. Lubrication Chart (Power Plant & Propeller) (cont) 1 2 - 2 9 - 0 3 Page 12-24...
  • Page 97 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 1201. THREAD LUBRICANTS TYPE OF LINE TYPE OF LUBRICANT Brakes MIL-H-5606 Freon TT-A-580 or MIL-T-5544, Anti-Seize Compound Fuel MIL-T-5544, Anti-Seize, Graphite Petrolatum...
  • Page 98 C H A P T E R S TANDARD PRACTICES/ A I R F R A M E...
  • Page 99 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 20 - STANDARD PRACTICES / AIRFRAME TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 20-00-00 STANDARD PRACTICES - AIRFRAME 1E14...
  • Page 100 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STANDARD PRACTICES - AIRFRAME. TORQUE WRENCHES. Torque wrenches should be checked daily and calibrated by means of weights and a measured lever arm to make sure that inaccuracies are not present.
  • Page 101 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL METHOD OF INSTALLING ROD END BEARINGS. DAMAGE HERE WRONG DAMAGE HERE IMPROPER TOOL (RESULTING IN LOCKED BALL) A SPECIAL WRENCH MAY BE...
  • Page 102 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHERRYLOCK RIVETS, REMOVAL. (Refer to Figure 20-3.) Should it be necessary to remove an installed cherrylock rivet, the following procedures are recommended.
  • Page 103 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2001. MAXIMUM DISTANCE BETWEEN SUPPORTS FOR FLUID TUBING DISTANCE BETWEEN SUPPORTS (IN.) TUBE O.D. (IN.) ALUMINUM ALLOY STEEL 9 1/2 11-12...
  • Page 104 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B362 MIL-H-8794:Size-6-2/68-Mfg Symbol MIL-M-5593-6-4/68 Mfg AR-194 MIL-H-6000-Size-3/4/68 Mfg Symbol Mfg Symbol MIL-H-7938-Size--3-4/88 CONDUIT DE-ICING ELECTRICAL HYDRAULIC COMPRESSED CONDUIT INSTRUMENT DE-ICING HYDRAULIC ELECTRICAL...
  • Page 105 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AIRCRAFT FINISH CARE (CLEANING). EXTERIOR SURFACES. The airplane should be washed with a mild soap and water, harsh abrasives or detergents used on painted or plastic surfaces could make scratches or cause corrosion of metal surfaces.
  • Page 106 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CARPETS. Use a small whisk broom or vacuum to remove dirt. For soiled spots, use a non-inflammable dry-cleaning fluid. ENGINE COMPARTMENT. Before cleaning the engine compartment, place strips of tape on the magneto vents to prevent any solvent from entering these units.
  • Page 107 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LANDING GEAR. Before cleaning the landing gear, place a plastic cover or similar material over the wheel and brake assembly, 1. Place a pan under the gear to catch waste.
  • Page 108 C H A P T E R E N V I R O N M E N TAL SYSTEM 1E12...
  • Page 109 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 21 - ENVIRONMENTAL SYSTEM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 21-00-00 GENERAL 1E16 21-01-00 Description and Principles of Operation...
  • Page 110 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 21 - ENVIRONMENTAL SYSTEM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 21-40-00 HEATING (cont) — 21-43-00 Maintenance Service (cont) —...
  • Page 111 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 21 - ENVIRONMENTAL SYSTEM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 21-50-00 COOLING (PA-44-180T ONLY) 1G15 A 8-80 21-51-00...
  • Page 112 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. Instructions for maintaining the cabin vent and heating systems are contained in this chapter. Also incorporated in this chapter are instructions for the inspection and operation of the 45,000 BTU heater unit, defroster, and ventilation system.
  • Page 113 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2101. TROUBLESHOOTING (JANITROL HEATER) Trouble Cause Remedy Heater fails to light. Heater switch or circuit Turn on heater switch or breaker off.
  • Page 114 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2101. TROUBLESHOOTING (JANITROL HEATER) (cont) Trouble Cause Remedy Heater fails to light. (cont) Combustion air pressure switch Check for low blower output open.
  • Page 115 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2101. TROUBLESHOOTING (JANITROL HEATER) (cont) Trouble Cause Remedy Heater fires but burns Insufficient fuel supply. Inspect fuel supply to heater, unsteadily.
  • Page 116 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2101. TROUBLESHOOTING (JANITROL HEATER) (cont) Trouble Cause Remedy Heater starts then goes out, Inoperative or chattering Adjust or replace switch. (cont) combustion air pressure switch.
  • Page 117 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISMANTLING OF BLOWER ASSEMBLY. 1. Remove the hose duct from the forward edge of the blower assembly by removing the nuts, washers and screws.
  • Page 118 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2102. BLOWER SYSTEM WIRE COLOR CODES MOTOR WIRES AIRCRAFT WIRES YY75062 ESB - Universal Aircraft Nos. Elect. Company Harness Nos. Ground...
  • Page 119 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 12. With the heater in operation, check the pressure gauge. The gauge should read from 6.5 to 7.5 psi, if the heater is running and the pressure indicated is more or less than required, adjust the regulator accordingly.
  • Page 120 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2311-A 1. COMBUSTION HEATER 2. AIR DISTRIBUTION MANIFOLD 3. AIR DISTRIBUTION VALVE 4. DEFROSTER OUTLETS 5. CONTROL LEVERS 6. DEFROSTER CONTROL CABLE 7.
  • Page 121 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2276 FORWARD SEAL COMBUSTION AIR BLOWER COMBUSTION AIR INTAKE IGNITION UNIT AIR DUCT LIMIT SWITCH CYCLING SWITCH EXHAUST OUTLET HEATER JACKET FUEL SOLENOID SHROUD...
  • Page 122 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HIGH VELOCITY COMBUSTION AIR WHIRLING FLAME SPARK PLUG INLET SOLENOID VALVE HEATED AIR FUEL INLET EXHAUST GASES FRESH AIR FROM BLOWER Figure 21-3. Diagramatic Cutaway of Heater to Show Whirling Flame Action FUEL REGULATOR AND SHUTOFF VALVE.
  • Page 123 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT SCREW Figure 21-4. Fuel Regulator and Shutoff Valve CONTROL CABLE A360 ATTACHMENT 40° 140° Figure 21-5. Top View - Duct Switch...
  • Page 124 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2285 VIEW A-A 1. FWD. SEAL 2. AFT FLANGE 3. ARM (CAM) 4. VALVE ASSY. 5. SWITCH V3-1 = FAN 6. SWITCH V3-1 = HEATER 7.
  • Page 125 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Set the temperature control lever to the desired temperature setting. This controls the duct switch. — Note — If this control is set for ground operating comfort, it may be necessary to reposition it after being airborne, since ram air will increase the ventilating airflow and heater output.
  • Page 126 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 100 HOUR INSPECTION. The mandatory 100 Hour Inspection shall be conducted on new heaters or overhauled heaters with a new combustion tube assembly upon accumulation of 500 heater operating hours or twenty four months, whichever occurs first, and thereafter at intervals not to exceed 100 heater operating hours or twenty four months, whichever comes first.
  • Page 127 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 7. Disconnect the fuel and water drains from the bottom of the heater and allow them to slide down. 8. Disconnect the combustion air blower inlet hose from the blower assembly by removing the cotter key and clevis pin at the blower.
  • Page 128 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOTE THIS WIRING DIAGRAM IS FOR REFERENCE PURPOSES ONLY. REFER TO CHAPTER 91 FOR AIRCRAFT WIRING. Figure 21-7. Wiring Diagram 2 1 - 4 3 - 0 7...
  • Page 129 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOTE THIS WIRING DIAGRAM IS FOR REFERENCE PURPOSES ONLY. REFER TO CHAPTER 91 FOR AIRCRAFT WIRING. Figure 21-8. Primary Power Circuit 2 1 - 4 3 - 0 7...
  • Page 130 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOTE THIS WIRING DIAGRAM IS FOR REFERENCE PURPOSES ONLY. REFER TO CHAPTER 91 FOR AIRCRAFT WIRING. Figure 21-9. Starting Power Circuit VENT BLOWER POWER CIRCUIT CHECK.
  • Page 131 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HEATER POWER CIRCUIT CHECK. 1. With the HEATER SWITCH in the HEAT position, voltage should be present at the following locations: (Refer to Figure 21-9) —...
  • Page 132 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1 IN. HEX S.A.E. 1112 SCREW STOCK 0.640 DIA. DRILL CHAMFER 45° X 1/16 NEAR END ONLY MOMENTARY 3.00 INCH THREAD 18 MM - 1.5 MM PITCH...
  • Page 133 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. SPARK PLUG 2. SEATING SURFACE 3. COMBUSTION TUBE ASSY 4. GROUND ELECTRODE 5. JACKET ASSEMBLY 6. COMBUSTION HEAD ASSY 7. MEASURE 8.
  • Page 134 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Unscrew and remove the high voltage lead connector at the spark plug. Exercise care to avoid fouling or damaging the connector. Remove the grommet.
  • Page 135 AIRPLANE MAINTENANCE MANUAL Method III. A. Fabricate or purchase from Piper the special tool from dimensions given in Figure 21-22. B. Install the threaded end of the tool into the spark plug hole. C. Slide the rod of the tool into the combustion head until it contacts the ground electrode.
  • Page 136 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A. Disconnect the primary wire from the primary terminal of the ignition assembly. B. Carefully unscrew and disconnect the high voltage ignition cable at the spark plug. Exercise care to avoid fouling or damaging the connector.
  • Page 137 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A269 1. COVER ASSEMBLY 2. IGNITION BOX 3. CLAMP 4. IGNITION COIL 5. VIBRATOR Figure 21-13. Ignition Unit Assembly VIBRATOR. The vibrators should be replaced after 250 hours of operation. This schedule applies equally to vibrators installed in new units as well as new vibrators installed in ignition units that have been in service.
  • Page 138 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2103. INSPECTION (IGNITION UNIT) Index No. Nomenclature Inspection Cover Assembly Inspect for security of lead assembly to cover. Ignition cable, grommet, terminal and connector for carbon tracks, cracks or distortion.
  • Page 139 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMBUSTION AIR PRESSURE SWITCH. (Refer to Figure 21-18) 1. Removal: A. Disconnect electrical leads from the terminals of the combustion air pressure switch, being sure to mark them for proper reassembly.
  • Page 140 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 0 - 15 PSIG 0 - 60 PSIG GAGE GAGE SUPPLY REGULATOR FLOW FUEL REGULATOR SUPPLY FUEL NOZZLE ELECTRICAL POWER SUPPLY Figure 21-14. Test Setup for Fuel Regulator and Shutoff Valve INSTALLATION OF FUEL REGULATOR.
  • Page 141 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A932 BOTTOM 1. PUMP, BODY O-RING 2. TUBE, PLUNGER WASHER 3. FILTER RETAINER 4. PLUNGER MAGNET 5. SPRING GASKET, COVER 6. CUP VALVE COVER Figure 21-15.
  • Page 142 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSPECTION AND REPAIR OF PUMP. 1. Disassemble the pump. 2. The filter usually comes off with the cover; it may stick inside the fuel pump. Carefully remove the filter and replace it, if distorted.
  • Page 143 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OVERHAUL INSTRUCTIONS. The heater assembly shall be overhauled after 1000 hours or whenever the pressure decay test requirement cannot be met. The heater should be removed from the aircraft disassembled, all parts thoroughly inspected and necessary repairs and/or replacements made prior to reassembly.
  • Page 144 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 15. Reach inside the inlet end of the jacket assembly with a 3/4 inch open-end wrench, and while holding the fuel-tube fitting at the jacket, use a 3/4 inch deep socket to remove the elbow, nut, washer, gasket and fuel shroud.
  • Page 145 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL .19 DIA. HOLES (6 EQUALLY SPACED) RUBBER STOPPER 3.62 4.20 DIA. DIA. DRILL OUT TO .125 NECESSARY THICK STOCK DIAMETER COMBUSTION HEAD...
  • Page 146 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. Clean individual metal parts (except those parts containing switches and electrical wiring) and the combustion tube assembly by immersing them in dry-cleaning solvent, such as Stoddard solvent (Federal Specification P-D-680).
  • Page 147 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSPECTION OF REMAINING COMPONENTS. (Refer to Figure 21-18) 1. Discard all rubber parts such as grommets, gaskets, etc. These items should always be replaced at overhaul.
  • Page 148 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 12. Remove the brushes, one at a time, from the ventilating air blower motor by removing the brush cap and carefully withdrawing the brush from its guide. Remove foreign material from the brush guide and commutator with a stream of filtered compressed air.
  • Page 149 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Test the combustion air pressure switch as follows: A. Connect an adjustable air pressure line that can be controlled in a range of zero to 5.0 psi (maximum) of water to the switch opening with a water manometer and needle valve in the line ahead of switch.
  • Page 150 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. HEATER ASSEMBLY 15. BRUSH ASSEMBLY - MOTOR 29. GASKET 2. IGNITION ASSEMBLY 16. ADAPTER 30. GASKET 3. VIBRATOR - IGNITION 17. FAN - VENT AIR BLOWER 31.
  • Page 151 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REPAIR OF COMBUSTION TUBE ASSEMBLY. — Note — No weld or braze repairs are authorized. REASSEMBLY OF HEATER. (Refer to Figure 21-18) 1.
  • Page 152 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1971 1. COMBUSTION AIR BLOWER AND MOTOR ASSEMBLY 12. CAP - BRUSH ASSEMBLY 2. ADAPTER ASSEMBLY - BLOWER INLET 13. MOUNT - COMBUSTION AIR BLOWER SUPPORT 3.
  • Page 153 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 11. Install a new gasket and the combustion head in the combustion tube and secure with the six screws. 12. Insert the fitting on end of nozzle fuel tube through the opening in jacket and attach the nozzle holder to the combustion head assembly with the two screws.
  • Page 154 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL VENTILATING AIR MANOMETER COMBUSTION AIR BLOWER COMBUSTION AIR MANOMETER 24" MIN. COMBUSTIONAIR THERMOMETER PRESSURE SWITCH OVERHEAT (LIMIT) SWITCH FUEL IN (FROM PUMP)
  • Page 155 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TEST PROCEDURE. GENERAL INFORMATION. A test of all components should have been made after overhaul to insure proper operation. Some shops may not have complete testing facilities for measuring airflows, pressure drops, and other factors which would be accomplished in a laboratory-type test.
  • Page 156 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 7. Observe the manometer connected to the ventilating air pressure tap, which should show a reading of 1.1 inches of water (minimum) at rated voltage.
  • Page 157 6.00 SLIP FIT (.255 1.50 DIA. HOLE) 18 MM THREAD NOTE This tool can be purchased .875 HEX STOCK from Piper Aircraft Corporation under Piper .250 DIA. ROD 3.444 Part Number 55998-2. UNDER CUT .010 MARK WITH 3.387 BLACK PAINT MATERIAL CAN BE SAE TYPE 303, 321 OR 347 ST.
  • Page 158 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TERMINAL BLOCK TOP VIEW IGNITION ASSY SCREW HOUR METER CLAMPS BRACKET SCREW (MS35206-242) LIGHT (NOT USED) HEATER END VIEW SIDE VIEW Figure 21-23. Heater Hourmeter Installation...
  • Page 159 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COOLING. (PA-44-180T ONLY.) GENERAL. AIR CONDITIONING SYSTEM DESCRIPTION AND PRINCIPLES OF OPERATION. The air conditioning installation is a recirculating, independent unit consisting of a compressor, evaporator, condenser, receiver-dehydrator, circulating fan, thermal expansion valve and related plumbing.
  • Page 160 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2104. TROUBLESHOOTING (AIR CONDITIONER) Gauge Indication Probable Causes Remedy High discharge pressure Overcharge of refrigerant Purge excess refrigerant Air in system Check for leaks.
  • Page 161 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2104. TROUBLESHOOTING (AIR CONDITIONER) Gauge Indication Probable Causes Remedy High suction pressure. Capillary bulb clamp loose on Clean contact surface of suction line.
  • Page 162 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2104. TROUBLESHOOTING (AIR CONDITIONER) Trouble Causes Remedy System produces no cooling, Mechanical. (cont.) Loose or broken drive belt. Replace drive belts and/or tighten to specifications.
  • Page 163 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2104. TROUBLESHOOTING (AIR CONDITIONER) Trouble Causes Remedy System will not produce Electrical (cont.) sufficient cooling. (cont.) Insufficient air circulation over Clean condenser coils.
  • Page 164 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2104. TROUBLESHOOTING (AIR CONDITIONER) Trouble Causes Remedy Excessively noisy system. (cont.) Electrical. Compressor noisy. Check mountings and repair; remove compressor for service replacement.
  • Page 165 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B952 REFRIGERANT LINE FITTING TORQUES FITTING SIZE TORQUE-IN. LBS. 1. COMPRESSOR ASSEMBLY 2. EVAPORATOR ASSEMBLY 3. CONDENSER ASSEMBLY 4. GROMMET Figure 21-24. Air Conditioning System Installation...
  • Page 166 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2105. TEMPERATURE PRESSURE CHART Evaporator Pressure Evaporator High Pressure Ambient Gauge Reading Temperature Gauge Reading Temperature p.s.i. °F. p.s.i. °F. 10.1 11.2...
  • Page 167 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MALFUNCTION DETECTION. The detection of system malfunction largely depends on the mechanic's ability to interpret the gauge pressure readings into system problems. A system operating normally will have a low side gauge pressure reading that will correspond with the temperature of the refrigerant evaporating in the evaporator, allowing for a few degrees temperature rise due to loss in the tube walls and fins.
  • Page 168 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SERVICING AIR CONDITIONING SYSTEM. The air conditioning system should be serviced by a qualified shop with trained personnel. The following procedures and precautions should be observed.
  • Page 169 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 6. Never reuse oil removed from the system. Discard it. 7. When Loctite Refrigerant Sealant has been used on a joint it must be heated to 400°F prior to disassembly.
  • Page 170 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMPOUND HIGH PRESSURE PRESSURE GAUGE GAUGE TO DISCHARGE SERVICE VALVE TO SUCTION SERVICE VALVE TO VACUUM PUMP OR REFRIGERANT CYLINDER Figure 21-25. Test Gauge and Manifold Set TEST GAUGE AND MANIFOLD SET.
  • Page 171 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1257 HIGH CLOSED CLOSED HIGH DIAGRAM A CRACKED CLOSED HIGH DIAGRAM B HIGH CLOSED CRACKED DIAGRAM C CRACKED CRACKED DIAGRAM D Figure 21-26. Manifold Set Operation...
  • Page 172 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PRESSURE GAUGE COMPOUND SCHRADER VALVE GAUGE 50 P.S.I. SCHRADER VALVE CLOSED HIGH OPEN MANIFOLD GAUGE SET REFRIGERANT OPEN TO 50 P.S.I. CONTAINER...
  • Page 173 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Method 2: A. Remove the access panel at the rear of the cabin to gain access to the service valves. B. Remove the protective cap on the high pressure Schrader valve fitting and connect a charging hose with a shut-off valve arrangement to the fitting.
  • Page 174 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COMPOUND GAUGE PULL 26 TO 28 INCHES VACUUM VACUUM PUMP PRESSURE GAUGE SCHRADER VALVE SCHRADER VALVE OPEN HIGH HIGH OPEN MANIFOLD GAUGE...
  • Page 175 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 5. Start the vacuum pump and open the low side manifold hand valve. Observe the compound, low pressure gauge needle, it should show a slight vacuum.
  • Page 176 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. CYLINDER PRESSURE GAUGE 2. COMPOUND GAUGE 3. VALVE, LOW PRESSURE CONTROL 4. VALVE, VACUUM CONTROL 5. CHARGING CYLINDER 6. BRACKET 7. SIGHT GLASS 8.
  • Page 177 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISCHARGE LINE CONDENSER RECEIVER SUCTION LINE EXPANSION DEHYDRATOR VALVE SIGHT GLASS SCHRADER VALVE FITTING CAPILLARY COIL EVAPORATOR COMPRESSOR PRESSURE SWITCH THIS END OF HOSE...
  • Page 178 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 10. Shut off air conditioning system and airplane engine. Then, remove the charging lines from the Schrader valves with care due to the refrigerant remaining in the hose.
  • Page 179 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SYSTEM COMPONENTS. COMPRESSOR SERVICE. It is not advisable to service the compressor in the field. It should be done by a qualified shop which has the special equipment and trained personnel required to properly service the unit.
  • Page 180 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A654 ALUMINUM PLANETPLATE (TOP VIEW) THRUST BEARING OIL FILLER HOLE CAST-IRON CAM ROTOR CASTING MARK SHOWING ROTOR AT TOP DEAD CENTER Figure 21-31. Top Dead Center Casting Mark (Sankyo Compressor)
  • Page 181 7. Remove the dipstick and count the number of increments of oil. The acceptable oil level in increments is 7 to 10. This represents between 2.6 and 4.4 fluid ounces. 8. When oil is added Piper refrigerant oil PMS-L2000 or equivalent 500 viscosity refrigerant oil must be used.
  • Page 182 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF DRIVE BELT TENSION. 1. Rotate the compressor to obtain tension of 45 to 50 Ibs. for new or old belts.
  • Page 183 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3016 SEAL BLOWER MOTOR CONDENSER SCOOP B961 CONDENSER SEAL DUCT B - B SKIN DUCT CONDENSER DUCT SEAL SEAL A - A Figure 21-33.
  • Page 184 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF CONDENSER. 1. Remove the baggage compartment close-out panel. 2. Completely discharge the system and disconnect the suction and discharge lines at the condenser.
  • Page 185 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C360 TO EVAPORATOR VALVE ASSEMBLY CAPILLARY COIL FROM RECEIVER DEHYDRATOR Figure 21-34. Expansion Valve INSTALLATION OF EXPANSION VALVE. 1. Install the expansion valve in the inlet line of the evaporator core by coupling the related fittings. (Seal all couplings with sealant applied to tube flanges only.) Torque fittings per Chart 2106.
  • Page 186 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF EVAPORATOR ASSEMBLY. 1. Remove air conditioning filter cover, filter and rear access panels. — Note — Discharge the system before disassembling.
  • Page 187 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2107. EVAPORATOR BLOWER MOTOR WIRE CODES MOTOR WIRES AIRCRAFT WIRES PIN YY15062 ESB. - AIRCRAFT PIN NOS. UNIVERSAL ELECTRIC CO. HARNESS NOS.
  • Page 188 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PRESSURE RELIEF SWITCH. The pressure relief switch automatically prevents the system from over pressurization by breaking the electrical circuit to the magnetic clutch, stopping the compressor until pressure is reduced. The switch is located in the line between the receiver and expansion valve and is actuated between 250 and 300 psi.
  • Page 189 C H A P T E R A U TO F L I G H T 1H21...
  • Page 190 22-00-00 GENERAL 1H23 8-81 22-10-00 NON-PIPER A.F.C.S. EQUIPMENT CONTACTS 1H23 — WARNING — IT IS VERY IMPORTANT TO NEVER USE A SUBSTITUTE TRIM SYSTEM COMPONENT PA R T, FOR AN ORIGINAL DESIGN PA R T, BECAUSE THE FAIL-SAFE CHARACTERISTICS OF THE SYSTEM MIGHT BE COMPROMISED.
  • Page 191 This includes mechanical service such as; adjusting bridle cable tension, servo removal and installation, servo clutch adjustments, etc. NON-PIPER A.F.C.S. EQUIPMENT CONTACTS. Refer to the following list of Autopilot/Flight Director manufacturers to obtain service directions, parts support and service literature.
  • Page 192 C H A P T E R C O M M U N I C AT I O N S 1H24...
  • Page 193 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 23 - COMMUNICATIONS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 23-00-00 GENERAL 9R 6-95 23-10-00 EMERGENCY LOCATOR TRANSMITTER (ELT)
  • Page 194 The CIR - 11 - 2 ELT’s, originally installed in the PA-44-180, used a lithium sulfur dioxide battery. Refer to Piper Service Letter 820 for instructions on converting CIR - 11 - 2 ELT to alkaline battery per AD 79-18-05.
  • Page 195 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL 10. Insert transmitter into airplane and fit into place. Replace mounting bracket by pushing the black plas- tic knob into place. 11. Connect the pilot's remote switch harness and the antenna coax cable to the transmitter.
  • Page 196 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL PORTABLE NOTCH STOP ANTENNA OPERATIVE ANTENNA BLADE BUT STORED ANTENNA TOUCHES EXTENSION PORTABLE FINGER CONTACT VIEW ANTENNA ON-OFF-ARM EXTENSION SWITCH ANTENNA TO “ON” LATCH POPS OUT CHANNEL AND DOWN VIEW STOP PULL TAB VIEW T O E XT EN D F U LL LE N GT H Figure 23-3.
  • Page 197 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL 4. Remove ELT from its mounting bracket by releasing the latch on the strap and sliding the ELT off the bracket. 5. Extend the portable antenna. (Refer to Figure 23-2.) 6. Unscrew the four screws that hold the control head to the battery casing and slide apart.
  • Page 198 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL 3. Disconnect antenna coaxial cable from ELT. 4. Disconnect wiring harness connector from ELT. 5. Remove ELT from its mounting tray. 6. Remove 8 flat head screws from unit. (Refer to Figure 23-6.) 7. Carefully separate unit into two sections.
  • Page 199 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL #6-32 FLAT HEAD SCREWS (8 PLACES) BATTERY CONNECTOR BATTERY PACK WITH FOAM JACKET Figure 23-6. ELT 910 Battery Pack ((S/N's 4495008 and up) C. Turn receiver volume up until a slight background noise is heard. If equipped, automatic squelch must be overridden.
  • Page 200 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL MOLE X C ON NEC TOR SI D E VI EW MO UNT IN G BAT T E RY OF F HO L ES CO V ER S CR E WS FR O N T...
  • Page 201 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL 8. Replace the four screws. Dress wires away from standoffs to avoid pinching wires between standoffs and the battery pack. 9. Install unit into mounting tray: Connect molex and coax cables to ELT unit.

  • Page 202: Electrical Power

    C H A P T E R ELECTRICAL POWER 1I10...
  • Page 203 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 24 - ELECTRICAL POWER TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 24-00-00 GENERAL 1I13 24-01-00 Description and Operation 1I13...
  • Page 204 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 24 - ELECTRICAL POWER TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 24-33-09 Checking Overvoltage Relay (S/N 44-7 995001 thru 44-8195026 and all PA-4-180T’s)
  • Page 205 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This chapter deals with the complete electrical system and provides service procedures and a trouble-shooting guide to be used to remedy problems which may arise.
  • Page 206 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2401. TROUBLESHOOTING (ALTERNATOR) Trouble Cause Remedy ALTERNATOR Zero output indicated on Open field circuit. With master switch turned ammeter regardless of RPM...
  • Page 207 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2401. TROUBLESHOOTING (ALTERNATOR) Trouble Cause Remedy ALTERNATOR (cont) Zero output indicated on Open field winding in alternator Disconnect field terminal of...
  • Page 208 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2401. TROUBLESHOOTING (ALTERNATOR) Trouble Cause Remedy ALTERNATOR (cont) Output indicated on ammeter High resistance connections Check visually for loose does not meet minimum in field or output circuit.
  • Page 209 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2401. TROUBLESHOOTING (ALTERNATOR) Trouble Cause Remedy ALTERNATOR (cont) Field circuit breaker trips. Short circuit in field winding Disconnect field wiring at (cont) of alternator.
  • Page 210 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2401. TROUBLESHOOTING (ALTERNATOR) Trouble Cause Remedy ALTERNATOR (cont) Output circuit defective. (cont) Battery charged backwards. Remove battery. Connect load such as landing light lamp or similar load and discharge battery.
  • Page 211 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2402. TROUBLESHOOTING (BATTERY) Trouble Cause Remedy BATTERY Discharged battery. Battery worn out. Replace battery. Low electrical system voltage. Check voltage regulator voltage.
  • Page 212 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2402. TROUBLESHOOTING (BATTERY) Trouble Cause Remedy BATTERY(cont.) Excessive corrosion inside Spillage from overfilling. Use care in adding water. container. Vent lines leaking or clogged.
  • Page 213 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL D.C. GENERATION. ALTERNATOR SYSTEM. The alternator is located on the front lower right side of the engine and utilizes a belt drive from the engine crankshaft.
  • Page 214 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2612 ALLIGATOR CLIPS 8 AMP LANDING LIGHTS AS REQUIRED Figure 24-1. Lamp bank load. 3. Do not attempt to polarize the alternator. No polarization is required. Any attempt to do so may result in damage to the alternator, regulator or circuits.
  • Page 215 (See schematics for your airplane) If, during inspection, a fault in the aluminum cable is found, Piper considers it mandatory that the complete cable assembly be replaced with copper wire and suitable terminals.
  • Page 216 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2278 1. BATTERY BOX COVER 2. BATTERY BOX ASSEMBLY 3. POWER RELAY 4. STARTER SOLENOID 5. STARTER SOLENOID 6. VENT TUBES 7. MASTER RELAY DIODE Figure 24-2.
  • Page 217 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SERVICE PROCEDURES. Since the alternator and regulator are designed for use on only one polarity system, the following procedures must be observed when working on the charging circuit. Failure to observe these service procedures will result in serious damage to the electrical equipment.
  • Page 218 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF BATTERY. 1. Ascertain that both the battery and battery box are clean and free from any acid. 2. Position the battery in the box with the positive terminal closest to the positive cable.
  • Page 219 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BATTERY BOX CORROSION PREVENTION. Check the battery for spilled electrolyte or corrosion at least every 30 days, but not later than each 50 hour inspection, whichever comes first.
  • Page 220 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL F.S. 3500 VOLTAGE REGULATOR ASSEMBLY FORWARD VOLTAGE OVERVOLT- REGULATORS AGE RELAYS NOSE DECK Figure 24-3. Electrical Component Location (Lamar Model No. B-00288-1) (S/N 44-7995001 thru 44-8195026 and all PA-44-180T’s)
  • Page 221 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Zener Diode: The zener diode (Symbol “Z”) in addition to passing current in the forward direction, will also pass current in the reverse direction when a particular value of reverse voltage is applied.
  • Page 222 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 5 . A ground wire between the regulator GND terminal and the aircraft or test stand structure is essential for proper operation. The alternator frame must also be solidly bonded to the system ground.
  • Page 223 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4 . With the connections made as shown in Figure 24-5, start the engine and adjust its speed to a p p r o x imately 920 to 1,250 RPM to obtain 3,000 to 4,000 alternator rpm. Turn on accessories as needed to establish a load of 10 to 15 amperes.
  • Page 224 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Lift the wire from the PAR terminal of either regulator and insulate the free end so it will not contact other circuits or ground during the adjustment procedure. Breaking this circuit will disable the balancing circuits in both regulators.
  • Page 225 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 10. In whichever regulator of a pair is set to deliver the highest voltage, the balancing circuits are inactive. Thus system voltage is determined by the regulator of a pair which is set to higher voltage. The lower set regulator will adjust itself automatically, as described above, to deliver the same field voltage as the one which is set higher, within the limits of its design capability.
  • Page 226 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LAMAR MODEL NO. B-00392-1 VOLTAGE REGULATOR OPERATION 1. The Lamar no. B00392-1 voltage regulator delivers a pulse width modulated field control output, as required, to maintain the alternator output voltage. 2. An overvoltage protection is incorporated, which latches off regulator output following an overvoltage event.
  • Page 227 1. Turn aircraft MASTER SWITCH and all electrical equipment OFF. 2. Connect the RED lead of PEP (Piper External Power) kit jumper cable to the POSITIVE (+) terminal of external 12 volt battery and the BLACK lead goes to the NEGATIVE (-) terminal.
  • Page 228 C H A P T E R E Q U I P M E N T / F U R N I S H I N G S 1J12...
  • Page 229 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 25 -EQUIPMENT/FURNISHINGS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 25-10-00 GENERAL 1J14 25-10-00 FLIGHT COMPARTMENT 1J14 A 6 - 95...
  • Page 230 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The Seminole has the capacity of seating up to 4 passengers in a forward facing seat arrangement. Information on seat installations and other options are included in this chapter.
  • Page 231 INSTALLATION OF LUMBAR BLADDER NOTE An installation kit is required for airplanes not previously equipped with a lumbar support Refer to Piper's Illustrated Parts Catalog for kit part number. 1. If necessary to assemble pad and bladder: Apply a layer of 3M 847 cement to smooth side of bladder pad.
  • Page 232 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 25-2 Lumbar Seat Bladder Installation 25-10-00 Page 25-3 Added: June 20, 1995 1J16...
  • Page 233 C H A P T E R FIRE PROTECTION 1J17...
  • Page 234 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHAPTER 26 -FIRE PROTECTION TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 26-00-00 GENERAL 1J19 PR 6 - 95 26-20-00 Extinguishing 1J19 26 - Cont./Effec. Page - 1 Revised: June 20, 1995 1J18...
  • Page 235 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This chapter contains information pertaining to basic information data, maintaining and servicing of the portable fire extinguisher unit installed on the PA-44-180, s/n’s 44-7995001 thru 44-8195026, and the PA-44- 180T, s/n’s 44-8107001 thru 44-8297020.
  • Page 236 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — CAUTION — NO FIELD RECHARGE OR SERVICING FACILITIES, MANUFA C T U R E R WILL RECHARGE OR SERVICE AND RETURN FOR A SERV I C E CHARGE.
  • Page 237 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1J21THRU 1J23 INTENTIONALLY LEFT BLANK 1J21...
  • Page 238 C H A P T E R FLIGHT CONTROLS 1J24...
  • Page 239 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 27 - FLIGHT CONTROLS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 27-00-00 GENERAL 27-00-00 Description and Operation 27-00-00 Standard Procedures...
  • Page 240 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 27 - FLIGHT CONTROLS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 27-20-04 Installation of Forward Rudder Trim Controls 9R 6-95...
  • Page 241 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. DESCRIPTION AND OPERATION. The airplane is controlled in flight by the use of three primary control surfaces, consisting of ailerons, s t abilator and rudder. Operation of these controls is through the movement of the control column-tee bar assembly and rudder pedals.
  • Page 242 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHART 2701. CABLE TENSION VS. AMBIENT TEMPERATURRE -10 -8 SUBTRACT RIGGING LOAD CORRECTION, POUNDS Figure 27-1. Rod End Installation Method 27-00-00 Page 27-2 Revised: June 20, 1995...
  • Page 243 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CONTROL CABLE INSPECTION Aircraft control cable systems are subject to a variety of environmental conditions and forms of deteriora- tion that, with time, may be easy to recognize as wire/strand breakage or the not-so-readily visible types of wear, corrosion, and/or distortion.
  • Page 244 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL the relative motion between inner wire surfaces. Under certain conditions the rate of this type wear can be greater than that occurring on the surface.
  • Page 245 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CORROSION Carefully examine any cable for corrosion that has a broken wire in a section not in contact with wear pro- ducing airframe components such as pulleys, fairleads, etc. It may be necessary to remove and bend the cable to properly inspect it for internal strand corrosion as this condition is usually not evident on the outer surface of the cable.
  • Page 246 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-5. Pulley Wear Patterns TROUBLESHOOTING. Chart 2702 list troubles peculiar to the flight controls along with their probable causes and suggested remedies.
  • Page 247 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2702. TROUBLESHOOTING CONTROL SURFACES (cont.) AILERON CONTROL SYSTEM Trouble Cause Remedy Resistance to control wheel Control column horizontal chain Adjust chain tension.
  • Page 248 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2702. TROUBLESHOOTING CONTROL SURFACES (cont.) RUDDER CONTROL SYSTEM Trouble Cause Remedy Lost motion between rudder Broken pulley. Replace pulley. p e dals and rudder. (cont.) Bolts attaching rudder to bell- Tighten bellcrank bolts.
  • Page 249 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2702. TROUBLESHOOTING CONTROL SURFACES (cont.) S TA B I L ATOR CON T R O L S Y S T E M...
  • Page 250 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2702. TROUBLESHOOTING CONTROL SURFACES (cont.) S TA B I L ATOR TRIM CONTROL SYSTEM Trouble Cause Remedy Trim control wheel moves with System not lubricated properly.
  • Page 251 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. SPROCKET, RIGHT CONTROL WHEEL 2. FLEXIBLE JOINT 3. BOLT ASSY. 4. TUBE, CONTROL WHEEL 5. CONTROL WHEEL (L&R) 6. TURNBUCKLE 7. TEE BAR ASSY.
  • Page 252 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. To remove tee bar with assembled parts: A. Remove the access panel to the aft section of the fuselage. B. Relieve cable tension from the stabilator control cables at one of the stabilator cable turnbuckles in the aft section of the fuselage.
  • Page 253 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL J.Tighten the connecting bolts of the idler sprockets. K.Install the floor tunnel plate and secure with screws. Fasten the tunnel carpet in place. 2. To install either control wheel assembly: A. Insert the control wheel tube through the instrument panel.
  • Page 254 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AILERON CONTROLS. AILERON CONTROL CABLES. REMOVAL OF AILERON CONTROL CABLES. (Refer to Figure 27-8.) 1. To remove any of the control cables in the fuselage or ether wing: A.
  • Page 255 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. TURNBUCKLE, CONTROL CHAINS 15. CABLE, LEFT FUSELAGE PRIMARY 2. SPROCKET, CONTROL WHEEL 16. TURNBUCKLE, LEFT PRIMARY 3. SPROCKET, IDLER 17. CABLE, LEFT WING PRIMARY 4.
  • Page 256 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL D. Disconnect the cable from the aft end of the aileron bellcrank by removing the cotter pin, nut, washer and bolt. E. Draw the cable from the wing.
  • Page 257 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Remove the screws securing the floor panel located directly aft of the main spar. Lift the panel and remove from the airplane.
  • Page 258 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-10. Aileron Rigging 27-10-05 Page 27-18 Revised: June 20, 1995 1K20...
  • Page 259 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RIGGING AND ADJUSTMENT OF AILERON CONTROLS. (Refer to Figure 27-10.) 1. To check and adjust the rigging of the aileron controls: A. Insure that the flaps are adjusted and rigged properly, and in their up locked position.
  • Page 260 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RUDDER CONTROLS. RUDDER CONTROL CABLES. REMOVAL OF RUDDER CONTROL CABLES. (REFER TO FIGURE 27-11.) 1. To remove either the forward or aft rudder cables: A.
  • Page 261 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RUDDER & STEERING PEDAL ASSEMBLY BOLT, WASHER, NUT & COTTER PIN BOLT, BUSHINGS, WASHER & NUT GUARD PIN, CABLE PULLEY CLUSTER RUB BLOCKS PULLEY CLUSTER 42 BOLT, BUSHINGS, WASHER &...
  • Page 262 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Install the lower and upper selector covers and secure with screws. K. Place the fuel selector knobs in place and secure with set screws.
  • Page 263 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RUDDER PEDAL NEUTRAL POSITION AFT OF VERTICAL 19° + 1°, - 0° Figure 27-12. Clamping Rudder Pedals Figure 27-13. Rudder Rigging Tool...
  • Page 264 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HINGE SECTOR RUDDER STOPS STOP BOLTS LOWER HINGE BRACKET ON FUSELAGE Figure 27-15. Ruder Travel Adjustments B. If the aft trim cable is not being removed, block the cables aft of the turnbuckles to prevent the cables from unwrapping at the trim barrel in the fin.
  • Page 265 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF FORWARD RUDDER TRIM CONTROLS. (Refer to Figure 27-16.) 1. To install the trim control wheel with drum: A . Wrap the left cable on the trim drum by inserting the swaged ball of the cable in the slot provided in the upper side of the drum which mates with the control wheel.
  • Page 266 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. TRIM SCREW 2. PUSH ROD 3. PULLEY CLUSTER 4. TURNGBUCKLES 5. PULLEY CLUSTER 6. PULLEY CLUSTER 7. RUDDER TRIM CONTROL Figure 27-16. Rudder Trim Controls...
  • Page 267 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Disconnect the trim cable turnbuckles in the aft section of the fuselage. 4. Remove the cable guards from the pulley bracket located at station 273.38.
  • Page 268 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 8. Check all travels with specifications given in Figure 27-14. 9. Determine the free play of the rudder tab with the rudder securely held against either stop. Total free travel measured at the tab trailing edge must not exceed 0.15 inch.
  • Page 269 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-17. Rudder Pedal Assembly 27-20-05 Page 27-29 Revised: June 20, 1995...
  • Page 270 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. Align the bolt holes in the center area of the torque tube assembly, install bolts, washers and nuts and tighten. 5. Position the torque tube support bracket on the floor tunnel and secure with bolts.
  • Page 271 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOTE ALIGN CABLE PLATES WITH HORIZONTAL PLANE TO WITHIN ± 10° SEE NOTE 1. TEE BAR, CONTROL COLUMN 12. PULLEY, FORWARD 2. CABLE, RIGHT FORWARD 13.
  • Page 272 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Remove the lower selector cover. G. Remove the tunnel plate just aft of the tee bar by removing enough carpet from the tunnel to allow the plate attachment screws and plate to be removed.
  • Page 273 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CABLE TENSION (SEE NOTE) STABILATOR X40 LBS. ± 5 LBS. STABILATOR TRIM TAB 14 LBS. ± 1 LB. NOTE CABLE TENSION APPLIES ONLY TO AIRPLANES WITHOUT AUTOPILOT BRIDLE CABLES ATTACHED.
  • Page 274 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RIGGING AND ADJUSTMENT OF STABILATOR CONTROLS PPS50033 1. To check and set the correct degree of stabilator travel, the following procedure may be used: A.
  • Page 275 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-20. Stabilator Travel Adjustments Figure 27-21. Methods of Securing Trim Cables 27-30-02 Page 27-35 Revised: June 20, 1995 1L13...
  • Page 276 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STABILATOR TRIM. REMOVAL OF FORWARD STABILATOR TRIM ASSEMBLY. (Refer to Figure 27-22.) 1. To remove the trim control wheel assembly and/ or the trim control cables, remove the panel to the aft section of the airplane.
  • Page 277 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. TRIM SCREW 2. TRIM SCREW ASSEMBLY 3. PUSH ROD ASSEMBLY 4. PULLEY CLUSTER STA. 5. TURNBUCKLES 6. PULLEY CLUSTER STA. 7. PULLEY CLUSTER STA.
  • Page 278 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF FORWARD STABILATOR TRIM ASSEMBLY. (Refer to Figure 27-22.) 1. The trim control wheel with drum may be installed by the following procedure: A.
  • Page 279 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF AFT STABILATOR TRIM CONTROLS. (Refer to Figure 27-22.) 1. Remove the access panel to the aft section of the fuselage.
  • Page 280 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-23. Wrapping Trim Barrels Figure 27-24. Stabilator Trim Screw Adjustment 27-30-04 Page 27-40 Revised: June 20, 1995 1L18...
  • Page 281 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 7 . Move the stabilator and trim tab to all extremes of travel and check to insure that there is no interference between the turnbuckles and pulleys.
  • Page 282 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL H. Remove the cotter pin cable guard from the flap cable pulley located inside the floor tunnel just ahead of the spar housing.
  • Page 283 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF WING FLAP CONTROLS. (Refer to Figure 27-25.) 1. The nap torque tube assembly may be installed by the following procedure: A.
  • Page 284 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 27-26. Flap Step Adjustment 4. Check cable tension and adjust if required to remove all slack. Do not tighten cable to the point that the stop screw comes off the stop.
  • Page 285 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 9 . While maintaining a light up pressure on the underside of the flap, check flap down travel m e a s u r i n g from the neutral position obtained from Steps 6, 7 and 8.
  • Page 286 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF LIFT DETECTOR. The lift detector switch is adjusted at the factory when the airplane is test flown. and should not require any further adjustment during the normal service life of the airplane.
  • Page 287 SEMINOLE MAINTENANCE MANUAL CARD 2 OF 4 PA-44-180 SEMINOLE PA-44-180T TURBO SEMINOLE PIPER AIRCRAFT CORPORATION (PART NUMBER 761 664) June 20.1995...
  • Page 288 AIRPLANE MAINTENANCE MANUAL INTRODUCTION. This PIPER AIRCRAFT Maintenance Manual is prepared in accordance with the GAMA (General Aviation Manufacturers Association) format. This maintenance manual is divided into various Groups which enable a broad separation of contents (Chapters) within each group.
  • Page 289 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL VENDOR PUBLICATIONS. ENGINE: Overhaul Manual = TEXTRON LYCOMING - OVERHAUL MANUAL DIRECT DRIVE ENGINE - P/N 60294-7 Textron Lycoming Division Williamsport, Pa 17701 Parts Catalog = TEXTRON LYCOMING — O-360 AND LO-360 E SERIES - P/N PC-123 TEXTRON LYCOMING —...
  • Page 290 Engineered Fabrics Division Rockmart, Georgia 30153-0548 Rockmart, Georgia 30153 PIPER PUBLICATIONS. AUTOFLIGHT: AutoControl IIIB Service Manual = Piper P/N 761 502 AutoControl IIIC Service Manual = Piper P/N 761 602 PA-44-180/180T Parts Catalog = Piper P/N 761 663 Inspection Reports =...
  • Page 291 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS The Maintenance Manual information incorporated in this set of Aerofiche cards has been arranged in accordance with the general specifications of Aerofiche adopted by the General Aircraft Manufacturer's Association, (GAMA). The information compiled in this Aerofiche Maintenance Manual will be kept current by revisions distributed periodically.
  • Page 292 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS (cont) Effectivity Publication Date Aerofiche Card Effectivity ORG791212 December 12, 1979 1, 2, and 3 PR800822 August 22, 1980 1, 2, and 3 PR810223 February 23, 1981 1, 2, and 3...
  • Page 293 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID NO. AIRWORTHINESS 1A18 TIME LIMITS/MAINT CHECKS 1A21 DIMENSIONS AND AREAS 1B14 LIFTING AND SHORING LEVELING AND WEIGHING TOWING AND TAXIING 1C10 PARKING AND MOORING...
  • Page 294 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE (cont) SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID N0. LIGHTS NAVIGATION & PITOT/STATIC 2I16 OXYGEN VACUUM ELECTRICAL/ELECTRONIC PANELS AND MULTI-PURPOSE PARTS 2K19 STRUCTURES DOORS 3A18 STABILIZERS WINDOWS 3B22 WINGS 3C10...
  • Page 295 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS FIGURE NO. SUBJECT GRID NO. 6-1. Three View 1B19 6-2. Station References 1B20 6-3. Access Plates and Panels 1B22 7-1. Jacking 8-1. Leveling Airplane 8-2. Weighing 11-1. Placards and Decals (Sheet 1 of 2 1C19 11-1.
  • Page 296 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 21-19. Exploded View - Combustion Air Blower and Motor Assembly 21-20. Suggested Setup of Heater Operation Test 1G10 21-21. Wiring Connections for Heater Operation Test 1G10 21-22.
  • Page 297 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 27-2. Control Cable Inspection Technique 27-3. Cable Wear Pattern 27-4. Internal Cable Wear 27-5. Pulley Wear Patterns 27-6. Control Column Assembly 1K13 27-7. Flex (Universal) Joint Assembly 1K15 27-8.
  • Page 298 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 29-8. End Gland Locking Device (Main Gear) 2C20 29-9. Hydraulic Lines Installation 2C23 30-1. Pneumatic Deice System Installation 30-2. Deice Control Panel Installation 2D16 30-3.
  • Page 299 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 32-23. Adjustment of Main Gear Down Limit Switch 2H23 32-24. Adjustment of Nose Gear Down Limit Switch 2H23 32-25. Throttle Warning Switches (Without Mute Switch) (Sheet 1 of 2) 32-25.
  • Page 300 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 61-2. Propeller Installation 61-3. Propeller Governor 61-4. Adjustment of Propeller Control 61-5. Synchrophaser System Installation 61-6. Pulse Generator Assembly 3D11 61-7. Backup Test of Pulse Generator 3D14 61-8.
  • Page 301 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 74-19. Lifting Inner End of Spring 3G11 74-20. Checking Harness Leads Continuity 3G13 74-21. Checking Harness Leads Insulation Resistance 3G13 74-22. Modified Pliers 3G13 74-23.
  • Page 302 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS CHART NO. SUBJECT GRID NO. Leading Particulars and Principal Dimensions 1B16 1201 Thread Lubricants 2001 Maximum Distance Between Supports for Fluid Tubing 2101 Troubleshooting (Janitrol Heater) 1E17 2102 Blower System Wire Color Codes...
  • Page 303 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS (cont) CHART NO. SUBJECT GRID NO. 7101 Troubleshooting (Engine) 3D24 7301 Fuel Pressure Sender Test Specifications 3F12 7302 Troubleshooting (Fuel Pressure Gauge) 3F13 7401 Troubleshooting (Magneto) 3F18 7402 Coupling Torques 3G18...
  • Page 304 C H A P T E R F U E L 2A18...
  • Page 305 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 28 - FUEL TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 28-00-00 GENERAL 2A20 8-81 28-01-00 Description 2A20 28-02-00 Troubleshooting...
  • Page 306 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 28 - FUEL (cont) TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 28-23-00 Cleaning Fuel System 2B13 28-24-00 Electric Fuel Pump...
  • Page 307 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The fuel system components covered in this section consist of fuel cells. fuel selector valves, gascolator and electric fuel pumps. Each wing contains a fuel cell, having a capacity of 55 U.S. gallons, for a total capacity of 110 U.S.
  • Page 308 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B945 NOTE FUEL SYSTEM INSTALLATION AS DEPICTED APPLIES TO PA-44-180 SERIAL NUMBERS 44-7995001 TO 44- 8095037. FOR PA-44-180T (ALL) AND PA-44-180 S/N 44-8195001...
  • Page 309 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2801. TROUBLESHOOTING (FUEL SYSTEM) Trouble Cause Remedy Failure of fuel to flow. Fuel line blocked. Flush fuel system. Fuel vent cap blocked.
  • Page 310 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2801. TROUBLESHOOTING (FUEL SYSTEM) Trouble Cause Remedy Low pressure or pressure Obstruction in inlet side Trace lines and locate surges. of pump.
  • Page 311 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STORAGE. FUEL CELLS. REMOVAL OF FUEL CELLS. (Refer to Figure 28-2.) 1. Turn the fuel selector to the off position and drain the fuel cell.
  • Page 312 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 28-2. Fuel Cell Installation 28 -11-03 Page 28-06 Revised: June 20, 1995...
  • Page 313 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Used Cells: Prior to removal, the cells are to be drained of fuel, purged with fresh air and swabbed out to remove all traces of fuel. Following removal, the cells are to be cleaned inside and out with soap and warm water.
  • Page 314 — WARNING — WHEN SERVICING OR INSPECTING VENDOR EQUIPMENT INSTA L L E D IN PIPER AIRCRAFT, IT IS THE USER’S RESPONSIBILITY TO REFER TO THE APPLICABLE VENDOR PUBLICATION. Procedures for the maintenance, repair and “quick cure” repair of fuel cells constructed of LORAL or GOODYEAR VITHANE®...
  • Page 315 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 2B5 THROUGH 2B7 INTENTIONALLY LEFT BLANK 2 8 - 11 - 11 Page 28-09 Revised: May 15, 1989...
  • Page 316 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TESTING FUEL CELLS. Either of the following test procedures may be used to detect leaks in the bladder cells: 1. Soap Suds Test.
  • Page 317 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LOCKING FUEL CAP. DISASSEMBLY OF LOCKING FUEL CAP. 1. Remove two screws on back of fuel cap. 2. Remove screw which secures pawl to back of key lock assembly.
  • Page 318 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISTRIBUTION. GASCOLATOR. (refer to Figure 28-4.) — Note — The gascolator should be inspected at periodic intervals as explained in Chapter 12, Servicing Fuel System.
  • Page 319 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TORQUE 60 TO 80 INCH-POUNDS 1. BODY, FILTER 10. SEAT, RELIEF 2. O-RING SEAL 11. DISCS, FILTER 3. TUBE, OUTER 12. WASHERS 4.
  • Page 320 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1113 3 8 6 13 18 15 14 5 1. PACKING, PREFORMED 2. BODY, VALVE 3. ROLL PIN 4. SHAFT 5. LEVER, SELECTOR 6.
  • Page 321 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Repair to the valve is limited to reconditioning of parts, such as smoothing out minor nicks and scratches. and the replacing of O-ring packings and seal.
  • Page 322 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRIC FUEL PUMP. REMOVAL AND INSTALLATION OF ELECTRIC FUEL PUMP. There is one electric fuel pump for each engine. The pump is mounted in the inboard side of wing. To remove pump.
  • Page 323 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. With the master switch in the “OFF” position, 14 ± .2 volts D.C. applied to system, fuel selector valves in the “ON” position, and no fuel in the tanks, the gauge needle should be centered on the white dot to the left of the “O”...
  • Page 324 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL FUEL PRESSURE GAUGE CHECK . 1. With electrical power off, the fuel pressure gauge shall indicate the dot ± 1/2 needle width.
  • Page 325 C H A P T E R HYDRAULIC POWER 2B17...
  • Page 326 Pump-Adapter Assembly 2C16 A6-20 29-11-27 Installation of Motor Assembly To Oildyne Pump-Adapter Assembly 2C16 A6-20 29-11-28 Installation of Piper Bracket to Oildyne Hydraulic Pump Assembly 2C16 A6-20 29-11-29 Installation of Oildyne Hydraulic Pump 2C16 A6-20 29-11-40 Landing Gear Free-Fall Valve Assembly...
  • Page 327 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 29 -HYDRAULIC SYSTEM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 29-12-02 Disassembly of Nose Gear Actuating Cylinder 2C18 9R6-20...
  • Page 328 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL The PA-44-180/180T may be equipped with either a Prestolite (S/N’s 44-7995002 thru 44-8195026 and all PA-28 -180T’s) or Oildyne hydraulic pump (S/N’s 4495001 and up) Prestolite pumps may be replaced with Oildyne pumps.
  • Page 329 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LEFT MAIN GEAR RIGHT MAIN GEAR HYDRAULIC CYLINDER HYDRAULIC CYLINDER RESTRICTOR DOWN DOWN NOSE GEAR HYDRAULIC N.C. CYLINDER PRESSURE SWITCH PRESSURE SWITCH OFF AT 1800 ±...
  • Page 330 3000 ± 200-300 psi PRESSURE SHUTTLE VALVE CONTROL DELIVERED PRESSURE 600± 200 psi 400 TO 800 psi PIPER MOUNTING BASE OPEN (OFF) PRESSURE 1800± 100 psi ORIFICE CLOSE (ON) PRESSURE 300± 100 psi BELOW OPENING PRESSURE PRESSURE SWITCH GEAR DOWN...
  • Page 331 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL — CAUTION — PRIOR TO STARTING ANY INVESTIGATIONS OF THE HYDRAULIC SYSTEM, PLACE THE AIRPLANE ON JACKS. WITH THE AIRPLANE ON JACKS, PULL THE EMERGENCY EXTENSION KNOB OUT THUS PREVENTING THE BUILDUP OF UNNECESSARY PRESSURE ON THE ACTUATING CYLINDERS AND CONNECTING HYDRAULIC LINES WHEN THE GEAR IS RAISED OR LOWERED MANUALLY.
  • Page 332 G E A R S A R E D O W N A N D L O C K E D . T U R N T H E M A STER SWITCH OFF. CHART 2901. LEADING PARTICULARS, HYDRAULIC SYSTEM HYDRAULIC PUMP HYC5005 Piper P/N 481 879 PRESTOLITE OILDYNE Hydraulic Pump High Pressure 2000 to 2500 psi 2400 ±...
  • Page 333 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2902. TROUBLESHOOTING HYDRAULIC SYSTEM Trouble Cause Remedy Landing gear retraction system Landing gear actuator circuit Reset circuit breaker and determine fails to operate.
  • Page 334 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2902. TROUBLESHOOTING HYDRAULIC SYSTEM (cont.) Trouble Cause Remedy Landing gear extension system Landing gear actuator circuit R e s e t c i r c u i t b r e a k e r and fails to operate.
  • Page 335 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 2902. TROUBLESHOOTING HYDRAULIC SYSTEM (cont.) Trouble Cause Remedy Landing gear retraction extremely Hydraulic fluid in reservoir Fill reservoir with hydraulic slow.
  • Page 336 P restolite pumps only. Return Oildyne pumps to Piper A i r c r a f t v i a l o c a l P i p e r d i s t r i b utor for overhaul.
  • Page 337 P restolite pumps only. Return Oildyne pumps to Piper A i r c r a f t v i a l o c a l P i p e r d i s t r i b utor for overhaul.
  • Page 338 With gear unsafe light on, pump Shorted gear down solenoid. Replace solenoid. motor circuit breaker opens. CHART 2903. HYDRAULIC PUMP MOTOR CHARACTERISTICS ELECTRICAL CHARACTERISTICS P R E S TOLITE - HYC5005 OILDYNE - PIPER P/N 481 879 Voltage 14 VDC 14 VDC Rotation Reversible Reversible...
  • Page 339 — NOTE— It is the users responsibility to refer to the applicable vendor publication when servicing or inspecting vendor equipment installed in Piper airplanes. PRESTOLITE HYDRAULIC PUMPS. REMOVAL OF PRESTOLITE HYDRAULIC PUMPS. The hydraulic pump with reservoir incorporated is located in the aft section of the fuselage between s t ations 156 and 191.
  • Page 340 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. MOTOR HEAD 2. BRUSH SPRING 3. BRUSH 4. THROUGH BOLT 5. WIRE LEAD 6. THRUST BALL 7. ARMATURE 8. MOTOR FRAME 9.
  • Page 341 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Remove valve and gear case from reservoir as follows: A. Remove eight screws from flange of body and separate the two assemblies.
  • Page 342 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ASSEMBLY OF PRESTOLITE HYDRAULIC PUMP (Refer to Figure 29-3.) (cont.) G. Check freedom of rotation and end play (thrust) of the armature within the assembly. A minimum of 0.005 inch end play is permissible.
  • Page 343 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GROUND - BLACK HIGH PRESS. - BLUE LOW PRESS. - GREEN PORT #1 PORT #1 HIGH PRESSURE LOW PRESSURE + 14 VDC (ONE ONLY) 3000 1000 FUSE - 14 VDC Figure 29-4. Test and Adjustments of Prestolite Hydraulic Pump...
  • Page 344 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TEST AND ADJUSTMENT OF PRESTOLITE HYDRAULIC PUMP (Refer to Figure 29-4.) (cont.) Connect blue lead to positive terminal of power supply. Pump should operate and the high pres- sure, gauge should indicate between 2000 and 2500 psi.
  • Page 345 156 and 191. Access to the pump is through the access panel in the baggage compartment. 1. Remove the ABS nose gear cover. 2. Remove anti-splash cover (Piper P/N 96374-0) by removing the four attaching screws, 3 . Disconnect the three knife connectors that attach the black, blue, and green forward and reverse h a rness wires.
  • Page 346 1. MOTOR ASSEMBLY 2. BASIC PUMP-ADAPTER 3. RESERVOIR ASSEMBLY 4. BRACKET-MOUNTING 5. BASE-PUMP 6. RESTRICTOR ELBOW (PIPER P/N 01972-2) 7. 401 269 BOLT (3 REQUIRED) 8. 494 192 WASHER (3 REQUIRED) 9. 494 192 WASHER (9 REQUIRED) 10. DECK ASSEMBLY 11.
  • Page 347 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PUMP TO ADAPTER BOLTS DIPSTICK ADAPTER RESERVOIR SEAL CAUTION AFTER FILLING RESERVOIR, TIGHTEN DIPSTICK. THEN BACKOFF 1 1/2 TURNS. THIS IS REQUIRED TO ALLOW RES- ERVOIR TO BE VENTED.
  • Page 348 INSTALLATION OF PIPER BRACKET TO OILDYNE HYDRAULIC PUMP ASSEMBLY (Refer to Figure 29-6, Sheet 1 of 2) 1. If bracket was removed from was removed from pump mount, install bracket to Piper pump mount with four MS24693-S298 screws. 1. Position pump assembly on bracket so that tapped holes in oildyne adapter align with bolt holes on bracket.
  • Page 349 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LANDING GEAR FREE-FALL VALVE ASSEMBLY INSPECTION AND REPAIR OF FREE-FALL VALVE This valve is located on the right side of the forward bulkhead at station 40.75 Inspection is limited to determining if any signs of hydraulic fluid leakage are evident around the seam between the end fitting and valve body, and around the periphery of the piston assembly shaft.
  • Page 350 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 6. Disengage the nose gear downlock, (see CAUTION) retract nose gear slightly to remove gear from its downlocked position. 7. Disconnect the gear downlock spring from upper drag link.
  • Page 351 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ASSEMBLY OF NOSE GEAR ACTUATING CYLINDER. (Refer to Figure 29-6.) 1. Install O-ring on the exterior of the end gland. 2. Install O-ring in the interior of the end gland.
  • Page 352 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. END GLAND 6. PISTON 2. BACK-UP RING 7. CYLINDER BODY 3. O-RING 8. O-RING 4. RETAINER RING 9. CLEVIS 5. O-RING 10.
  • Page 353 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISASSEMBLY OF MAIN GEAR ACTUATING CYLINDER. (Refer to Figure 29-7.) 1. With the cylinder removed from the airplane, push the piston rod (by hand) toward the clevis to remove oil from the unit.
  • Page 354 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HYDRAULIC LINES. REMOVAL AND INSTALLATION OF HYDRAULIC LINES. Remove a damaged hydraulic line by disconnecting the fitting at each end and by disconnecting where secured by brackets.
  • Page 355 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL HYDRAULIC PUMP O-RINGS PUMP BASE PRESSURE SWITCH HYDRAULIC LINES EMERGENCY EXTEND CONTROL EMERGENCY EXTEND VALVE (STA. 40.75) NOSE GEAR ACTUATOR MAIN GEAR ACTUATOR (RIGHT) 10.
  • Page 356 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 2C24...
  • Page 357 C H A P T E R ICE AND RAIN PROTECTION...
  • Page 358 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 30 - ICE AND RAIN PROTECTION TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 30-00-00 GENERAL 1-83 30-01-00 Description and Operation...
  • Page 359 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 30 - ICE AND RAIN PROTECTION (cont) TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 30-60-00 PROPELLER DEICE SYSTEM 30-61-00...
  • Page 360 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 30 - ICE AND RAIN PROTECTION (cont) TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 30-80-00 DETECTION 30-81-00 Wing Ice Detection Light...
  • Page 361 GENERAL. The material contained herein provides information for general maintenance of the ice protection system. If further information is necessary contact the product manufacturer or Piper Service Representative. DESCRIPTION AND OPERATION. The ice protection system may contain any of five separate systems: a pneumatic deice system; an electrical prop deice system;...
  • Page 362 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Both the standard two-bladed propeller installation and the optional three bladed propeller installation utilize single element deicers. When the switch is turned on power is directed through the brush block and slip ring to all the heating elements on one propeller for approximately 34 seconds.
  • Page 363 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3001. TROUBLESHOOTING (PNEUMATIC DEICE SYSTEM) Trouble Cause Remedy Deicers do not inflate. Open circuit breaker. Push circuit breaker Both engines operating to reset.
  • Page 364 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3001. TROUBLESHOOTING (PNEUMATIC DEICE SYSTEM) Trouble Cause Remedy Deicers innate. indicator Indicator lamp burned Replace lamp. light does not function. out.
  • Page 365 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3254 1. INFLATE CONTROL VALVE 2. FLOW CHECK VALVE 3. DRY AIR PUMP EXHAUST 4. DRY AIR PUMP 5. EXHAUST VALVE (DEFLATE/ VACUUM HOLD-DOWN VALVE 6.
  • Page 366 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSPECTION. A ground check of the entire deicer system should be made at least every 100 hours. Before checking the system, all deicers should be inspected for damaged areas and repaired according to the procedure in this section outlining the cold patch or vulcanized repairs.
  • Page 367 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3002. OPERATING PRESSURES Recommended Operating Pressure Test Pressure PSIG in PSIG MIN. MAX. — CAUTION — OIL WHICH REACHES THE DEICERS WILL CAUSE RAPID DETERIORATION OF THE RUBBER.
  • Page 368 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRICAL TESTS. 1. With engines “OFF” turn ON - Master Switch. 2. TIMER: Activate the De-Ice System Switch. (Caution: Do not hold Surface De-ice Switch in “ON”...
  • Page 369 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CONTROL VALVES. After 100 hours of engine operation, the valve poppet and internal lining of the control valve can become coated with a film of dried oil causing the valve to stick. To determine if valve poppet is sticking, perform electrical test.
  • Page 370 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. From the center line of the leading edge to the lower trailing edge of the deicer, use the pressure handle squirt can to soften the bond between the deicer and the wing skin.
  • Page 371 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B u ff the area around the damage with buffing stick, Part No. 74-451-75, so that the surface is thoroughly roughened. Apply the patch to the deicer with the stretch in the widthwise direction of the inflatable tubes, sticking edge of patch in place, working remainder down with slight pulling action so the injury is closed.
  • Page 372 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 30-2. Deice Control Panel Installation 3 0 - 1 3 - 0 8 Page 30-12 Revised: May 15, 1989 2D16...
  • Page 373 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLING PNEUMATIC BOOTS. — Note — The following procedures assume the aircraft is set up with the provisions for the necessary connections and hardware.
  • Page 374 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3003. MATERIAL AND SUPPLIES FOR COLD REPAIR Part No. Quantity Description 74-451-C Cold Patch Repair Kit (FSN 1650-856-7939) (B. F. Goodrich Co.) 74-451-11 1/1 pt.
  • Page 375 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. MATERIAL AND SUPPLIES FOR COLD REPAIR (cont) Part No. Quantity Description The following materials may be obtained from local supply:...
  • Page 376 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PREPARATION OF DEICER BOOT. Moisten a clean cloth with MEK or Acetone and carefully clean the rough, back surface of the boot at least twice.
  • Page 377 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. Rubber roll, apply pressure over entire surface of the deicer. All rolling should be done parallel to the inflatable tubes. Roll trailing edges with a narrow stitcher-roller.
  • Page 378 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A minimum of five pounds tension (pull) shall be required to remove the test strip. If less than five pounds is required, then acceptability of the boot adhesion shall be based on the following tests: 1.
  • Page 379 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Before applying Icex, thoroughly clean deicer or other rubber surfaces with a rag dampened with non-leaded gasoline. Follow by a scrub wash of mild soap and water. Allow time for surfaces to dry.
  • Page 380 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 5. Apply one brush coat of A-56-B cement to deicer and allow to dry at least one hour. Then apply second coat and allow to dry at least four hours before operating deicers. Plane may be flown as soon as cement is dry.
  • Page 381 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PITOT AND STATIC. The optional heated pitot head is located on the undersurface of the left wing. It is controlled by an ON/OFF type switch labeled PITOT HEAT which is located on the switch panel to the left of the pilot.
  • Page 382 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PROPELLER DEICE SYSTEM. DESCRIPTION AND OPERATION. The B.F. Goodrich propeller deice system installed on the PA-44-180T uses the single element type deicer boots.
  • Page 383 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) Trouble Cause Remedy Ammeter shows zero current Tripped circuit breaker Locate and correct all phases of the timer switch.
  • Page 384 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont) Trouble Cause Remedy Ammeter shows normal Open between brush If there is voltage to brush...
  • Page 385 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont) Trouble Cause Remedy Ammeter shows low current Ammeter faulty. Test for voltage up to over entire cycle.
  • Page 386 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont) Trouble Cause Remedy Ammeter shows normal Ground between brush If no short exists at brush current part of cycle, block and deicers.
  • Page 387 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont) Trouble Cause Remedy Ammeter flicks between Loose or poor connection If trouble occurs in part of 90 second phase periods.
  • Page 388 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3004. TROUBLESHOOTING (PROPELLER DEICER SYSTEM) (cont) Trouble Cause Remedy Cycling sequence not Crossed connections between Check system wiring correct. timer and deicers.
  • Page 389 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3060 VIEW B (SEEE NOTE 1 AND 2) WARNING - THIS AIRCRAFT IS NOT APPROVED FOR FLIGHT IN ICING CONDITIONS PROP PROP...
  • Page 390 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C234 THREE-BLADED INSTALLATION 1. PROPELLER DEICER BOOTS 2. SLIP RING 3. CONNECTOR 4. MODULAR BRUSH ASSEMBLY 5. SHUNT 6. TIMER 7. AMMETER 8.
  • Page 391 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL USING THE AMMETER. Whether in flight or during ground testing, the ammeter can be used to indicate the general nature of most electrical problems.
  • Page 392 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 100 HOUR INSPECTION. 1. Remove cowling. 2. Conduct 50 hour inspection. 3. Check for radio noise or radio compass interference by operating the engine at near takeoff power with radio gear ON while turning deicer switch ON and OFF.
  • Page 393 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DIAL INDICATOR STARTER RING GEAR WITH SLIP RING ASSEMBLY Figure 30-4. Suggested Use of Dial Indicator BRUSH LOCATED INCORRECTLY ON SLIP RING...
  • Page 394 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C178 2° 2° ROTATION ROTATION SLIP RINGS SLIP RINGS MOUNTING BRACKET TORQUE 50 TO 70 IN.-LBS. SPACER MODULAR BRUSH ASSEMBLY 3E2090-1 TERMINAL “ B ”...
  • Page 395 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MODULAR BRUSH ASSEMBLIES. BRUSH MODULE REPLACEMENT. Brush wear may be measured as shown in Figure 30-7. The X-dimension given (in inches) indicates when the brushes must be replaced.
  • Page 396 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A485 NOTE TWO 3E2011 BRUSH MODULE ASSEMBLIES ARE REQUIRED TO PRODUCE ONE 3E2090-1 MODULAR BRUSH ASSEMBLY Figure 30-8. Brush Module Assembly 3E2011 C177 1.
  • Page 397 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Restack modules and spacer as shown in Figure 30-9. — Note — Ascertain flat washer is positioned between star washer and housing.
  • Page 398 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PROPELLER DEICER BOOTS. RESISTANCE CHECK OF DEICER BOOTS. To determine incorrect resistance, short or open at the brush-to-slip ring contact, disconnect harness at the brush block and use low range ohmmeter to read resistance from each deicer circuit lead (Pins B and C of brush block) to ground;...
  • Page 399 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Remove the pattern and remove any paint in the marked off area. Clean down to bare metal. Next, clean the area thoroughly with MEK or acetone. For final cleaning, wipe the solvent off quickly with a clean, dry lint-free cloth to avoid leaving a film.
  • Page 400 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3005. REQUIRED MATERIALS FOR REPAIR OF PROPELLER DEICER The materials and tools listed below are commercially available and are not supplied by B.F.
  • Page 401 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF DEICER AND REQUIRED MATERIALS. It is imperative that the following instructions be followed exactly to insure maximum adhesion to the propeller blades: 1.
  • Page 402 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C180 SHADED AREA REPRESENTS SEALER CEMENTED AREA DEICER FILLER SEALER DEICER SECTION A - A DEICER CEMENTED AREA SEALER 21/2” DISTANCE OF FILLER...
  • Page 403 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL WRINKLED DEICERS. ( Refer to Figure 30-12) If edge of deicer is found wrinkled or loose, try recementing. Use MEK or Toluol to loosen the bond for an additional 1/4 inch beyond the loose or wrinkled area.
  • Page 404 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF DEICER WIRING HARNESS. (Refer to Figure 30-13.) The propeller deice wiring harness is secured to the propeller counterweight as follows: 1.
  • Page 405 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C176 SEE VIEW A 1. PROP DEICER 2. DEICER LEADS 3. DEICER WIRE HARNESS 4. LEAD CLIP 5. SLIP RING WIRE HARNESS 6.
  • Page 406 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OTHER COMPONENTS. Do not attempt internal repairs of the timer, ammeter or switch. If inoperative, these components must be replaced with one of the correct part numbers. For any other repair or maintenance problems not covered in this manual, inquire at Transportation Products Division of the B.F.
  • Page 407 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3061 C175 INSTRUMENT PANEL VIEW A - A 1. ICE LIGHT ASSEMBLY 2. WING ROOT DISCONNECT 3. SWITCH 4. CIRCUIT BREAKER 5. LENS 6.
  • Page 408 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION. 1. Position the new lamp in the receptacle of the socket, then secure the socket in the retainer with the screws.
  • Page 409 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL If the red light comes on, touch the red wire connector to the black wire connector (wires to instrument from probe). The red light must go out. If the red light does not go out, the instrument is inoperative and must be returned to ARP Industries, Inc.
  • Page 410 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B865 L. ENGINE CARBURETOR PROBE PROBE CARBURETOR R. ENGINE L. ENGINE WARNING LAMP R. ENGINE ANNUNCIATOR 107.AP PANEL KNIFE KNIFE CONNECTORS CONNECTORS...
  • Page 411 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C692 REFER TO ELECTRICAL SCHEMATIC - CHAPTER 91 RED AND WHITE WIRES (INB’D AND OUTB’D) TO H2A4 PURPLE WIRES (INB’D AND OUTB’D)
  • Page 412 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL FUNCTIONAL CHECK OF LIFT DETECTORS. 1. Insert microswitch key under leaf of main gear squat switch. 2. With flaps in 0° and 10° positions, the outboard. lift sensor should activate when lifted.
  • Page 413 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 2F9 THROUGH 2F12 INTENTIONALLY LEFT BLANK...
  • Page 414 C H A P T E R LANDING GEAR 2F13...
  • Page 415 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 32 - LANDING GEAR TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 32-00-00 GENERAL 2F17 32-01-00 Description and Operation 2F17...
  • Page 416 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 32 - LANDING GEAR TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 32-20-00 NOSE GEAR (cont) 32-23-00 Nose Gear Doors...
  • Page 417 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 32 - LANDING GEAR TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 32-40-00 WHEELS AND BRAKES 32-44-14 Disassembly of Brake Cylinder...
  • Page 418 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This chapter consists of instructions for the overhaul, inspection and adjustment of the various components of the landing gear and brake system, including adjustment of the electrical limit, safety and warning switches. This chapter does not cover the hydraulic function of the landing gear retracting system.
  • Page 419 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) Trouble Cause Remedy Red gear unsafe light out Indicator lamp burned out. Replace lamp. while gear is in transit.
  • Page 420 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) (cont) Trouble Cause Remedy Red gear unsafe light Light circuit wire loose. Check wiring. operates on and off after Far has retracted.
  • Page 421 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) (cont) Trouble Cause Remedy Red gear unsafe light and Diode in circuit between Replace diode. horn fail to operate when throttle switch “A”...
  • Page 422 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) (cont) Trouble Cause Remedy Green gear down lights Failed instrument panel Replace switch. dim though position light light control switch.
  • Page 423 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) (cont) Trouble Cause Remedy Nose gear fails to steer Oleo cylinder binding in Lubricate strut housing properly.
  • Page 424 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3201. TROUBLESHOOTING (LANDING GEAR) (cont) Trouble Cause Remedy Excessive or uneven wear Incorrect operating Inflate tire to correct on main tires.
  • Page 425 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MAIN GEAR. MAIN GEAR OLEO. DISASSEMBLY OF MAIN GEAR OLEO. (Refer to Figure 32-1.) The main gear oleo assembly may be removed and disassembled from the gear oleo housing with the gear removed from or installed in the airplane.
  • Page 426 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2272 1. NUT 2. TRUNNION ASSEMBLY 3. WASHER 4. AIR VALVE 5. BUSHING 6. RETAINER RING 7. O-RING 8. TORQUE LINK - UPPER 9.
  • Page 427 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ASSEMBLY OF MAIN GEAR OLEO. (Refer to Figure 32-1.) 1. Determine that all parts are cleaned and inspected. 2. To install the piston tube plug, first lubricate the plug O-ring with hydraulic fluid (MIL-H-5606) and install it on the plug.
  • Page 428 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 5-6-7 17-18 25-26 11-12 13-14 20-21 22-23 Figure 32-2. Main Gear Service Tolerances 3 2 - 11 - 0 3 Page 32-11...
  • Page 429 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Manufacturers Service Service Fig. No. Part No. Nomenclature Dimension Dimension Tol. Remarks 67514-0 Link upperside brace ID .3645 .3625 63900-89 Bushing, upperside **ID .249...
  • Page 430 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Manufacturers Service Service Fig. No. Part No. Nomenclature Dimension Dimension Tol. Remarks 78720 Rod End, lowerside brace ID .492 link .490 67926-06 Trunnion housing, side ID .7530...
  • Page 431 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MAIN LANDING GEAR ASSEMBLY. REMOVAL OF MAIN LANDING GEAR. (Refer to Figure 32-3.) 1. Place the airplane on jacks. 2. The side brace link assembly may be removed by the following procedure.
  • Page 432 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. Check the general condition of each limit switch and its actuator, and wiring for fraying, poor connections or conditions that may lead to failures.
  • Page 433 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A591 TORQUE SUPPORT BRACKET ATTACHMENT BOLTS 20 TO 25 INCH-POUNDS NOTE It may have been necessary to use special landing gear attachment hardware during assembly of the aircraft due to manufacturing tolerances.
  • Page 434 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1763 1. SUPPORT FITTING, AFT 2. SNAP RING 3. BEARING 4. RETAINER, TUBE ASSEMBLY 5. FITTING, GREASE 6. HINGE, GEAR DOOR 7. BOLT, WASHERS AND NUT 8.
  • Page 435 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF MAIN LANDING GEAR. 1. Place the airplane on jacks. 2. Level the airplane laterally and longitudinally. (Refer to Chapter 8.) 3.
  • Page 436 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3202. TOE-IN, TOE-OUT CORRECTION TOE-IN TOE-OUT SHIM WASHERS WASHERS AN 174 ANGLE WASHERS UNDER HEAD UNDER NUT BOLT 0° AN960-416 AN960-416 (3) 0°...
  • Page 437 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 5. Should a condition exist that all spacer washers have been removed and it is still necessary to move the wheel further in or out, then it will be necessary to turn the torque link assembly over. This will put the link connecting point on the opposite side allowing the use of spacers to go in the same direction.
  • Page 438 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BRACKET RIVET WASHER 6.50 SKETCH A BRACKET A & B SKETCH B Figure 32-4. Aligning Main Gear 3 2 - 1 3 - 0 3...
  • Page 439 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOSE GEAR. NOSE GEAR OLEO. DISASSEMBLY OF NOSE GEAR OLEO. (Refer to Figure 32-5.) The nose gear oleo assembly may be removed and disassembled from the gear oleo housing with the gear removed from or installed on the airplane.
  • Page 440 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2273 1. ARM ASSEMBLY - STEERING 2. NUT 3. BOLT 4. BOLT 5. BUSHING 6. NUT 7. BRACKET - ALIGNER 8. SNAP RING 9.
  • Page 441 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ASSEMBLY OF NOSE GEAR OLEO. (Refer to Figure 32-5.) 1. Ascertain that parts are cleaned and inspected. 2. To install the piston tube plug, first lubricate the tube plug and “O” ring with hydraulic fluid (MIL-H-5606) and install the “0”...
  • Page 442 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A589 2317 1. NOSE GEAR ASSEMBLY 2. CENTERING SPRING ASSEMBLY 3. ASSIST SPRINGS 4. STEERING ARMS 5. BUNGEE ASSEMBLY 6. STEERING BELLCRANK 7.
  • Page 443 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NOSE LANDING GEAR ASSEMBLY. REMOVAL OF NOSE LANDING GEAR. (Refer to Figure 32-6.) 1. Place the airplane on jacks. (Refer to Chapter 7.) —...
  • Page 444 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3059 11-12 24-25 13-14 11-12 9-10 15-16 20-21 17-18 22-23 Figure 32-7. Nose Gear Service Tolerances 3 2 - 2 2 - 0 2...
  • Page 445 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Manufacturers Service Service Fig. No. Part No. Nomenclature Dimension Dimension Tol. Remarks 67146-00 Draglink, upper ID .6235 ID .6230 .002 .6245 .6250...
  • Page 446 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Manufacturers Service Service Fig. No. Part No. Nomenclature Dimension Dimension Tol. Remarks 67026-07 Bearing, tube assembly **ID .314 ID .3155 .0025 Press fit. Install torque link fitting .313...
  • Page 447 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Check the gear downlock hook spring for load tension below minimum allowable tolerance. The minimum tension of the spring is 10.5 pounds pull at 4.5 inches. Measurement is also taken from the inner side of each hook.
  • Page 448 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Check alignment of the downlock hook to determine if it grips the roller bearing so as not to contact the bolt head, the bearing attachment block or washer. If the downlock hook is inboard, or it contacts the bolt head, shim between the bearing and the bearing attachment block with washer AN960-10L, not to exceed three.
  • Page 449 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B944 B946 VIEW D - D VIEW A - A B943 .001 CLEARANCE 1. NOSE GEAR SUPPORT .005 2. HYDRAULIC RETRACT CYLINDER 3.
  • Page 450 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF NOSE GEAR DOWNLOCK AND ECCENTRIC BUSHING. (Refer to Figure 32-8.) 1. Install the new eccentric bushing. (Refer to Figure 32-8 for proper assembly.) Since the eccentric bushing will require adjustment do not tighten the bolt in its final torque.
  • Page 451 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2305 C686 SEE NOTE NOTE ADJUST STEERING CAM TO BUSHING CLEARANCE OF .031 WITH GEAR DOWN AND AIRCRAFT WEIGHT ACTING ON NOSE.
  • Page 452 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF NOSE LANDING GEAR. (Refer to Figure 32-9.) The gear up stop is located on the steering bellcrank. 1. Place the airplane on jacks. (Refer to Chapter 7.) —...
  • Page 453 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A599 1641 VERTICAL TO SEAT RAILS NEUTRAL 19° + 1°, - 0° Figure 32-10. Clamping Rudder Pedals in Figure 32-11. Rudder Pedals at Neutral...
  • Page 454 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. Place the airplane on jacks. (Refer to Chapter 7.) 5. Level the airplane laterally and longitudinally. (Refer to Chapter 8.) 6. From the center point of the tail skid, extend a plumb bob and mark the center point on the floor.
  • Page 455 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2307 1. DOOR ASSEMBLY 2. ROD ASSEMBLY 3. SUPPORT BRACKET 4. SPRING 5. ACTUATOR Figure 32-12. Mechanical Nose Gear Door Mechanism CLEANING, INSPECTION AND REPAIR OF NOSE GEAR DOORS.
  • Page 456 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. Extend the landing gear and connect both doors. 5. Retract the landing gear fully and ascertain the doors close properly and do not bind.
  • Page 457 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PC24 1. NOSE WHEEL ASSEMBLY 2. WHEEL HALF 3. BEARING CUP 4. BEARING CONE 5. GREASE RETAINER RING 6. FELT RING 7. SNAP RING 8.
  • Page 458 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — Note — On aircraft models which use the Cleveland Wheel Assembly torque nuts to 90 inch- pounds. Those aircraft models which use the McCauley Wheel Assembly torque nuts to 140-150 inch-pounds.
  • Page 459 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PC27 MINIMUM DISC THICKNESS* MEASURED AT 3 POINTS TO GET AVERAGE. DISC P/N MIN. *164-22A = .345 *164-46 = .405 1. MAIN WHEEL ASSEMBLY 2.
  • Page 460 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. Bearing Cup Replacement: Removal: (1). Insert wheel half into boiling water for 15 minutes or place in an oven not exceeding 250° F ( 121° C) for 15 minutes.
  • Page 461 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PC28 .100 MIN. 30-65 BRAKE ASSEMBLY 1. BRAKE CYLINDER 7. BRAKE LINNG 2. PISTON 8. RIVET .100 3. O-RING 9. BACK PLATE BRAKE LINING MIN.
  • Page 462 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A122 PRESS CYLINDER BODY ANCHOR BOLT HOLDING FIXTURE STEP A CYLINDER BODY ANCHOR BOLT HOLDING FIXTURE HOLDING FIXTURE STEP B STEP C...
  • Page 463 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CLEANING, INSPECTION AND REPAIR OF WHEEL BRAKE ASSEMBLY. 1. Clean the assembly with a suitable solvent and dry thoroughly. 2. Check the wall of the cylinder housing and piston for scratches, burrs, corrosion, etc., that may damage “O”...
  • Page 464 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2312 1. RESERVOIR 2. KNOB, PARKING BRAKE 3. MASTER CYLINDERS 4. FLUID LINE 5. VALVE, PARKING BRAKE 6. BRAKE ASSEMBLY Figure 32-17. Brake Installation...
  • Page 465 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 10 11 1. VALVE BODY 2. FITTING 3. SPRING 4. VALVE 16 17 18 5. “O” RING 6. NUT 7. WASHER 8. BUSHING 9.
  • Page 466 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C578 8 9 10 2 3 4 5 6 7 13 14 1. HOUSING 6. PISTON 11. SPRING 2. RETAINING RING 7. SEAL 12.
  • Page 467 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2637 1. HOUSING 2 3 4 5 6 7 8 910 11 14 15 2. RETAINING RING 3. SLEEVE 4. SPRING 5. O-RING 6.
  • Page 468 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BRAKE CYLINDER. (Toe Brake) REMOVAL OF BRAKE CYLINDER. (Refer to Figure 32-19.) 1. Disconnect the upper and lower lines from the cylinder to be removed and cap the lines to prevent fluid leakage or drain the fluid from the brake reservoir and master cylinder.
  • Page 469 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. Gar-Kenyon cylinder number 17000. (Refer to Figure 32-19.) Install new O-rings on the inside and outside of the fitting and on the outside of the piston.
  • Page 470 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. BRACKET ASSEMBLY 2. BRACKET 3. ARM 4. ARM 5. ARM 6. ARM 7. SPACER 8. TOE BRAKE PEDALS 9. PEDAL PADS 10.
  • Page 471 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL POSITION AND WARNING. LANDING GEAR LIMIT SWITCHES. — Note — All adjustments of the limit switches should be made with the airplane on jacks. Do not bend actuator springs mounted on the limit switches.
  • Page 472 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B949 UP-LIMIT SWITCH DOWN .025 LIMIT .035 SWITCH PA-44-180 SERIAL NOS. 44-7995001 TO 44-8095037 PA-44-180 S/N 44-7995001 TO 44-8095037 PA-44-180T SERIAL NOS. 44-8107002 TO 44-8107012...
  • Page 473 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF LANDING GEAR SAFETY (SQUAT) SWITCH. The landing gear safety switch, located on the left main gear housing is adjusted so that the switch is actu- ated within the last quarter of an inch of gear extension.
  • Page 474 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF LANDING GEAR UP/POWER REDUCED WARNING SWITCH. ( W h e n Equipped with Mute Switch) When adjusting switch fly the airplane at approach speed 1000 feet AGL. (Refer to the Pilot's Operating Manual.) Use the following procedure:...
  • Page 475 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 32-25. Throttle Warning Switches (Without Mute Switch) (Sheet 1 of 2) Figure 32-25. Throttle Warning Switches (With Mute Switch) (Sheet 2 of 2)
  • Page 476 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Carry out the following procedures in the sequence designated, because each instruction is a prerequisite for the one following it. Should the system fail to respond as specified, find the malfunction and correct it before continuing.
  • Page 477 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 13. Retract the flaps and leave the gear up for 5 minutes. The pump motor should not operate at any time. If the pump should operate during the 5 minute period, search for a leak in the “UP” line or a m a l f u n ctioning component in the system.
  • Page 478 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 479 C H A P T E R L I G H T S...
  • Page 480 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 33 - LIGHTS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 33-00-00 GENERAL 1-83 33-01-00 Description and Operation 33-02-00 Troubleshooting...
  • Page 481 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The optional night lighting system renders the aircraft operational at night, thus greatly extending its capability and possible night time in any given period.
  • Page 482 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL EXTERIOR. The optional exterior lighting on the PA-44 comprises wing tip navigation and strobe lights. nose cone landing taxi light(s) and two tail lights.
  • Page 483 1 . Remove the 10 MS24693-C28 screws (Piper p/n 414-736) and PS10092-1-155 washers (Piper p/n 5 0 8 -007) securing the clear acrylic lens (Piper p/n 36752-21 or -22) to the wing. Note that the two inboard screws also secures the shield (Piper p/n 36806-4 or -5) in place.
  • Page 484 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ANTI-COLLISION STROBE LIGHTS. These lights are located in the wing tips and are part of the same assembly as the navigation lights. They are rated to flash at approximately 45 to 50 times a minute and are both supplied by one power supply.
  • Page 485 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Check for malfunction in interconnecting cables. — NOTE — A short of the type described in Steps 3 and 4 will not cause p e rmanent damage to the power supply, but will render the system i n o p e r ative.
  • Page 486 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — CAUTION — BEFORE APPLYING POWER, MAKE CERTAIN ALL ELECTRICAL CONNECTIONS ARE CORRECTLY MADE WITHOUT INTERCHANGING ANY LEADS . 2. Connect the electrical leads to the proper terminals. (Refer to the strobe power supply schematics in Chapter 91.)
  • Page 487 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 2I14 AND 2I15 INTENTIONALLY LEFT BLANK 2I14...
  • Page 488 C H A P T E R N AV I G ATION AND PITO T / S TAT I C 2I16...
  • Page 489 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 34 - NAVIGATION AND PITOT/STATIC TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 34-00-00 GENERAL 2I19 34-01-00 Description and Operation...
  • Page 490 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 34 - NAVIGATION AND PITOT/STATIC (cont) TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 34-20-00 ATTITUDE AND DIRECTION (cont) 34-24-00...
  • Page 491 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The instrument air system consists of pitot air and static air sources. The system supplies both pitot and static air pressure for the airspeed indicator, altimeter and vertical speed indicator. These instruments are face mounted.
  • Page 492 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2289 1. INSTRUMENTS 2. ALTERNATE STATIC SOURCE 3. PITOT-STATIC SUMPS 4. PITOT-STATIC LINES 5. PITOT-STATIC HEAD Figure 34-1. Pitot-Static System Installation 3 4 - 11 - 0 0...
  • Page 493 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3401. TROUBLESHOOTING (RATE OF CLIMB) Trouble Cause Remedy Pointer does not set on zero. Aging of diaphragm. Reset pointer to zero by means of setting screw.
  • Page 494 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ALTIMETER. The altimeter indicates altitude in feet above sea level. The indicator has three pointers and a dial scale, the long pointer is read in hundreds of feet, the middle pointer in thousandths of feet and the short pointer in ten thousandths of feet.
  • Page 495 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3402. TROUBLESHOOTING (ALTIMETER) (cont) Trouble Cause Remedy Altimeter changes reading Water in static line. Remove static lines from all as aircraft is banked.
  • Page 496 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3403. TROUBLESHOOTING (AIRSPEED TUBES AND INDICATOR) Trouble Cause Remedy Airspeed changes as aircraft Water in static line. Remove lines from static is banked.
  • Page 497 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING. CHART 3404. TROUBLESHOOTING (MAGNETIC COMPASS) Trouble Cause Remedy Excessive card error. Compass not properly Compensate instrument. compensated. (Refer to AC 43.13-1A Chapter 16, Section V.)
  • Page 498 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DIRECTIONAL GYRO - AIR DRIVEN/ELECTRIC. Both air and electrical directional gyros are used, depending on the option package installed. Both types are displacement type gyros with "f r e e"...
  • Page 499 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING. Unless an obvious malfunction of the instrument (such as constantly spinning dial) requires repair or replacement of the directional gyro, service is restricted to the instrument installation and power (air/ electric) requirements.
  • Page 500 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. Carefully lay teflon tape on the threads allowing one thread to be visible from the end of the fitting. Hold in place and wrap in the direction of the threads so tape will remain tight when fitting is installed.
  • Page 501 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OPERATIONAL LIMITATIONS. Unlike the directional gyro, the attitude horizon has no attitude limits. If, however, pitch reaches 90°, the “polar effect” is reached and the horizon bar display will rotate 180° to an inverted position and will again rotate 180°...
  • Page 502 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL yaw and roll forces to the human operator's ability to interpret and respond the displays. The “ball” portion of both instruments is free to roll within the inclined glass tube display on lower instrument face. The glass tube is filled with non-freezing liquid to dampen the movements of the ball within the tube.
  • Page 503 C H A P T E R O X Y G E N...
  • Page 504 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 35 - OXYGEN TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 35-00-00 GENERAL 1-83 3S-01-00 Description and Operation 35-02-00 Troubleshooting...
  • Page 505 A fixed and/or portable oxygen system is available for the 180T aircraft. Scott Aviation manufactures the major components for these systems and should be contacted along with Piper Customer services for any further information not covered herein. For specific parts information refer to the Piper Parts Catalog.
  • Page 506 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL VIEW A - A 1. OXYGEN CYLINDER 2. REGULATOR ASSEMBLY 3. OXYGEN GAUGE 4. RECHARGE VALVE ASSEMBLY 5. REAR OUTLET ASSEMBLY 6. FORWARD OUTLET ASSEMBLY 7.
  • Page 507 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REAR SEATS 2632 OXYGEN KIT PLACARD FLOORBOARD SUPPORT ASSEMBLY FLOOR PLATES Figure 35-2. Portable - Oxygen System CREW/PASSENGER SYSTEM. — CAUTION —...
  • Page 508 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING. (Refer to Chart 3501) CHART 3501. TROUBLESHOOTING (OXYGEN SYSTEM) Trouble Cause Remedy No indication of pressure on Cylinder empty and/or leak in Purge, charge, and check pressure gauge.
  • Page 509 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL FIXED OXYGEN SYSTEM. INSPECTION, MAINTENANCE AND OVERHAUL TIME LIMITS. Due to the nature of the process used to test compressed gas tanks, servicing and hydrostatic tests must be conducted by a DOT or manufacturer (Scott Aviation) approved shop.
  • Page 510 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PARTS INSPECTION OVERHAUL Regulator 300 Flight Hrs. 6 Yrs. Pressure Gauge 300 Flight Hrs. Replace On Condition High Pressure Lines 300 Flight Hrs.
  • Page 511 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B870 1/8" MIN. 1/8" MIN. 1/8" MIN. SKETCH B SKETCH A SKETCH C SKETCH D NEOPRENE HOSE MAY BE SLIT TO FIT OVER TUBING SECURE WITH MS3367 CABLE TIES.
  • Page 512 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 9. Make sure to check the oxygen lines for proper clearance as follows: (Refer to Figure 35-4.) Two inch minimum between oxygen tubes and all flexible moving parts of the aircraft (flexible control cables.
  • Page 513 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Dry with air as described in previous caution or by heating at a temperature of 250° to 300° F for one half hour.
  • Page 514 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STEP 1 TURN THE FITTING NUT ONTO THE FITTING FINGER TIGHT AND INSERT THE TUBE UNTIL IT BOTTOMS FIRMLY ON THE SHOULDER IN THE FITTING.
  • Page 515 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Preswaged swageloc fittings are fabricated and installed as follows: Assemble the nut and ferrules finger tight on the pre-swaging tool and insert the tube until it firmly bottoms on the shoulder in the tool.
  • Page 516 Ports on regulators, indicators, and other opened components must also be kept capped or plugged to prevent ingestion of foreign material. Adjustments or modifications should only be initiated under the auspicious of the FAA, Piper, or Scott Aviation. REMOVAL OF OXYGEN CYLINDER. (Refer to Figure 35-1.) —...
  • Page 517 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MAINTENANCE MANUAL 2. It is recommended that when working in the rear of the aircraft an appropriate tailstand be properly attached to the tail.
  • Page 518 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF OXYGEN CYLINDER. 1. Before mounting the cylinder to the shelf. connect the control cable to the control valve-regulator. If the shelf has been removed reinstall it before continuing.
  • Page 519 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF OUTLETS. 1. Apply teflon tape to male threads of the affected fitting. Refer to appropriate procedure in this chapter. 2. Connect the outlet to the low pressure line.
  • Page 520 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3503. FILLING PRESSURE FOR CERTAIN AMBIENT TEMPERATURES Ambient Temperature Filling Pressure Ambient Temperature Filling Pressure 1650(PSI) 1975 (PSI) 1700 2000 1725...
  • Page 521 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL (4). A good deal of oxygen will remain in the large cylinders used in the cascade system after filling only one of the cylinders but such remaining oxygen will be at pressure something less than the 1850 psi which is not sufficient pressure to completely refill another aircraft cylinder, although it will refill several smaller cylinders.
  • Page 522 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MAINTENANCE. 1. Check the cylinder to be sure it is securely mounted. 2. Check the cylinder for the ICC identification number and for the date of the last FAA inspection and test.
  • Page 523 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 2K3 THROUGH 2K5 INTENTIONALLY LEFT BLANK...
  • Page 524 C H A P T E R VA C U U M...
  • Page 525 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 37 - VACUUM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 37-00-00 GENERAL 37-01-00 Description and Operation 37-02-00 Troubleshooting 37-10-00...
  • Page 526 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The instrumentation is designed to give a quick and actual indication of the attitude. performance and condition of the airplane. Maintenance, other than described in this chapter shall be done by the instrument manufacturer or an authorized repair station.
  • Page 527 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2290 NOTES 1. VACUUM GAUGE 1. WHEN INSTALLING FITTINGS 2. INSTRUMENTS INTO INSTRUMENT CASES, DO NOT 3. FILTER EXCEED PLACARDED TORQUE 4. PUMPS LIMITATIONS.
  • Page 528 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3701. TROUBLESHOOTING (VACUUM SYSTEM) Trouble Cause Remedy Vacuum correct on ground Vacuum pump mal- Replace pump. but will not maintain pres- functioning.
  • Page 529 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3701. TROUBLESHOOTING (VACUUM SYSTEM) (cont) Trouble Cause Remedy No vacuum gauge indi- Filter clogged or dirty. Clean or replace filter. cation at instrument.
  • Page 530 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISTRIBUTION. VACUUM SYSTEM SERVICE TIPS. The following information is intended to acquaint field service personnel with important vacuum system service procedures on those components which are serviced by removal and replacement. These items include hoses, clamps, gyro filter, vacuum regulating valves and vacuum gauge.
  • Page 531 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL (4). Press tape will into threads. (5). Screw fitting into port being careful not to exceed torque requirements noted on decal on then cover of the gyro.
  • Page 532 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL The gyros themselves act as a limiting device to keep the vacuum power applied from exceeding safe levels. — Note — If the panel gauge has been checked and found OK and the vacuum gauge reading does not repeat within the range of 5.0 ±...
  • Page 533 THE ONLY DRY AIR PUMP MOUNTING GASKET AUTHORIZED AND APPROVED FOR USE ON AIRBORNE DRY AIR PUMP IS THE AIRBORNE GASKET B3-1-2, PIPER PA RT NUMBER 751 859. USE OF ANY OTHER GASKET MAY RESULT IN OIL SEEPAGE OR LEAKAGE AT THE MOUNTING SURFACE.
  • Page 534 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 2K16 THROUGH 2K18 INTENTIONALLY LEFT BLANK 2K16...
  • Page 535 C H A P T E R E L E C T R I C A L / ELECTRONIC PANELS AND M U LTIPURPOSE PA R T S 2K19...
  • Page 536 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 39 - ELECTRICAL/ELECTRONIC PANELS AND MULTIPURPOSE PARTS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 39-10-00 INSTRUMENT AND CONTROL PANELS...
  • Page 537 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTRUMENT AND CONTROL PANELS. REMOVAL AND REPLACEMENT OF FACE MOUNTED INSTRUMENTS. The instrument panel installed on aircraft S/N 44-95001 and up, consist of two all metal panels without a face panel.
  • Page 538 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3901. TROUBLESHOOTING (ANNUNCIATOR PANEL) Trouble Cause Remedy All lights fail to operate. No current. Check all wire segments, connections and the receptacle at the side of the annunciator panel.
  • Page 539 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 3901. TROUBLESHOOTING (ANNUNCIATOR PANEL) Trouble Cause Remedy LO BUS warning light fails Lamp burned out. Replace lamp. to illuminate. HTR OVERTEMP light fails Lamp burned out.
  • Page 540 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C179 O V E R O V E R B O O S T B O O S T PLATE PRESS-TO-TEST SWITCH...
  • Page 541 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REPLACEMENT OF ANNUNCIATOR PANEL LIGHT BULBS. Replacement of a bulb does not require removal of the annunciator panel. The lenses are designed to be a friction fit in the annunciator panel and the light bulbs fit into the back side of the lenses.
  • Page 542 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C688 INSTRUMENT PANEL CLOCK - CA7287 MOUNTED CLOCK BORG INSTRUMENT INSTRUMENT PANEL (REAR VIEW) WIRE ASSEMBLY 87347-4 (GROUND) 87352-60 WIRE ASSEMBLY (GROUND)
  • Page 543 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C679 CONTROL WHEEL MOUNTED CLOCK INSTALLATION - OPTIONAL MODE MODE ST/SP NO. 4 FLAT HEAD, SELF-TAPPING, ASTROTECH LC-2P 7/8 IN. LONG, SCREW (4 EACH)
  • Page 544 They arc on a circuit breaker panel on the lower right hand corner of the instrument panel. — Note — PA-44-180 S/N 44-7995001 thru 44-8195016 and PA-44-180T S/N 44-8107001 thru 44-8107044 refer to latest revision Piper Service Bulletin No. 696. 3 9 - 4 1 - 0 0 Page 39-08...
  • Page 545 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF ELECTRICAL SWITCHES. 1. For a particular switch removal, remove the screws on the front of the panel. 2. From behind the panel remove the switch, and disconnect the electrical connections.
  • Page 546 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INTENTIONALLY LEFT BLANK...
  • Page 547 C H A P T E R S T R U C T U R E S...
  • Page 548 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 51 - STRUCTURES TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 51-00-00 GENERAL 51-01-00 Description 51-10-00 STRUCTURAL REPAIRS 51-11-00 BAGGAGE COMPARTMENT INSPECTION...
  • Page 549 While Figure 51-2 shows the hole in the left side of the baggage compartment, a similar hole is also cut out in the right side baggage compartment floor. Installation will require two each inspection access covers, Piper P/N 62109-0. LAYOUT CUT LINES Gain access to baggage compartment.
  • Page 550 (puncture, breaks, and holes that have penetrated through the structure and damaged the fiberglass cloth). A repair kit, part n u mber 766 222 gives necessary material for such repairs, and is available from Piper Aircraft dealers. —CAUTION—...
  • Page 551 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL NO. OF SKIN MATERIAL THICKNESS 2024-T3 0.016 2024-T3 0.020 2024-T3 0.020 2024-T3 0.025 2024-T3 0.032 2024-T3 0.032 2024-T3 0.040 2024-T3 0.051 5052-H34 0.040...
  • Page 552 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 51-1. Skin Material and Thickness (Sheet 2 of 2) 51-10-00 Page 51-04 Revised: June 20, 1995 2L12...
  • Page 553 0.120” HOLE THRU N0.8 X 38 CRES TRUSS RECESSED HEAD SHEET METAL SCREWS (16 REQD.) 2.50” COVER (2 REQD) 30° TYP PIPER P/N 62109-0 10.98” 8.48” 19.11” Figure 51-2. Baggage Compartment Inspection Hole Cutout Details 51-11-00 Page 51-05 Added: June 20, 1995...
  • Page 554 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL MINOR SCRATCH AND CRACK REPAIR 1 . Remove wax, oil, and dirt from around damaged area with acetone, methylethylketone, or equivalent and remove paint to gel coat.
  • Page 555 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 8. Thoroughly wet mat and cloth with catalyzed resin. Daub resin to mat, then to cloth. Mat must be placed on structure surface with cloth on top. Use enough fiberglass cloth and mat reinforcements to maintain the original surface strength.
  • Page 556 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL THERMOPLASTIC REPAIRS — WARNING — C O M M O N S A F E T Y P R E C A U T I O N S M U S T BE F O L LOWED WHEN USING THE MATERIALS AND TOOLS FOR THESE REPAIRS.
  • Page 557 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL —CAUTION— When using a hot air gun, be careful not to overheat the t h e rm oplastic. 2. Remove large dirt particles embedded in thermoplastic parts with a hot air gun capable of heating t o 300°...
  • Page 558 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 51-4. Deep Scratches, Shallow Nicks and Small Holes Figure 51-5. Mixing of Epoxy Patching Compound The welding method requires a hot air gun and ABS rods. To weld, hold gun to direct the flow of hot air into repair zone.
  • Page 559 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 51-6. Welding Repair Method Figure 51-7. Repairing of Cracks 51-13-04 Page 51-11 Revised: June 20, 1995 2L19...
  • Page 560 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 51-8. Various Repairs 51-13-06 Page 51-12 Revised: June 20, 1995 2L20...
  • Page 561 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REPAIRING MAJOR DAMAGE: (Larger than 1 inch in diameter.) (Refer to Figure 51-8.) A. Make a patch of same material and cut slightly larger than section being repaired.
  • Page 562 PRODUCT LISTING FOR LIQUID SAFETY WALK COMPOUND 1. Suggested Solvents: Safety Solvent per MIL-S-18718 Sherwin Williams Lacquer Thinner R7KC120 Glidden Thinner No. 207 2. Safety Walk Material: Walkway Compound and Matting Nonslip (included in Piper Part No. 179 872) 51-14-02 Page 51-14 Revised: June 20, 1995...
  • Page 563 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL APPLICATION OF LIQUID SAFETY WALK COMPOUND — NOTE — Apply in an area which is free of moisture for a period of 24 hours minimum after application.
  • Page 564 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 2L24...
  • Page 565 SEMINOLE MAINTENANCE MANUAL CARD 3 OF 4 PA-44-180 SEMINOLE PA-44-180T TURBO SEMINOLE PIPER AIRCRAFT CORPORATION (PART NUMBER 761 664) June 20.1995...
  • Page 566 AIRPLANE MAINTENANCE MANUAL INTRODUCTION. This PIPER AIRCRAFT Maintenance Manual is prepared in accordance with the GAMA (General Aviation Manufacturers Association) format. This maintenance manual is divided into various Groups which enable a broad separation of contents (Chapters) within each group.
  • Page 567 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL VENDOR PUBLICATIONS. ENGINE: Overhaul Manual = TEXTRON LYCOMING - OVERHAUL MANUAL DIRECT DRIVE ENGINE - P/N 60294-7 Textron Lycoming Division Williamsport, Pa 17701 Parts Catalog = TEXTRON LYCOMING — O-360 AND LO-360 E SERIES - P/N PC-123 TEXTRON LYCOMING —...
  • Page 568 Engineered Fabrics Division Rockmart, Georgia 30153-0548 Rockmart, Georgia 30153 PIPER PUBLICATIONS. AUTOFLIGHT: AutoControl IIIB Service Manual = Piper P/N 761 502 AutoControl IIIC Service Manual = Piper P/N 761 602 PA-44-180/180T Parts Catalog = Piper P/N 761 663 Inspection Reports =...
  • Page 569 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS The Maintenance Manual information incorporated in this set of Aerofiche cards has been arranged in accordance with the general specifications of Aerofiche adopted by the General Aircraft Manufacturer's Association, (GAMA). The information compiled in this Aerofiche Maintenance Manual will be kept current by revisions distributed periodically.
  • Page 570 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS (cont) Effectivity Publication Date Aerofiche Card Effectivity ORG791212 December 12, 1979 1, 2, and 3 PR800822 August 22, 1980 1, 2, and 3 PR810223 February 23, 1981 1, 2, and 3...
  • Page 571 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID NO. AIRWORTHINESS 1A18 TIME LIMITS/MAINT CHECKS 1A21 DIMENSIONS AND AREAS 1B14 LIFTING AND SHORING LEVELING AND WEIGHING TOWING AND TAXIING 1C10 PARKING AND MOORING...
  • Page 572 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE (cont) SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID N0. LIGHTS NAVIGATION & PITOT/STATIC 2I16 OXYGEN VACUUM ELECTRICAL/ELECTRONIC PANELS AND MULTI-PURPOSE PARTS 2K19 STRUCTURES DOORS 3A18 STABILIZERS WINDOWS 3B22 WINGS 3C10...
  • Page 573 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS FIGURE NO. SUBJECT GRID NO. 6-1. Three View 1B19 6-2. Station References 1B20 6-3. Access Plates and Panels 1B22 7-1. Jacking 8-1. Leveling Airplane 8-2. Weighing 11-1. Placards and Decals (Sheet 1 of 2 1C19 11-1.
  • Page 574 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 21-19. Exploded View - Combustion Air Blower and Motor Assembly 21-20. Suggested Setup of Heater Operation Test 1G10 21-21. Wiring Connections for Heater Operation Test 1G10 21-22.
  • Page 575 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 27-2. Control Cable Inspection Technique 27-3. Cable Wear Pattern 27-4. Internal Cable Wear 27-5. Pulley Wear Patterns 27-6. Control Column Assembly 1K13 27-7. Flex (Universal) Joint Assembly 1K15 27-8.
  • Page 576 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 29-8. End Gland Locking Device (Main Gear) 2C20 29-9. Hydraulic Lines Installation 2C23 30-1. Pneumatic Deice System Installation 30-2. Deice Control Panel Installation 2D16 30-3.
  • Page 577 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 32-23. Adjustment of Main Gear Down Limit Switch 2H23 32-24. Adjustment of Nose Gear Down Limit Switch 2H23 32-25. Throttle Warning Switches (Without Mute Switch) (Sheet 1 of 2) 32-25.
  • Page 578 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 61-2. Propeller Installation 61-3. Propeller Governor 61-4. Adjustment of Propeller Control 61-5. Synchrophaser System Installation 61-6. Pulse Generator Assembly 3D11 61-7. Backup Test of Pulse Generator 3D14 61-8.
  • Page 579 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 74-19. Lifting Inner End of Spring 3G11 74-20. Checking Harness Leads Continuity 3G13 74-21. Checking Harness Leads Insulation Resistance 3G13 74-22. Modified Pliers 3G13 74-23.
  • Page 580 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS CHART NO. SUBJECT GRID NO. Leading Particulars and Principal Dimensions 1B16 1201 Thread Lubricants 2001 Maximum Distance Between Supports for Fluid Tubing 2101 Troubleshooting (Janitrol Heater) 1E17 2102 Blower System Wire Color Codes...
  • Page 581 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS (cont) CHART NO. SUBJECT GRID NO. 7101 Troubleshooting (Engine) 3D24 7301 Fuel Pressure Sender Test Specifications 3F12 7302 Troubleshooting (Fuel Pressure Gauge) 3F13 7401 Troubleshooting (Magneto) 3F18 7402 Coupling Torques 3G18...
  • Page 582 CHAPTER DOORS 3A18...
  • Page 583 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 52 - DOORS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 52-00-00 GENERAL 3A20 52-10-00 PASSENGER, CREW 3A20 1 - 83...
  • Page 584 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This airplane has one entrance door located on the right side of the fuselage and a baggage door also on the right side aft of the entrance door.
  • Page 585 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. SCREW 23. PANEL ASSEMBLY 2. HANDLE 24. SCREW 3. WASHER 25. KNOB 4. PLATE 26. HANDLE 5. CAM 27. LATCH ASSEMBLY 6.
  • Page 586 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ADJUSTMENT OF DOOR LATCH MECHANISM. To adjust the door latch, loosen the screws on the striker plate, make necessary adjustment, and retighten the screws.
  • Page 587 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DOOR SEAL SNUBBER. REMOVAL AND INSTALLATION OF DOOR SEAL SNUBBERS. (Refer to Figure 52-1a.) 1. To remove old seals use a thinner. such as toluol, that won’t affect the painted surface, and strip off the old seal.
  • Page 588 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 7/16 3/16 1 - 3/4 Figure 52-2. Fabricated Tool for Baggage Door Lock Adhesive should only be applied to that area to be covered by the seal. If necessary, tape off the affected area.
  • Page 589 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BAGGAGE DOOR LOCK ASSEMBLY. REMOVAL OF BAGGAGE DOOR LOCK ASSEMBLY. 1. With the door open remove two screws securing the access plate, remove the access plate.
  • Page 590 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3,4,5 3,4,5 3,4,5 A - A B - B C - C D - D 2313 TINNED COPPER WIRE AWG 26, .0159 DIA.
  • Page 591 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. With the scale reading the force applied, rotate the handle forward to an angle of 45°. The force required to rotate the handle shall be 20 pounds minimum, 30 pounds maximum.
  • Page 592 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3B4 THROUGH 3B7 INTENTIONALLY LEFT BLANK...
  • Page 593 CHAPTER STABILIZERS...
  • Page 594 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 55 - STABILIZERS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 55-20-00 STABILATOR AND TAB 3B10 A 1 - 83...
  • Page 595 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL STABILATOR AND TAB. STABILATOR. REMOVAL AND INSTALLATION OF STABILATOR. (Refer to Figure 55-1.) The stabilator assembly can be removed by following the procedure given below.
  • Page 596 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A595 SKETCH A SKETCH B SKETCH C WASHER AN960-416L OR BOLT AN4-6A BOLT AN3-4A WASHER AN960-416 WASHER AN960-416 WASHER AN960-10L ALTERNATE WASHERS AS...
  • Page 597 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BALANCING TOOL (REFER TO CHAPTER 91) HOLDING FIXTURE LEVEL SUPPORT STABILATOR AND TAB STATIC BALANCE LIMITS (IN. - LBS.) LEADING LEADING EDGE...
  • Page 598 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AN5-6A AN4-7A AN960-516 AN960-416C AN960-516L MS20365-428C 2 PLACES 2 PLACES AN4-6A AN960-416L MS20365-428C AN5-6A (SEE NOTE) AN5-6A AN960-516 AN960-516 UNDER NUT AN960-516L...
  • Page 599 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL VERTICAL STABILIZER. VERTICAL FIN. REMOVAL AND INSTALLATION OF VERTICAL FIN. (Refer to Figure 55-3.) 1. Remove the fin tip, tail fairing, dorsal fin at the forward edge of the fin. Disconnect upper and lower tail lights at the quick disconnects.
  • Page 600 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2303 1. UPPER RUDDER HINGE 2. RUDDER TRIM TAB 3. TRIM TAB HINGE 4. RUDDER SECTOR 5. RUDDER SECTOR STOP 6. LOWER RUDDER HINGE 7.
  • Page 601 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A400 LOCATE TOOL BALANCING TOOL (REFER TO CHAPTER 91) BALANCE POINTS DIRECTLY OVER HINGE CENTERLINE. BALANCE WEIGHT TAP TRIM TAB INTO NEUTRAL...
  • Page 602 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BALANCING RUDDER. (Refer to Figure 55-5.) PPS50011-2 1. Insure that the control surface is in its final flight configuration, static wicks, trim tabs, trim tab push-pull rod and control surface tip (as applicable) should be installed.
  • Page 603 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3B18 THROUGH 3B21 INTENTIONALLY LEFT BLANK 3B18...
  • Page 604 CHAPTER WINDOWS 3B22...
  • Page 605 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 56 - WINDOWS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 56-10-00 FLIGHT COMPARTMENT 3B24 56-11-00 Windshield 3B24 A 1 - 83...
  • Page 606 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL FLIGHT COMPARTMENT. WINDSHIELD. REMOVAL AND INSTALLATION OF WINDSHIELD. (Refer to Figure 56-1.) 1. Remove the collar from around the bottom of the windshield and the trim strip from between the windshield halves by removing the attaching screws.
  • Page 607 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B855 B854 B857 ISOCRYL TAPE ISOCRYL TAPE ISOCRYL TAPE A - A B - B C - C 2019 A - A...
  • Page 608 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2. Carefully remove the window from the frame. — Note — A damaged window should be saved to provide a pattern for shaping the new window.
  • Page 609 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ISOCRYL TAPE Figure 56-2. Side Window Installation 1. Remove the molding and retainer from around the window by removing attaching screws and rivets.
  • Page 610 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3C4 THROUGH 3C9 INTENTIONALLY LEFT BLANK...
  • Page 611 CHAPTER WINGS 3C10...
  • Page 612 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 57 - WINGS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 57-00-00 GENERAL 3C12 57-01-00 Description 3C12 57-20-00 AUXILIARY STRUCTURE...
  • Page 613 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. This chapter explains the removal and installation procedures for the wings and related components from the aircraft. DESCRIPTION. Each wing panel is an all metal, full cantilever, semi-monocoque type structure with removable tips and access panels.
  • Page 614 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ATTACH FITTINGS. WING ATTACHMENT. REMOVAL OF WING. (Refer to Figure 57-1.) 1. Close the fuel valve and drain the fuel from the wing to be removed. (Refer to Draining Fuel System, Chapter 12.)
  • Page 615 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A354 0.35 MAX. 0.12 MIN. BOLT NAS464-P5LA15 NUT MS21042-5 WASHER AN960-516L (UNDER HEAD) WASHER AN960-516 (SEE NOTE) MAX. TORQUE 130 - 150 IN. - LBS.
  • Page 616 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BOLT LEGEND 1* POSITION BOLT WASHER UNDER HEAD WASHER UNDER NUT NAS464P6LA17 MS21042-6 (1) AN960-616 (1) AN960-616 (2 MAX.) NAS464P6LA16 MS21042-6 (1) AN960-616 (1) AN960-616 (2 MAX.)
  • Page 617 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF WING. (Refer to Figure 57-1.) 1. Ascertain that the fuselage is positioned solidly on a support cradle. 2. Place the wing in position for installation, with the spar end a few inches from the side of the fuselage and set on trestles.
  • Page 618 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 20. Service and fill the fuel system in accordance with Servicing Fuel System, Chapter 12. Open the fuel valve and check for leaks and fuel flow.
  • Page 619 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A322 A322 AN3-13A AN3-11A AN960-10 AN960-10 MS20365-1032C MS20365-1032C 63900-20 (2 REQ.) 63900-19 (2 REQ.) 2 REQ. SKETCH A SKETCH B A288 A288...
  • Page 620 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A380 AN3-11A A381 AN960-10L MS20365-1032C SKETCH E SKETCH F A313 BOLT AN23-18 NUT AN310-3 WASHER AN960-10 COTTER PIN MS24665-132 SKETCH G Figure 57-2. Aileron and Flap Installation (cont)
  • Page 621 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BALANCING TOOL (REFER TO CHAPTER 91) HOLDING FIXTURE AILERON STATIC BALANCE LIMITS (IN.-LBS.) LEADING LEADING LEVEL SUPPORT EDGE EDGE HEAVY LIGHT +1.5 -2.0...
  • Page 622 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL WING FLAP. REMOVAL OF WING FLAP. (Refer to Figure 57-2.) 1. Extend the flaps to their fullest degree and remove the bolt and bushing from the rod end bearing by use of an angle or offset screwdriver.
  • Page 623 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3C22 THROUGH 3C24 INTENTIONALLY LEFT BLANK 3C22...
  • Page 624 CHAPTER PROPELLER...
  • Page 625 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 61 - PROPELLER TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 61-10-00 PROPELLER ASSEMBLY 61-11-00 Maintenance of Propeller 8 - 82...
  • Page 626 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PROPELLER ASSEMBLY. I MAINTENANCE OF PROPELLER. REMOVAL OF PROPELLER. 1. Insure that the master and magneto switches are off. 2. Move fuel selector to off position.
  • Page 627 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL EXAGGERATED VIEW OF EXAGGERATED VIEW OF EXAGGERATED VIEW OF NICK IN LEADING EDGE SURFACE CRACK NICK IN FACE OF BLADE BEFORE CROSS-SECTION...
  • Page 628 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 61-2. Propeller Installation (Two and Three Blade Propellers) 61-11-03 Page 61-03 Revised: June 20, 1995...
  • Page 629 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL BLADE TRACK. Blade track is the ability of one blade tip to follow the other, while rotating, in almost the same plane.
  • Page 630 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 6. Adjust governor control per the following paragraph. 7. Install engine cowl. RIGGING AND ADJUSTMENT OF PROPELLER GOVERNOR. (S/n’s 44-7995001 thru 44-8195026 and 44-8107001 thru 44-8207020.) (Refer to Figure 61-3.)
  • Page 631 The propeller governor with the solenoid is a Hartzell supplied product. Contact Hartzell for replacement of coil or governor or Piper for replacement of entire assembly. Hartzell also has the D-4469 Computer Analyzer unit, which can be purchased from them, to test the computer.
  • Page 632 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 633 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 61-5. Synchrophaser System Installation (Sheet 1 of 2) 61-10-00 Page 61-8 Revised: June 20, 1995 3D10...
  • Page 634 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 61-5. Synchrophaser System Installation (Sheet 2 of 2) 61-10-00 Page 61-09 Revised: June 20, 1995 3D11...
  • Page 635 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 61-6. Pulse Generator Assembly GROUND TEST. PPS-50041C The purpose of the following procedure is to make sure all circuits and the propeller governor solenoid coil are functioning properly.
  • Page 636 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — NOTE — With the exception of the coil short light, disregarded other lights that may come on at this time .
  • Page 637 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL To check the pulse generator, disconnect the drive cables and make note of the generator shaft position. Connect this setup to the generator, and with a small screwdriver rotate the shaft. The voltmeter should peak out each time the slot in the appropriate end of the shaft, reaches the notch In the housing.
  • Page 638 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Disconnect the tachomoter cable(s). Tape cable(s) to the aircraft to prevent it/them from falling into the nacelle. 4. Remove the pulse generator from the bracket by releasing the lock tab washer and unscrewing the reliance nut.
  • Page 639 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 8. If the test set lights are NOT ON, rotate the required generator (in the opposite direction of the other) on its bracket to its exact point the light comes on. If BOTH LIGHTS ARE OFF on the test set, rotate the generators to their timing mark alignments.
  • Page 640 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PROPELLER UNFEATHERING SYSTEM. The optional propeller unfeathering system provides a means for storing air and oil pressure in an a c c u m ulator so that the propeller may be moved out of the feathered position when so desired. Refer to the Pilot’s Operating Handbook for proper operating procedures.
  • Page 641 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. GOVERNOR ASSEMBLY 2. ACCUMULATOR 3. HOSE BRACKET 4. BRACKET Figure 61-8. Propeller Unfeathering System. 61-10-00 Page 61-16 Revised: May 15, 1989...
  • Page 642 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3D19 AND 3D20 INTENTIONALLY LEFT BLANK 3D19...
  • Page 643 CHAPTER POWER PLANT 3D21...
  • Page 644 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 71 -POWER PLANT TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 71-00-00 GENERAL 3D23 71-01-00 Description 3D23 PR 6-20 71-02-00...
  • Page 645 The induction system on these engines consists of Marvel-Schebler HA-6 float type c a rburetors with dry type air filters. Also incorporated with the carburetor on the PA-44-180, s/n’s 4 4 -7995001 through 44-8195026, is a Piper installed carburetor ice detector. The magnetos are: 1.
  • Page 646 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) TROUBLE CAUSE REMEDY Failure of engine to start. Lack of fuel Fill fuel tank. Check fuel system for leaks. Clean dirty lines, strainers or fuel valves.
  • Page 647 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) (cont) TROUBLE CAUSE REMEDY Failure of engine to idle Sniffle valve stuck open, 180T Clean or replace valve.
  • Page 648 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) (cont) TROUBLE CAUSE REMEDY Failure of engine to Leak in the induction system. Tighten all connections and develop full power.
  • Page 649 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) (cont) TROUBLE CAUSE REMEDY Rough engine. (cont) Uneven compression. Check compression. Low oil pressure. Insufficient oil. Fill sump with recommended oil.
  • Page 650 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) (cont) TROUBLE CAUSE REMEDY High oil temperature. Failing or failed bearing. Examine sump for metal particles. (cont) If found, overhaul engine.
  • Page 651 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7101. TROUBLESHOOTING (ENGINE) (cont) TROUBLE CAUSE REMEDY Low fuel pressure. Restricted flow. Check and flush fuel lines. Air leakage in fuel pump Locate and correct.
  • Page 652 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF ENGINE. (Refer to Figure 71-1.) 1. Make sure all electrical switches are turned off, and the battery ground wire is disconnected at the battery.
  • Page 653 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Disconnect the oil cooler drain hose attached to the oil cooler shield. Disconnect the throttle. mixture, and alternate air door control cables from their actuating arms.
  • Page 654 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AN7-47A BOLT AN960-716 WASHER WASHER SUPPLIED MS20365-720C NUT WASHER SUPPLIED WITH KIT 2 EACH REQUIRED WITH KIT TORQUE TO J9613-40 KIT 450 - 500 IN. LBS.
  • Page 655 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AN7-45A BOLT WASHER SUPPLIED AN960-716 WASHER WASHER SUPPLIED WITH KIT MS20365-720C NUT WITH KIT 2 EACH REQUIRED J9613-40 KIT TORQUE TO (PURCHASED 450 - 500 IN.
  • Page 656 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AN7-47A BOLT AN960-11 WASHER PS10062-8-720C NUT WASHER SUPPLIED TORQUE 450-500 IN. LB. WITH KIT 2 REQUIRED J9613-40 KIT J9613-40 KIT (PURCHASED (PURCHASED...
  • Page 657 THE BYPASS VA LVE ON THE TURBOCHARGED V E RSION IS SET AT THE FA C TO RY AND SHOULD NEED NO FURTHER ADJUSTMENT CONTACT PIPER C U S TOMER SERVICE, VERO BEACH FOR ANY A D D ITIONAL INFORMATION.
  • Page 658 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL COWLING. The cowling consists of an upper and lower section and a nose section. A cowl flap is an integral part of the lower cowl.
  • Page 659 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 71-2. Engine Cowling Installation. Figure 71-3. Cowl Flap Installation 71-21-01 Page 71-15 Revised: May 15, 1989 3E13...
  • Page 660 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 6. Reconnect the control to the flap and operate the cowl flap through its full range a few times; then place the control in the closed position and visually check the flap to determine if it is flush with the engine cowl.
  • Page 661 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 71-4. PA-44-180 Inductioon System 71-61-02 Page 71-17 Revised: May 15, 1989 3E15...
  • Page 662 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4 . Remove the back of the air box and flapper valve assembly. Lubricate the shaft with lubriplate as n e cessary.
  • Page 663 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PA-44-180T INDUCTION SYSTEM. (Refer to Figure 71-6.) — CAUTION — AFTER ANY REPAIRS TO THE INLET DUCTS, BE SURE THEY ARE PROPERLY EVA C U ATED TO PREVENT INGESTION IN COMPRESSOR OR ENGINE.
  • Page 664 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 1. LATCH 2. FILTER 3. FILTER HOUSING 4. ALTENATE AIR DOOR 5. ACTUATING ARM 6. TURBOCHARGER INLET Figure 71-5. PA-44-180T Induction System...
  • Page 665 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 4. The actuating arm and alternate air door can be removed as follows: A . Make note of where and the amount of washers used, and remove the hinge bolt from the actuating arm.
  • Page 666 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GRIDS 3E20 THRU 3E24 INTENTIONALLY LEFT BLANK 3E20...
  • Page 667 CHAPTER ENGINE FUEL SYSTEM...
  • Page 668 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 73 -ENGINE FUEL SYSTEM TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 73-10-00 DISTRIBUTION 73-10-01 Carburetor Maintenance 73-10-02 Adjustment of Idle Mixture...
  • Page 669 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DISTRIBUTION. CARBURETOR MAINTENANCE. — Note — For any information on the carburetor ice detector refer to Chapter 71. In general, little attention is required between carburetor overhauls. However, it is recommended that the following items be checked during recommended inspection periods of the engine.
  • Page 670 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 7. Check the adjustment of the idle mixture and idle speed. ADJUSTMENT OF IDLE MIXTURE. (Refer to Figure 73-1.) — WARNING —...
  • Page 671 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ENGINE PRIMER INSTALLATION (Refer to Figure 73-2.) The PA-44-180 and PA-44-180T, as shown in Figure 73-2, utilize different systems. The PA-44-180 uses hand pumps, except on S/N 44-95001 and up, high pressure electric pumps for priming are utilized and the PA-44- 180T uses high pressure electric pumps for the priming system.
  • Page 672 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2286 PA-44-180 INSTALLATION 2 13 12 11 1. CHECK BALL 2. BALL SPRING 3. RETAINER SCREW 4. O-RINGS 5. CYLINDER 6. SEALING SPRING 7.
  • Page 673 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TO HEATER COMBUSTION HEATER FUEL PUMP L. FUEL R. FUEL PRESS. PRESS GAUGE GAUGE CYL’S CYL’S 1,2 &4 1,2 &4 CARBURETOR CARBURETOR...
  • Page 674 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C275 VIEW A - A NOTE 1. .06 MINIMUM CLEARANCE BETWEEN CLAMP AND ELECTRICAL SEE NOTE 1 WIRE. 2. APPLY LUBON #404 TO ALL MALE PIPE THREADS.
  • Page 675 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRIC PRIMER (PA-44-180, s/ns 4495001 and up). — NOTE — The electric fuel pumps must be on to operate the electric primers.
  • Page 676 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL PA-44-180 THROTTLE VALVE MIXTURE PA-44-180T THROTTLE THROTTLE VALVE Figure 73-5. Adjustment of Engine Controls (Sheet 1 of 2) (PA-44-180, s/n’s 44-7195001 thru 44-8195026, and PA-44-180T, s/n’s 44-8107001 and up.) 3.
  • Page 677 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A. At the carburetor, disconnect the clevis end of the mixture control cable from the control arm. Loosen the jam nut that secures the clevis end.
  • Page 678 CHART 7301. FUEL PRESSURE SENDER TEST SPECIFICATION Pressure (Psi) Resistance (Ohms) Tolerance (Ohms) — 11.5 +1, - 0 ±1 +1/2, - 0 ±1 The gauge (Piper P/N 86750-2) should indicate 8 psi +1/2. - 0 needle widths. 73-30-02 Page 73-09 Revised: May 15, 1989 3F12...
  • Page 679 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING. CHART 7302. TROUBLESHOOTING FUEL PRESSURE GAUGE Trouble Cause Remedy No fuel pressure indication. Fuel valve stuck. Check valve. No fuel in tanks.
  • Page 680 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL GRIDS 2F14 AND 2F15 INTENTIONALLY LEFT BLANK 3F14...
  • Page 681 CHAPTER IGNITION 3F16...
  • Page 682 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 74 - IGNITION TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 74-00-00 GENERAL 3F18 74-01-00 Description and Operation 3F18 8 - 82...
  • Page 683 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. DESCRIPTION AND OPERATION. The magnetos feature two electrically independent ignition circuits in one housing. A single four pole rotor provides the magnetic energy for both circuits. This magneto uses an impulse coupling to provide reliable ignition to engine cranking speed.
  • Page 684 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7401. TROUBLESHOOTING (MAGNETO) (cont.) Trouble Cause Remedy Low power and uneven Defective spark plugs. Clean and gap or replace running. spark plugs.
  • Page 685 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL After the first 50 hour period and every 100 hours thereafter, the magneto ignition system should be checked. If engine operating troubles develop which appear to be caused by the ignition system, it is advisable to check the spark plugs and wiring first before working on the magneto.
  • Page 686 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 0.422” MAX. Figure 74-1. Height of Spring in Distributor Block Tower MINOR IRREGULARITIES - NORMAL POINT IS SMOOTH WELL DEFINED MOUND SMOOTH ROLLING HILLS AND FLAT.
  • Page 687 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Check the capacitors for looseness in the magneto cover of the harness assembly and for any physical damage. Using a Bendix 11-1767-1, -2 or -3 condenser tester or equivalent, check capacitors for capacitance, series resistance and leakage.
  • Page 688 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ROTATION ROTATION RIGHT ENGINE LEFT ENGINE Figure 74-3. Engine Timing Marks GREEN BLACK BENDIX SWITCH LEAD TERMINAL KIT P/N 10-382698 Figure 74-4. Timing Light Connected to Magneto...
  • Page 689 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RETARD ANGLES 25° 20° 15° 8° “E” GAP ANGLES 8° Figure 74-5. Timing Marks on Magneto Rotor Remove the magneto drive gear backlash by turning the propeller opposite to normal rotation approximately 40°...
  • Page 690 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RED PAINTED TOOTH Figure 74-6. Painted Tooth Centered Figure 74-7. Timing Mark on Rotor in Timing Window Aligned with Pointer 11. Attach red lead from the 11-9110 timing light to the left switch adapter lead, the green timing light lead to the right switch adapter lead and the black timing light lead to the magneto housing.
  • Page 691 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 13. Rotate the entire magneto in the direction of rotor rotation until one of the timing lights just goes OFF. Then, evenly tighten the magneto mounting clamps.
  • Page 692 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — Note — The use of the timing light unit, P/N 11-9110-1 available from Bendix will simplify the internal timing procedure and breaker synchronization.
  • Page 693 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 74-8. Timing Light Connected to Magneto and Breakers 7 4 - 11 - 0 3 Page 74-11 Revised: May 15, 1989...
  • Page 694 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A561 RIGHT MAIN DATA PLATE BREAKER CONTACT (TOP OF MAGNETO) ASSEMBLY LEFT MAGNETO RIGHT MAGNETO HIGH TENSION HIGH TENSION LEFT MAIN AND...
  • Page 695 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 19. Check capacitors for looseness in the magneto cover of the harness assembly and for any physical damage. The capacitors should be checked for capacitance, series resistance and leakage. Capacitance should be 0.34 to 0.41 microfarads.
  • Page 696 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 0.015 MIN. Figure 74-10. Removing Impulse Coupling Figure 74-11. Checking Flyweight to Stop Pin Clearance 0.005 - 0.020 Figure 74-12. Stop Pin Installation Dimension...
  • Page 697 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL No. 35 DRILL FLYWEIGHT GAUGE 11-10041 Figure 74-13. Checking Flyweight Axial Figure 74-14. Checking Flyweight Radial Wear with Drill Shank Wear with Gauge —...
  • Page 698 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 74-15. Points of Coupling Body Wear ACCEPTABLE REJECT Figure 74-16. Acceptable and Deformed Coupling Springs 7 4 - 11 - 0 5...
  • Page 699 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Inspect for excess radial wear between the flyweight and axle using the 11-10041 flyweight gauge. Insert the gauge between flyweights and against cam hub as shown in Figure 7414. If the gauge cannot be inserted easily, remove burr from edges of hub keyway with a small file.
  • Page 700 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 813A Figure 74-17. Checking Impulse Coupling Figure 74-18. Orientation of Spring for Magnetization in Coupling Body Figure 74-19. Lifting Inner End of Spring...
  • Page 701 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Insert a spare rotating magnet, with woodruff key in taper, into cam assembly. Turn magnet slightly in direction of coupling rotation (to wind spring). Lift magnet with cam only enough to clear projections on the body.
  • Page 702 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A566 Figure 74-20. Checking Harness Lead Figure 74-21. Checking Harness Lead Continuity Insulation Resistance CUT NOTCH TO FIT SNUG ON NO. 58 DRILL WITH JAWS CLOSED 90°...
  • Page 703 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL To replace grommets or eyelets, pull the conductor through the shielding sufficiently to make eyelet accessible. Remove the eyelet being careful not to damage conductor wire. Replace grommet and eyelet using the “AB”...
  • Page 704 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL DRILL NO. 47 1/4 IN. DEEP TAP 3-48 BRAZE 2 1/2 IN. BLEND O.D. TO I.D. POLISH O.D. 12.000 IN. MAT: NO. 30 DRILL ROD OR EQUIVALENT Figure 74-24.
  • Page 705 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C473 1/2” COATING SCRAPED FROM BRAID BRAID TO EDGE OF KNURLING BLUE COATING Figure 74-26. Ferrule Positioned Under Braid C347 2.750 2.375 0.506...
  • Page 706 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL C473 C473A 11-8625 PLUNGER ASSEMBLY 11-3699 HANDLE 11-8626 SPRING INSERTION GUIDE DISTRIBUTOR DISTRIBUTOR BLOCK BLOCK Figure 74-28. Position of 11-8627 Kit and Figure 74-29.
  • Page 707 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Pull the lead back into the cover to wedge the braid between the tapers of the cover and ferrule. Provide a back up support for the cover and seat the ferrule using the 11-7074 Ferrule Seating Tool (refer to Figure 74-27) and a mallet.
  • Page 708 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 74-32. Removing Spark Plug Frozen to Bushing — Note — When withdrawing the ignition cable lead connection from the plug, care must be taken to pull the lead straight out and in line with the center line of the plug barrel;...
  • Page 709 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL — Note — Torque indicating handle should not be used for spark plug removal because of the greater torque requirement. Place spark plugs in a tray that will identify their position in the engine as soon as they are removed.
  • Page 710 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SWITCHING. MAGNETO AND STARTER SWITCHES. (Refer to Figure 74-33.) The magneto switches and the starter switch are located on a switch panel positioned to the left of the instrument panel.
  • Page 711 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3G22 THROUGH 3G24 INTENTIONALLY LEFT BLANK 3G22...
  • Page 712 CHAPTER ENGINE INDICATING...
  • Page 713 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 77 - ENGINE INDICATING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 77-00-00 GENERAL 77-01-00 Cluster Mounted Instruments A 8 - 82...
  • Page 714 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. The power plant instrumentation is designed to give an accurate and quick indication of the power conditions at which the engines are operating. Line routing for the instruments may be seen in Figure 77-1.
  • Page 715 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3264 1. MANIFOLD PRESSURE GAUGE 2. FUEL PRESSURE GAUGE SENDER 3. OIL PRESSURE SWITCH 4. OIL PRESSURE GAUGE SENDER 5. MANIFOLD PRESSURE LINE 6.
  • Page 716 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CLUSTER MOUNTED INSTRUMENTS. REMOVAL AND REPLACEMENT OF CLUSTER MOUNTED INSTRUMENTS. 1. Remove the face panel by springing the plastic material from the channels.
  • Page 717 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING MANIFOLD PRESSURE GAUGE. CHART 7701. MANIFOLD PRESSURE INDICATOR TROUBLE CAUSE REMEDY Excessive error at existing Pointer shifted. Replace instrument. barometric pressure.
  • Page 718 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING TACHOMETER. CHART 7702. TACHOMETER TROUBLE CAUSE REMEDY No reading on indicator, Broken drive cable. Replace cable. either permanent or inter- mittent.
  • Page 719 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRIC TACHOMETER INSTALLATION (PA-44-180T). (Refer to Figure 77-2.) The tachometer on the 44-180T is an electrical instrument which utilizes an EMI filter, and magnetic pickups on the engines.
  • Page 720 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B867 PLAN VIEW B866 CANNON PLUG CIRCUIT BREAKER II TACHOMETER B953 TOP VIEW T3L (ON L. ENGINE) MAGNETIC PICKUP T3R (ON R. ENGINE)
  • Page 721 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL B868 NOTE I N S TALL MAGNETIC PICKUP AND SET CLEARANCE AFTER PROPELLER INST A L L ATION. USE FEELER GAUGE TO ADJUST CLEARANCE BETWEEN RING GEAR AND TIP OF PICKUP TO .015 / .005 WITH CRANKSHAFT...
  • Page 722 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TEMPERATURE. CYLINDER HEAD TEMPERATURE GAUGE. The cylinder head temperature gauges are in their respective instrument clusters, located on the instrument panel. These instruments measure cylinder head temperature using a sender located in a cylinder head in each engine.
  • Page 723 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CYLINDER HEAD TEMPERATURE GAUGE CALIBRATION (PA-44-180 S/N 44-95001 and up) A calibration chart has been included for use in verifing that the suspected faulty gauge is within tolerance.
  • Page 724 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ANALYZERS. EXHAUST GAS TEMPERATURE GAUGE. This dual instrument, which is commonly referred to as EGT, is used to aid the pilot in setting the most economical fuel-air mixture for cruising flight at a power setting of 75% or less.
  • Page 725 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING EXHAUST GAS TEMPERATURE GAUGE. CHART 7704. EXHAUST GAS TEMPERATURE Trouble Cause Remedy Gauge inoperative. Master Switch OFF. Turn switch ON. Circuit Breaker OUT.
  • Page 726 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF PA-44-180 EGT PROBE. — NOTE — When installing the probe, make sure to leave a minimum of 1/2 inch slack between where the lead cable attaches to the engine and engine mount, to accommodate engine shock movement.
  • Page 727 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 77-4. EGT Probe Installation (PA-44-180T) 77-32-04 Page 77-14 Revised: May 15, 1989 3H16...
  • Page 728 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INSTALLATION OF PA-44-180T EGT PROBE. (Refer to Figure 77-4) — NOTE — When routing lead cable, leave a minimum of 1/2 inch slack between the engine and the engine mount to compensate for engine shock movement.
  • Page 729 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 3H18...
  • Page 730 CHAPTER EXHAUST 3H19...
  • Page 731 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 78 - EXHAUST TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 78-00-00 GENERAL 3H21 78-01-00 Description (PA-44-180) 3H21 78-02-00 Leak Test of Muffler (PA-44-180) 3H21 78 - Cont.
  • Page 732 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. DESCRIPTION (PA-44-180). This exhaust system is a muffler system, exhaust gases are discharged through an opening in the center of the lower cowl.
  • Page 733 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3H22 THROUGH 3H24 INTENTIONALLY LEFT BLANK 3H22...
  • Page 734 CHAPTER...
  • Page 735 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 79 - OIL TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 79-00-00 GENERAL 79-01-00 Oil Coller A 1 - 83...
  • Page 736 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. OIL COOLER. INSTALLATION OF OIL COOLER. 1. When installing fittings in the oil coolers, care should be used to prevent excessive torque being applied to the cooler.
  • Page 737 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 7901. OIL PRESSURE SENDER TEST SPECIFICATIONS Pressure (Psig) Resistance (Ohms) Tolerance(Ohms) -5, +0 — -0, +15 INSTALLATION OF OIL PRESSURE SENDERS.
  • Page 738 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TROUBLESHOOTING PRESSURE GAUGE. CHART 7902. OIL PRESSURE GAUGE Trouble Cause Remedy Excessive error at zero. Pointer loose on shaft. Repalce instrument. Overpressure or seasoning of burdon tube.
  • Page 739 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OIL PRESSURE GAUGE CALIBRATION. (cont) 3. If the gauge does not meet the tolerances set forth in the chart, it must be replaced or recalibrated.
  • Page 740 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OIL TEMPERATURE GAUGE. The oil temperature indicator is mounted in the instrument cluster or in an adjacent configuration on the instrument panel. This instrument will provide a temperature indication of the engine oil in degrees Fahrenheit.
  • Page 741 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL OIL TEMPERATURE GAUGE CALIBRATION (cont) 3. If the gauge does not meet the tolerances set forth in the chart, it must be replaced or recalibrated.
  • Page 742 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3I9 THROUGH 3I10 INTENTIONALLY LEFT BLANK...
  • Page 743 CHAPTER STARTING 3I11...
  • Page 744 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 80 - STARTING TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 80-00-00 GENERAL 3I13 80-00-01 Description of Operation 3I13 80-00-02...
  • Page 745 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. DESCRIPTION OF OPERATION. The gear reduction starting motor consists of six major components: The Commutator End Head Assembly, the Armature, the Frame and Field Assembly, the Gear Housing, the Pinion Housing, and the Bendix Drive Assembly.
  • Page 746 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8001. TROUBLESHOTTING (STARTER) (cont) Trouble Cause Remedy Starter fails to operate. (cont) Binding, worn, or improperly Brushes should be a free fit in...
  • Page 747 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8001. TROUBLESHOTTING (STARTER) (cont) Trouble Cause Remedy Starter fails to operate. (cont) Dirty commutator. If commutator is rough or dirty, smooth and polish with number 000 sandpaper.
  • Page 748 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CRANKING. MAINTENANCE OF STARTING SYSTEM. The starting system should be inspected at regular intervals, the frequency of which should be determined by the amount of service and the conditions under which the aircraft is operated.
  • Page 749 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. No lubrication is required on the starting motor except at the time of overhaul. Then lubricate the entire shaft under Bendix Drive, fill grooves in armature shaft at drive end and pack gear box with 1.3 to 2.0 ounces of Lithium Soap Base Grease 1925 Molytex “O”...
  • Page 750 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ARMATURE. 1. Check the commutator for uneven wear, excessive glazing or evidence of excessive arcing. If only slightly dirty, glazed or discolored, the commutator can be cleaned with 00 or 000 sandpaper. If the commutator is rough or worn, it should be turned in a lathe.
  • Page 751 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 80-2. Turning Motor Commutator Figure 80-3. Testing Motor Armature for Shorts 376B 376A KNIFE AMMETER VOLTMETER SWITCH CARBON PILE GROUND BATTERY...
  • Page 752 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ASSEMBLY OF STARTING MOTOR. 1. When assembling the starting motor, always use an arbor press and the proper bearing arbor for installing graphitized bronze and roller bearings.
  • Page 753 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CARBON PILE KNIFE SWITCH AMMETER VOLTMETER STARTING SPRING SCALE MOTOR BATTERY GROUND Figure 80-6. Stall Torque Hookup STARTING MOTOR SERVICE TEST SPECIFICATIONS.
  • Page 754 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3I22 THROUGH 3I24 INTENTIONALLY LEFT BLANK 3I22...
  • Page 755 CHAPTER TURBINES...
  • Page 756 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHAPTER 81 - TURBINES TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION GRID SUBJECT SUBJECT EFFECTIVITY 81-00-00 GENERAL 81-01-00 Description and Operation 81-02-00 Troubleshooting 81-03-00...
  • Page 757 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GENERAL. DESCRIPTION AND OPERATION. The turbocharger system (Figure 81-1) consists of a turbine and compressor assembly, ground adjustable exhaust bypass screw and the necessary hose and engine air intake ducts. The ground adjustable exhaust bypass screw allows some exhaust gas to bypass the turbine and flow directly overboard.
  • Page 758 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8101. TROUBLESHOOTING (TURBOCHARGER) (cont.) Trouble Cause Remedy Oil leakage. At too slow idle, turbocharger Increase idle speed. won’t turn. Turbine seal leaks oil seen as blue smoke.
  • Page 759 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8101. TROUBLESHOOTING (TURBOCHARGER) (cont.) Trouble Cause Remedy Turbocharger output low or Heavy sludge or coking in center Overhaul turbocharger as operates sluggishly (cont.) housing.
  • Page 760 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8101. TROUBLESHOOTING (TURBOCHARGER) (cont.) Trouble Cause Remedy Turbocharger seal leakage at Air cleaner element clogged. Service air cleaner. compressor end. Restriction or faulty check valve Remove restriction or replace in turbocharger oil drain line.
  • Page 761 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 8101. TROUBLESHOOTING (TURBOCHARGER) (cont.) Trouble Cause Remedy Engine will not deliver rated Foreign material lodged in Disassemble and clean. power. (cont) compressor, impeller or turbine.
  • Page 762 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TURBOCHARGER NOMENCLATURE TERM MEANING Absolute Pressure Pressure measured above a vacuum rather than above ambient pressure. Bootstrapping This is a term used in conjunction with turbo machinery. If you were to take all...
  • Page 763 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TURBOCHARGER NOMENCLATURE TERM MEANING Prelubrication Coating of all interior surfaces of the turbocharger with engine oil. Performed before storage of the turbocharger, at installation on an engine at each engine oil and filter change and after prolonged non-operation.
  • Page 764 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 2043 EXHAUST TURBINE HOUSING COMPRESSOR HOUSING TURBINE WHEEL COMPRESSOR WHEEL TAIL PIPE AIR INLET EXHAUST DISCHARGE EXHAUST INLET COMPRESSOR AIR DISCHARGE GROUND ADJUSTABLE...
  • Page 765 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3. Position the turbocharger on the engine mounting flange, secure with three bolts and torque to 360 in. lbs. Safety with .032 safety wire.
  • Page 766 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL EXHAUST TURBINE COMPRESSOR HOUSING HOUSING GROUND ADJUSTABLE EXHAUST BYPASS VALVE ABSOLUTE PRESSURE RELIEF VALVE REAR VIEW OF ENGINE SHOWING TURBOCHARGER INSTALLATION GROUND ADJUSTABLE...
  • Page 767 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL INITIAL RUN-IN PROCEDURE PRECAUTIONS. To protect the turbocharger during engine initial run-in on new or newly overhauled engines, perform the following precautions: 1.
  • Page 768 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL REMOVAL OF ABSOLUTE PRESSURE RELIEF VALVE. 1. Remove the four screws and washers which secure the relief valve to the duct. 2. Lift the relief valve assembly from the duct.
  • Page 769 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 3J15 THROUGH 3L24 INTENTIONALLY LEFT BLANK 3J15...
  • Page 770 SEMINOLE MAINTENANCE MANUAL CARD 4 OF 4 PA-44-180 SEMINOLE PA-44-180T TURBO SEMINOLE PIPER AIRCRAFT CORPORATION (PART NUMBER 761 664) June 20.1995...
  • Page 771 AIRPLANE MAINTENANCE MANUAL INTRODUCTION. This PIPER AIRCRAFT Maintenance Manual is prepared in accordance with the GAMA (General Aviation Manufacturers Association) format. This maintenance manual is divided into various Groups which enable a broad separation of contents (Chapters) within each group.
  • Page 772 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL VENDOR PUBLICATIONS. ENGINE: Overhaul Manual = TEXTRON LYCOMING - OVERHAUL MANUAL DIRECT DRIVE ENGINE - P/N 60294-7 Textron Lycoming Division Williamsport, Pa 17701 Parts Catalog = TEXTRON LYCOMING —...
  • Page 773 Engineered Fabrics Division Rockmart, Georgia 30153-0548 Rockmart, Georgia 30153 PIPER PUBLICATIONS. AUTOFLIGHT: AutoControl IIIB Service Manual = Piper P/N 761 502 AutoControl IIIC Service Manual = Piper P/N 761 602 PA-44-180/180T Parts Catalog = Piper P/N 761 663 Inspection Reports =...
  • Page 774 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS The Maintenance Manual information incorporated in this set of Aerofiche cards has been arranged in accordance with the general specifications of Aerofiche adopted by the General Aircraft Manufacturer's Association, (GAMA).
  • Page 775 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL AEROFICHE EXPLANATION AND REVISION STATUS (cont) Effectivity Publication Date Aerofiche Card Effectivity ORG791212 December 12, 1979 1, 2, and 3 PR800822 August 22, 1980...
  • Page 776 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID NO. AIRWORTHINESS 1A18 TIME LIMITS/MAINT CHECKS 1A21 DIMENSIONS AND AREAS 1B14...
  • Page 777 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GAMA SYSTEM/CHAPTER INDEX GUIDE (cont) SYST SUB-SYST AEROFICHE CHAP SECTION TITLE GRID N0. LIGHTS NAVIGATION & PITOT/STATIC 2I16 OXYGEN VACUUM ELECTRICAL/ELECTRONIC PANELS AND...
  • Page 778 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS FIGURE NO. SUBJECT GRID NO. 6-1. Three View 1B19 6-2. Station References 1B20 6-3. Access Plates and Panels 1B22 7-1.
  • Page 779 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 21-19. Exploded View - Combustion Air Blower and Motor Assembly 21-20. Suggested Setup of Heater Operation Test 1G10 21-21.
  • Page 780 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 27-2. Control Cable Inspection Technique 27-3. Cable Wear Pattern 27-4. Internal Cable Wear 27-5.
  • Page 781 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 29-8. End Gland Locking Device (Main Gear) 2C20 29-9. Hydraulic Lines Installation 2C23 30-1.
  • Page 782 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE NO. SUBJECT GRID NO. 32-23. Adjustment of Main Gear Down Limit Switch 2H23 32-24. Adjustment of Nose Gear Down Limit Switch 2H23 32-25.
  • Page 783 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 61-2. Propeller Installation 61-3. Propeller Governor 61-4. Adjustment of Propeller Control 61-5. Synchrophaser System Installation 61-6.
  • Page 784 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF ILLUSTRATIONS (cont) FIGURE N0. SUBJECT GRID NO. 74-19. Lifting Inner End of Spring 3G11 74-20. Checking Harness Leads Continuity 3G13 74-21.
  • Page 785 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS CHART NO. SUBJECT GRID NO. Leading Particulars and Principal Dimensions 1B16 1201 Thread Lubricants 2001 Maximum Distance Between Supports for Fluid Tubing...
  • Page 786 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL LIST OF CHARTS (cont) CHART NO. SUBJECT GRID NO. 7101 Troubleshooting (Engine) 3D24 7301 Fuel Pressure Sender Test Specifications 3F12 7302 Troubleshooting (Fuel Pressure Gauge)

  • Page 787: Wiring Diagrams

    CHAPTER CHARTS WIRING DIAGRAMS 4A18...
  • Page 788 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHAPTER 91 -CHARTS AND WIRING DIAGRAMS TABLE OF CONTENTS/EFFECTIVITY CHAPTER SECTION SUBJECT GRID NO. EFFECTIVITY 91-00-00 GENERAL 4A20 91-01-00 Torque Requirements 4A20 91-01-01 General Requirements 4A20 91-01-00 Decimal Conversions 4A23 91-03-00 Decimal Millimeter Equivalents of...
  • Page 789 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL TORQUE REQUIREMENTS. The torque values given in Chart 9102 are derived from oil-free cadmium-plated threads and are recommended for all airframe installation procedures where torqueing is required, unless otherwise noted in sections where other values are stipulated.
  • Page 790 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9102. RECOMMENDED NUT TORQUES TO R Q U E S : The importance of correct application can not be overemphasized. CHART B Undertorque can result in unnecessary wear of nuts and bolts as well as the parts they are holding together.
  • Page 791 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9102. RECOMMENDED NUT TORQUES (cont.) FINE THREAD SERIES BOLTS BOLTS BOLTS Steel Tension Steel Tension Aluminum AN 3 THRU AN 20...
  • Page 792 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9103. DECIAMAL CONVERSIONS 9 1 - 0 2 - 0 0 Page 91-04 Revised: May 15, 1989 4A23...
  • Page 793 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9104. DECIMAL / MILLIMETER EQUIVALENTS OF DRILL SIZES Decimal/Millimeter Equivalents of Drill Sizes From 1/2” to No. 80 Size Decimal Millimeter...
  • Page 794 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL The following list of materials were used in making the balancer: 9.375 1 ea. Base 12 x 11 0.190 2024 T3 clad aluminum alloy 2 ea.
  • Page 795 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9105. LIST OF CONSUMABLE MATERIALS MATERIAL SPECIFICATION PRODUCT VENDOR Fuel, Engine 100 octane green / blue (See Note l) Oil, Engine...
  • Page 796 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9105. LIST OF CONSUMABLE MATERIALS MATERIAL SPECIFICATION PRODUCT VENDOR Lubricating Grease Aeroshell No. 22 Shell Oil Co. (High Temperature) One Shell Plaza...
  • Page 797 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHART 9105. LIST OF CONSUMABLE MATERIALS MATERIAL SPECIFICATION PRODUCT VENDOR Solvent PD680 Toluol TT-T-548 Buffing and Rubbing A u t o m o t i v e T y p e Dupont Company Compounds...
  • Page 798 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9105. LIST OF CONSUMABLE MATERIALS MATERIAL SPECIFICATION PRODUCT VENDOR Black Vinyl Plastic 2 in. x 9 mil. and or Norton Tape Division 11/7 in.
  • Page 799 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9105. LIST OF CONSUMABLE MATERIALS MATERIAL SPECIFICATION PRODUCT VENDOR Rain Repellent FSCM 50159 Repcon Unelko Corporation 727 E. IlOth Street Chicago, Illinois 60628...
  • Page 800 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9106. METRIC CONVERSION TABLES 1. These charts contain the various conversion data that may be useful when figuring capacities, lengths, temperatures. and various weights and measures from the English system values to the metric system values or back again.
  • Page 801 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9106. METRIC CONVERSION TABLES (cont) CENTIGRADE — FAHRENHEIT CONVERSION TABLE Example: To convert 20°C, to Fahrenheit, find 20 in the center column headed (°F—°C);...
  • Page 802 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9106. METRIC CONVERSION TABLES (cont) INCHES TO MILLIMETER INCHES 0.0000 0.0001 0.0002 0.0003 0.0004 0.0005 0.0006 0.0007 0.0008 0.0009 MILLIMETER 0.000 0.0025...
  • Page 803 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9106. METRIC CONVERSION TABLES (cont) MULTIPLY TO OBTAIN MULTIPLY TO OBTAIN CENTIMETERS 0.3937 KILOGRAMS 2.205 0.03281 35.27 1000 GRAMS CU. CENTIMETERS 0.001...
  • Page 804 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SPECIAL TOOLS. A399 B599 3 LB. MOVABLE WEIGHT WITH MARKED CENTERLINE NUTS AND/OR WASHERS ADDED AS REQUIRED TO BALANCE TO O L 90°...
  • Page 805 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 3.85 .062 R .062 R .125 .625 .062 R .250 .062 R 3.10 .750 Figure 91-3. Fabricated Aileron Bellcrank Rigging Tool 9 1 - 1 2 - 0 0...
  • Page 806 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL A115 MATERIAL: NOTES .750 X 31.50 X 4.00 ALUM. BAR OR 1. DRILL AND TAP TO 10-32 NF. AN-3 BOLT, JAM NUT AND .750 X 31.50 X .750 SQ.
  • Page 807 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL SURFACE PARALLEL TO BASE LINE MATERIAL: 1.0 X 23.19 X 3.82 ALUM. BAR STABILATOR CONTOUR 1.10 1.60 .803 1.12 1.39 .25 SET BACK 1.29...
  • Page 808 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRICAL SCHEMATICS. CHART 9107. ELECTRICAL WIRE CODING CIRCUIT FUNCTION LETTER WIRE NUMBER WIRE SEGMENT LETTER WIRE GAUGE CIRCUIT FUNTION CIRCUITS LETTER AUTOPILOT...
  • Page 809 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9108. ELECTRIC SYMBOLS (Old Style) (Sheet 1 of 3) 91-22'-00 Page 91-21 Revised: June 20, 1995 4B16...
  • Page 810 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHART 9108. ELECTRIC SYMBOLS (New Style) (Sheet 2 of 3) AIRCRAFT LOCATION SYMBOLS BATTERIES ADJUSTABILITY GENERAL GENERAL MULTICELL FUSELAGE STATION WATER LINE BUTT LINE CABLES AND CONDUCTORS SHIELDED SHIELDED TWO COAXIAL SHIELDED TWISTED SINGLE...
  • Page 811 PIPER AIRCRAFT PA-44-180/180T AIRPLANE MAINTENANCE MANUAL CHART 9108. ELECTRIC SYMBOLS (New Style) (Sheet 3 of 3) MOMENTARY OR PUSH BUTTON CONTACT SWITCH ASSEMBLIES SPRING RETURN BASIC (MAKE) (BREAK) CLOSED OPEN TRANSFER CIRCUIT CIRCUIT CONTACT CONTACT CIRCUIT CLOSING OPENING LOCKING AND NON-LOCKING...
  • Page 812 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9109. ELECTRICAL SYSTEM COMPONENT LOAD (Sheet 1 of 2) DUTY 1 CYCLE 2 EQUIPMENT CKT.- (AMPS) OPT. BKR. ALTERNATOR FIELD (2) 5.0 EA...
  • Page 813 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CHART 9109. ELECTRICAL SYSTEM COMPONENT LOAD (Sheet 2 of 2) DUTY 1 CYCLE 2 EQUIPMENT CKT.-BKR. (AMPS) OPT. ANTI-COLLISION LIGHT (WING TIP STROBES) AUTOPILOT —...
  • Page 814 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRICAL SCHEMATIC INDEX FIGURE N0. SCHEMATIC GRID N0. ANNUNCIATOR 91-7. PA-44-180 Annunciator Panel S/n’s 44-7995001 thru 44-8195026) 91-8. PA-44-180T Annunciator Panel (S/n’s 44-8107001 thru 44-8207026) 91-9 PA-44-180 Annunciator Panel (S/n’s 4495001 and up)
  • Page 815 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRICAL SCHEMATIC INDEX (cont.) FIGURE N0. SCHEMATIC GRID N0. ENGINE SYSTEMS (cont.) 91-34. PA-44-180T Electric Tachometer Installation 4C24 91-35. Electric Tachometer (PA-44-180, s/n’s 4495001 and up) 91-36.
  • Page 816 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL ELECTRICAL SCHEMATIC INDEX (cont.) FIGURE N0. SCHEMATIC GRID N0. LANDING GEAR (cont.) 91-58. Hydraulic Pump (PA-44-180, s/n’s 4495001 and up) 4D18 91-59.
  • Page 817 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4B24...
  • Page 818 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-7. PA-44-180 Annuciator Panel (S/n’s 44-7995001 thru 44-8195026) 91-23-00 Page 91-30 Revised: June 20, 1995...
  • Page 819 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-8. PA-44-180T Annuciator Panel (S/n’s 44-8107001 thru 44-8207026) 91-23-00 Page 91-31 Revised: June 20, 1995...
  • Page 821 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 822 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-10. Pitot Heat (PA-44-180, s/n’s 4495001 and up) Figure 91-11. Pitot Heat (PA-44-180 (S//n’s Figure 91 -12. Windshield Heat 44 -7995001 thru 44-8195026 and PA-44-180T)
  • Page 823 ANNUNCIATOR ASSYEMBLY ANNUN. ASSY. PITOT HEAT INOP CONN. PITOT 117B HEAD H3H20 + 14 VDC H3D16 TO PTT GND 100W J110 P310 H3G20 H2D16 H3C16 F302 H3E20 J110 P310 H2C16 7 309 F301 H3F20 PITOT 341 P H2A16 H2B16 HEAT H3B16 H3A16 TO SWITCH...
  • Page 824 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-14. Propeller Deice (2 and 3 Bladed Propellers) 91-23-00 Page 91-36 Revised: June 20, 1995...
  • Page 825 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-15. Surface Deice Figure 91-16. Heated Lift Detector 91-23-00 Page 91-37 Revised: June 20, 1995...
  • Page 826 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 827 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL CIGAR LIGHTER (OPTIONAL) SEE OPT. CLOCK INST. SEE OPT. HOUR METER INST. Figure 91-18. Alternator and Starter (PA-44-180, s/n’s 44-7795001 thru 44-8095027, and PA-44-180T, s/n’s 44-8107001 thru 44-8107066)
  • Page 828 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-19. Alternator (PA-44-180, s/n’s 44-8195001 thru 44-8195026, and PA-44-180T, s/n’s 44-8207001 and up) 91-23-00 Page 91-40 Revised: June 20, 1995 4C11...
  • Page 829 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-20. Starters (PA-44-180, s/n’s 44-8195001 thru 44-8195026, and PA-44-180T, s/n’s 44-8207001 and up) 91-23-00 Page 91-41 Revised: June 20, 1995 4C12...
  • Page 831 RIGHT LEFT ALTERNATOR ALTERNATOR J417P J402 P302 P302 J402 J416P S303 S302 P3CR P3BR P3AR P3AL P3BL P3CL P8JP P8AR P8BR P8BL P8CL RIGHT P7CL LEFT P7AR P7BR P7BL VOLT. VOLT. REG. REG. ANNUNCIATOR ANNUNCIATOR MAIN BUS J405 P105 P208 J408 P6AL P6AR TO LOW...
  • Page 833 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-24. Aviaonics Bus Power (Early PA-44-180/180T Models) Figure 91-25. PA-44-180T Avionics Bus Power (S/n’s 44-8207001 and up) 91-23-00 Page 91-45 Revised: June 20, 1995...
  • Page 834 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-26. Optional Avionics Master Switch THIS SPACE INTENTIONALLY LEFT BLANK 91-23-00 Page 91-46 Revised: June 20, 1995 4C17...
  • Page 835 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4C18...
  • Page 836 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4C19...
  • Page 837 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-30. PA44-180 Engine Gauges (S/n’s 44-7995001 to 44-8095027) 91-23-00 Page 91-49 Revised: June 20, 1995 4C20...
  • Page 838 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-31. Engine Gauges (PA-44-180, s/n’s 44-8185001 thru 44-819 5026 and PA-44-180T, s/n’s 44-8107001 thru 44-8207020) 91-23-00 Page 91-50 Revised: June 20, 1995...
  • Page 841 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-34. PA-44 -180T Electric Tachometer Installation 91-23-00 Page 91-53 Revised: June 20, 1995 4C24...
  • Page 843 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL 91-36. Left and Right Engine Magnetos Figure 91-37. Primer Solenoids Figure 91-38. Fuel Pumps (PA-44-180, s/n’s 44-7995001 thru 44-8195026, and PA-44-180T’s 91-23-00...
  • Page 846 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 847 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 848 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-43. Air Conditioning System ( PA-44-180, s/n’s 44- 8195001 thru 44-8195026. and PA - 4 4 - 1 8 0 T. s/n’s 44-8107001 and up)
  • Page 851 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-46. Optional Blower Moter (PA-44-180T) Figure 91-47. Vent Blower (PA-44-180, s/n’s 4495001 and up) 91-23-00 Page 91-63 Revised: June 20, 1995...
  • Page 852 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D11...
  • Page 853 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D12...
  • Page 854 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-50. Panel Mounted Clock Figure 91-51. Control Wheel Mounted Clock NOTE USED ON PA-44-180, S/N’S 44-8095001 THRU 44-8195026,and PA-44-180T, S/N’S 44-8107001 AND UP Fig 91-52.
  • Page 855 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-53. Optional Turn Coordinator ( PA-44-180, s/n’s 44-8095001 thru 44-8195026. and PA - 4 4 - 1 8 0 T. s/n’s 44-8107001 and up) Figure 91-54.
  • Page 856 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D15...
  • Page 857 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D16...
  • Page 858 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-57. Hydraulic Pump and Landing Gear Control and Warning ( PA-44-180, s/n’s 44-7995001 thru 44-8195026, and PA - 4 4 - 1 8 0 T, s/n’s 44-8107001 and up)
  • Page 860 (POSITION LIGHT SWITCH SHOWN IN OFF POSITION; GEAR POSITION LIGHTS NOT DIMMED)
  • Page 861 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D20...
  • Page 862 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4D21...
  • Page 863 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RESERVED Fig 91-62. Anti-C0llision Lights Fig 91-63 Reserved Figure 91-64. Strobe Lights (PA-44-180, s/n’s 4495001 and up) 91-23-00 Page 91-75 Revised: June 20, 1995...
  • Page 864 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-65. Position Lights (PA-44-180, s/n’s 44-7995001 thru 44-8195026. and PA-44-180T. s/n’s 44-8107001 and up) Figure 91-66. Position Lights (PA-44-180, s/n’s 4495001 and up)
  • Page 865 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL RESERVED Figure 91-67. Landing Light (PA-44-180, s/n’ Figure 91-68. Reserved 44-7995001 thru 44-8095027, & PA-44-180T s/n’s 44-8107001 thru 44-8107026) Figure 91-69. PA-44-180 Dual Landing Lights (Sheet 1 of 2) (S/n’s 44-8195001 thru 44-8195026)
  • Page 866 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-69. PA-44-180T, Dual Landing Lights (Sheet 2 of 2) (S/n’s 44-8107027 and up) Figure 91-70. Landing Lights (PA-44-180, s/n’s 4495001 and up)
  • Page 867 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-71. Wing (Ice) Inspection Light (PA-44-180T, s/n’s 44- 8107033 and up) THIS SPACE INTENTIONALLY LEFT BLANK 91-23-00 Page 91-79 Revised: June 20, 1995...
  • Page 869 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 870 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 871 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-76. Flood Lights Figure 91-77. Flood Lights PA-44-180, s/n’s 44-7995001 thru 44-8095006 PA-44-180, s/n’s 44-8095007 thru 44-8195026, & PA-44-180T, s/n’s 8107001 and up Figure 91-78.
  • Page 872 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-79. Avionics and Instrument Lights (PA-44-180, s/n’s 44-7995001 thru 44-8195026. and PA-44-180T. s/n’s 44-8107001 and up) 91-23-00 Page 91-84 Revised: June 20, 1995...
  • Page 874 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 875 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4E10...
  • Page 876 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-83. Propeller Synchrophaser System 91-23-00 Page 91-88 Revised: June 20, 1995 4E11...
  • Page 877 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL THIS PAGE INTENTIONALLY LEFT BLANK 4E12...
  • Page 879 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL Figure 91-86. Stall Warning (PA-44-180, s/n’s 44-7995001 thru 44-8195026. and PA-44-180T. s/n’s 44-8107001 and up) THIS SPACE INTENTIONALLY LEFT BLANK 91-23-00 Page 91-91...
  • Page 881 PIPER AIRCRAFT PA - 4 4 - 1 8 0 / 1 8 0 T AIRPLANE MAINTENANCE MANUAL GRIDS 4E16 THROUGH 4L24 INTENTIONALLY LEFT BLANK 4E16...

This manual is also suitable for:

Pa-44-180t turbo seminole

Table of Contents

Save PDF