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AZTEC PA-23-250
User Manuals: Piper AZTEC PA-23-250 Ground Equipment
Manuals and User Guides for Piper AZTEC PA-23-250 Ground Equipment. We have
1
Piper AZTEC PA-23-250 Ground Equipment manual available for free PDF download: Service Manual
Piper AZTEC PA-23-250 Service Manual (1411 pages)
Brand:
Piper
| Category:
Tools
| Size: 52.66 MB
Table of Contents
Introduction
3
Section Index Guide
3
Table of Contents
5
List of Illustrations
5
S/N's 27-8054001 and up
7
List of Tables
18
Table of Contents
21
Airworthiness Limitations
23
Inspections
23
Life Limited Parts Marking and Disposition
23
Limitations
23
Handling and Servicing
26
Weighing
26
1B5
29
Dimensions
29
Station Reference Lines
29
Three-View of PA-23-250 and PA-23-235 . . . . . . . . . . . . . . . . . . . . . 2-2. Three-View of PA-23-250 (Six Place)
30
Three-View of PA-23-250 (Six Place)
33
Leading Particulars and Principle Dimensions
37
Consumable Materials
45
Access Playes and Panels
51
Access Plates and Panels PA-23-250 (Six Place)
53
1C8
54
Access and Inspection Provisions
54
Serial Number Plate
54
Tools and Test Equipment
54
Torque Requirements
54
Weight and Balance
54
Torque Wrench Formula
55
1C9
55
Flare Fitting Torques
56
Recommended Nut Torques (Inch-Pounds)
57
Station Reference Lines
59
Conversion Tables
61
1C21
67
Ground Handling
67
Jacking Arrangements
67
Reserved
67
Weighing
68
Lateral Leveling
69
Longitudinal Leveling
69
Mooring
70
Parking
70
1D1
71
External Power Receptacle
71
Operation of External Power Receptacle
71
Taxiing
71
Towing
71
1D2
72
Cleaning Engine Compartment
72
Cleaning Landing Gear
72
1D3
73
Cleaning Exterior Surfaces
73
Cleaning Headliner, Side Panels and Seats
73
Cleaning Windshield and Windows
73
1D4
74
Cleaning Carpets
74
Coating Procedure for New Aluminum Panel - Non-Alodized
74
Repainting (Polyurethane Enamel)
74
Scratch Touch-Up on Aluminum Surface
74
1D5
75
Epoxy Primer
75
Mixing Instructions for Primers and Topcoats
75
Polytane 6351 Primer
75
Wash Primer
75
1D6
76
Mixing Instructions for Polytane Enamel
76
Paint Materials
76
Cherrylock Rivets, Removal
77
Standard Practices - Airframe
77
Cherrylock Rivet Removal
78
1D9
79
Flareless - Tube Assemblies
79
Identification of Fluid Lines
79
Hose Line Markings
80
Flareless Tube Fittings
81
1D12
82
Maximum Distance between Supports for Fluid Tubing
82
Support Clamps
82
Hydraulic System
83
Introduction to Servicing
83
Servicing Hydraulic System
83
Filling Powerpak Reservoir (Gravity)
84
Powerpak Reservoir
84
Service Points. PA-23-250 and PA-23-235
85
Service Points, PA-23-250 (Six Place)
86
Filling Powerpak Reservoir (Pressure)
88
Landing Gear System
88
Servicing Landing Gear
88
Oleo Struts
89
Servicing Landing Gear Oleo Struts
89
Adding Fluid to Struts
90
Filling Oleo Struts
90
Brake System
91
Filling Brake Cylinder Reservoir
91
Inflating Oleo Struts
91
Servicing Brake System
91
Induction Air Filter
92
Power Plant
92
Removal and Installation of Air Filter
92
Service Instructions
93
Chamber Pressure Requirements
94
Servicing Propeller
94
Draining Fuel System
95
Draining Moisture from Fuel System
95
Filling Fuel Cells
95
Servicing Fuel System
95
Oxygen System Safety Precautions
96
Filling Oxygen Cylinder
97
Indicated Oxygen Cylinder Pressures Vs. Ambient Temperature
97
Draining Oil Sump
98
Lubrication
98
Oil System (Engine)
98
Servicing Oil System
98
Filling Oil Sump
99
Oil Filter, Full Flow
99
Oil Suction Screen
99
Recommendations for Changing Oil
100
Application of Grease
101
Application of Oil
101
Lubrication Instructions
101
Lubrication Chart
102
Recommended Lubricating Oils
102
Thread Lubricants
103
Lubrication Chart, PA-23-250 and PA-23-235
106
Parts Nomenclature
107
Type of Lubricants
108
Lubrication Chart, PA-23-250 (Six Place)
113
Structure
119
Table of Contents
119
1F17
123
Description
123
Introduction
123
Removal of Wing Tip
123
Wing Group
123
Wing Tip
123
1F18
124
Installation of Aileron
124
Installation of Wing Tip
124
Removal of Aileron
124
Aileron and Flap Installation
125
1F21
127
Flap Bellcrank / Flap Horn Replacement
127
Installation of Flap
127
Removal of Flap
127
1F22
128
Flap Bellcrank Replacement
128
Flap Bellcrank Installation
129
Flap Horn Installation
129
Flap Torque Tube Replacement
129
Stabilator Trim / Flap Interconnect Pulley Installation
129
1F24
130
Fuselage Cradle
130
Removal of Wing
130
1G1
131
Installation of Wing
131
Wing Installation
135
Positioning of Front Spar Aligning Tool
137
Positioning of Main Spar Aligning Tool
137
1G8
138
Empennage Group
138
Removal of Stabilator
138
1G9
139
Installation of New Stabilator
139
Installation of Stabilator
139
Installation of Stabilator Trim Tab
140
Removal of Rudder
140
Removal of Stabilator Trim Tab
140
Rudder
140
Stabilator Trim Tab Free Play
140
1G11
141
Installation of Rudder
141
Removal of Rudder Trim Tab
141
Rudder Trim Tab
141
1G12
142
Installation of Rudder Trim Tab
142
Removal of Vertical Stabilizer (Fin)
142
Empennage Installation
143
Fuselage Assembly
145
Installation of Vertical Stabilizer (Fin)
145
Removal of Windshield
145
Windshield Installation
146
Installation of Windshield
149
Removal of Side Windows (PA-23-250 [Six Place], S/N's 27-2505 and Up)
149
Installation of Side Windows
150
Removal of Side Windows
150
1G21
151
Removal of Emergency Exit Assembly
151
Installation of Emergency Exit Assembly
152
Installation of Emergency Exit Window
152
Removal of Emergency Exit Window
152
Emergency Exit Window Installation
153
Baggage Doors
154
Installation of Aft Baggage Door
154
Removal of Aft Baggage Door
154
Installation of Aft Baggage Door Latch
155
Removal of Aft Baggage Door Latch Assembly
155
Installation of Baggage Door Latch (PA-23-250[Six Place])
156
Installation of Forward Baggage Door (PA-23-250 [Six Place])
156
Removal of Forward Baggage Door Latch (PA-23-250 [Six Place])
156
Cabin Entrance Door
157
Installation of Cabin Entrance
157
Removal of Cabin Entrance Door
157
Cabin Entrance Door Latch Assembly
158
Cabin Door Latch and Lock Assembly
159
Removal of Cabin Door Latch and Lock Assembly
159
Installation of Cabin Door Latch and Lock Assembly
160
Typical Access Plates and Panels
163
Balancing Stabilators
164
Checking Stabilator Balance
165
Balancing Stabilators with Deicer Boots Installed
166
Stabilator Balance Weight - Rework
166
Checking Rudder Balance
167
Balancing Aileron
169
1H16
170
Fiberglass Touch-Up and Surface Repairs
170
Fireglass Repairs
170
Fiberglass Fracture and Patch Repairs
171
Fuselage Frame Tubing
172
Skin Materials and Thicknesses
174
Replacement of Damaged Nose Cone (PA-23-250, PA-23-235)
181
Replacement/Installation of Nose Cone or Radome
182
Nose Cone/ Radome
183
1I8
186
Installation of Nose Cone/Radome
187
List of Materials (Thermoplastic)
188
Surface Scratches, Abrasions or Ground-In-Dirt
189
Deep Scratches, Shallow Nicks and Small Holes
190
Mixing of Epoxy Patching Compound
190
Repairing of Cracks
191
Welding Repair Method
191
Various Repairs
192
Repair of Impacted Damage
194
Repair of Stress Lines
194
Product Listing for Liquid Safety Walk Compound
195
Safety Walk Repairs
195
Surface Preparation
195
Application of Pressure Sensitive Safety Walk
196
Shoulder Harness Inertia Reel Adjustment
196
Surface Controls
197
Control Surface Travel and Cable Tension
201
Control Column Assembly
204
Removal of Control Column Assembly Components
204
Installation of Control Column Assembly Components
206
Control Column Installation
207
Aileron Controls
208
Removal of Aileron Control Cables
208
Correct Method of Installing Rod End Bearings
210
Installation of Aileron Control Cables
213
Removal of Aileron Bellcrank Assembly
214
Installation of Aileron Bellcrank Assembly
215
Rigging and Adjustment of Aileron Controls
215
Installation of Aileron Bellcrank Rigging Tool
217
Aileron Trim
218
Removal of Stabilator Control Cables
218
Stabilator Controls
218
Installation of Stabilator Control Cable
220
Stabilator and Stabilator Trim Controls
221
Stabilator Trim and Flap Interconnect (Serial Nos. 27-7654001 and Up)
225
Leveling Stabilator
228
Removal of Forward Stabilator Trim Assembly
229
Stabilator Trim
229
Installation of Forward Stabilator Trim Assembly
230
Installation of Aft Stabilator Trim Assembly
231
Removal of Aft Stabilator Trim Assembly
231
Rigging and Adjustment of Stabilator Trim
232
Removal of the Stabilator Trim Indicator Wire
233
S/N's 27-2505 Thru
233
Rudder and Rudder Trim Controls
237
Installation of Rudder Control Cables
239
Removal of Rudder Control Cables
239
Rigging and Adjustment of Rudder Control
240
Removal of Forward Rudder Trim Assembly
241
Installation of Forward Rudder Trim Assembly
242
Removal of Aft Rudder Trim Assembly
243
Installation of Aft Rudder Trim Assembly
244
Rigging and Adjustment of Rudder Trim
244
Installation of Rudder Trim Indicator Wire
245
Removal of Rudder Trim Indicator Wire
245
Removal of Rudder Trim Indicator Wires
246
Adjustment of Rudder Trim Indicator Wire
247
Trim Drum
248
Trim Screw Assembly
248
Wrapping Trim Drum
248
Installation of Flap Actuator Assembly
249
Removal of Flap Actuator Assembly
249
Wing Flap Controls
249
Flap Control Installation
250
Rigging and Adjustment of Flaps
251
Flap Rigging
252
Installation of Flap Position Sender
253
Removal of Flap Position Sender
253
Rigging and Adjustment of Flap Position Sender
253
Stabilator Trim and Flap Interconnect System
254
Adjustment of Stabilator Trim and Flap Interconnect System
255
Control System Friction Limits
255
Friction in the Rudder Control System
255
Friction in the Stabilator Control System
255
Adjustment of Stabilator Tab Position Indicator
256
Friction in the Aileron Control System
256
Troubleshooting - Surface Controls
257
Fabricated Tool. Aileron Rigging
265
Aerofiche Revision Status
272
Leading Particulars, Hydraulic System
287
Leading Particulars, Powerpak Assembly
288
Hydraulic Test Units
301
Connecting Hydraulic Test Unit
302
Disconnecting Hydraulic Test Unit
302
Hydraulic Test Unit (Optional)
302
Cycling Landing Gear
303
Flushing Hydraulic System
304
Hydraulic System Operation Checks
304
Pre-Check and General Instructions
304
Checking Engine-Driven Hydraulic Pump Operation
306
Checking Powerpak Main Relief Valve
306
Checking Selector Lever Release to Neutral
312
Checking Hydraulic System for Internal Leaks
313
Internal Leakage Checks
313
Checking Powerpak for Internal Leaks
314
Checking Components for Internal Leaks
317
Checking Landing Gear Actuating Cylinders for Internal Leaks
320
Checking Flap Actuating Cylinder for Internal Leaks
321
Checking Priority Valve for Internal Leaks
321
Checking Timer Check Valve (Sequence Valve) for Internal Leaks
321
Engine-Driven Hydraulic Pump(S)
322
Procedure after Engine-Driven Pump Failure
322
Removal of Engine-Driven Pump
322
Disassembly of Engine-Driven Pump
323
Cleaning, Inspection, Repair of Engine Driven Pump
324
Inspection and Repair, Engine-Driven Hydraulic Pump
325
Hydraulic Pump, Exploded View
326
Assembly of Engine-Driven Pump
327
Hydraulic System Failure
328
Installation of Engine Driven Pump(S)
328
Priming Engine Driven Pump
328
Hydraulic Powerpak
329
Identification of Powerpaks
329
Removal of Powerpak
329
Installation of Powerpak
331
Overhaul Instructions and Precautions
332
Overhaul of Powerpak
332
Location of Powerpak Components
335
Hydraulic Powerpak, Exploded View
336
Special Tools and Test Equipment
338
Disassembly of Powerpak
339
Removal of Reservoir, Baffle and Plates
339
Removal and Disassembly of Main Relief Valve
340
Removal and Disassembly of Thermal Relief Valves
341
Removal of Camshaft Release Detent Assemblies
341
Removal of Poppets and Selector Camshafts
342
Assembly and Installation of Hand Pump
346
Assembly of Powerpak
346
Installation of Poppets and Selector Camshafts
347
Installation of Camshaft Release Detent Assemblies
349
Assembly and Installation of Main Relief Valve
350
Assembly and Installation of Thermal Relief Valves
350
Check and Adjustment Instructions and Precautions
352
Installation of Reservoir, Baffle and Plates
352
Powerpak Bench Checks and Adjustments
352
Checking and Adjusting Powerpak
353
Checking Powerpak Operation
353
Check and Adjustment of Main Relief Valve
354
Powerpak Bleeding Procedure
354
Check and Adjustment of Camshaft Release Detent Assemblies
355
Check and Adjustment of Thermal Relief Valves
355
Check of Poppets for Leakage
357
Check of Hand Pump
359
Final Check of Powerpak
359
Testing Reservoir for Leakage
361
Removal of Check Valve
362
System Check Valve
362
Installation of Check Valve
363
Removal of Anti-Retraction Valve
363
Testing Check Valve
363
Cleaning, Inspection and Repair of Anti-Retraction Valve
364
Disassembly of Anti-Retraction Valve
364
Anti-Retraction Valve
365
Assembly of Anti-Retraction Valve
366
Installation of Anti-Retraction Valve
366
Testing Anti-Retraction Valve
366
Adjustment of Anti-Retraction Valve
367
Cleaning, Inspection and Overhaul of Shuttle Valve
368
Removal of Shuttle Valves
368
Shuttle Valve
369
Installation of Shuttle Valves
370
Testing Shuttle Valve
370
Actuating Cylinders
371
Gear and Flap Actuating Cylinders
371
Removal of Nose Gear Actuating Cylinder
371
Visual Checks of Actuating Cylinders
371
Disassembly of Gear and Flap Actuating Cylinders
372
Removal of Flap Actuating Cylinder.
372
Removal of Main Gear Actuating Cylinders.
372
Nose and Main Landing Gear Actuating Cylinder
373
Flap Actuating Cylinder
374
Assembly of Gear and Flap Actuating Cylinders
375
Cleaning. Inspection and Repair of Gear and Flap Actuating Cylinder
375
Installation of Nose and Main Gear Actuating Cylinders
375
Installation of Flap Actuating Cylinder
376
Disassembly of Main Gear Door Actuating Cylinders
377
Gear Door Actuating Cylinders
377
Removal of Nose and Main Gear Door Actuating Cylinders
377
Nose Gear Door Actuating Cylinder (451 844 and 451 934)
378
Main Gear Door Actuating Cylinder (451 845)
379
Assembly of Main Gear Door Actuating Cylinder
380
Assembly of Nose Gear Door Actuating Cylinder
380
Disassembly of Timer Check Valve.
381
Removal of Timer Check Valve
381
Timer Check Valve
382
Assembly of Timer Check Valve
383
Cleaning, Inspection and Repair of Timer Check Valve
383
Installation of Timer Check Valve
383
Testing Timer Check Valve
383
Assembly of Priority Valve
384
Cleaning. Inspection and Repair of Priority Valve
384
Disassembly of Priority Valve
384
Removal of Priority Valve
384
Priority Valve
385
Installation of Priority Valve
386
Testing and Adjustment of Priority Valve
386
Hydraulic Filter
387
Removal and Installation of Hydraulic Filter
387
Removal and Installation of Hydraulic Lines
387
Replacement of Filter Element
387
Description of Emergency Gear Extension System
388
Resetting Emergency Gear Extender
388
Bypass Flow Valve
389
Bypass Flow Valve Test
389
Emergency Gear Extender Cable Rigging
389
Resetting Priority Valve
389
Bypass Flow Valve Adjustment
391
Hydraulic System Troubleshooting
392
Powerpak Parts List
398
Powerpak Service Limits
404
Fabricated Work and Test Stand
406
Fabricated Hook
407
Fabricated Hook, Double
407
Landing Gear and Brake System
412
Disassembly of Nose Gear Oleo
418
Nose Landing Gear System
418
Nose Gear Oleo Strut Assembly
420
Assembly of Nose Gear Oleo
421
Cleaning, Inspection and Repair of Nose Gear Oleo
421
Cleaning, Inspection and Repair of Nose Landing Gear
423
Removal of Nose Landing Gear
423
Nose Landing Gear Installation
424
Installation of Nose Landing Gear
425
Adjustment of Nose Gear Drag Link and Latch Assembly
426
Adjustment of Nose Landing Gear
426
Alignment of Nose Landing Gear
427
Clamping Rudder Pedals in Neutral
428
Rudder Pedals Neutral Angle
428
Aligning the Nose Gear
430
Cleaning, Inspection and Repair of Nose Gear Door Assembly
431
Nose Gear Door Assembly
431
Removal of Nose Gear Door Assembly
431
Adjustment of Nose Landing Gear Doors
432
Installation of Nose Gear Door Assembly
433
Disassembly of Main Gear Oleo
435
Main Gear Assembly
435
Main Gear Oleo Strut Assembly
437
Assembly of Main Gear Oleo
438
Cleaning, Inspection and Repair of Main Gear Oleo
438
Removal of Main Landing Gear
439
Cleaning, Inspection and Repair of Main Landing Gear
440
Main Landing Gear Installation (Left)
441
Installation of Main Landing Gear
442
Adjustment of Main Gear Drag Link and Latch Assembly
443
Adjustment of Main Landing Gear
443
Alignment of Main Landing Gear Wheel.
444
Aligning Main Gear
445
Cleaning, Inspection and Repair of Main Gear Door Assembly
446
Installation of Main Gear Door and Actuator Assembly
446
Main Gear Door Assembly
446
Removal of Main Gear Door and Actuator Assembly
446
Adjustment of Main Gear Doors
447
Mechanical Main Gear Door Mechanism
447
Hydraulic Main Gear Door Mechanism
449
Adjustment of Main Landing Gear Doors
450
Adjustment of Nose Gear up Limit Switch
452
Adjustment of Main Gear up Limit Switch
453
Adjustment of Landing Gear down Limit Switches
454
Installation of Gear Warning Switches
455
Landing Gear Warning System
455
Removal of Gear Warning Switches
455
Adjusting Gear Warning Switches
456
Removal and Disassembly of Nose Wheel
457
Assembly and Installation of Nose Wheel
458
Inspection of Nose Wheel Assembly
458
Removal and Disassembly of Main Wheel
459
Inspection of Main Wheel Assembly
460
Brake Installation
461
Repair of Main Wheel Assembly
461
Assembly and Installation of Main Wheel
462
Bearing Cup Replacement
462
Brake Adjustment and Lining Tolerances
463
Brake System
463
Cleaning. Inspection and Repair of Wheel Brake Assembly
463
Removal and Disassembly of Wheel Brake Assembly
463
Wheel Brake Assembly
463
Removal and Installation of Anchor Bolts
467
Assembly and Installation of Wheel Brake Assembly
468
Brake Master Cylinder
468
Cleaning, Inspection and Repair of Brake Master Cylinder
469
Disassembly of Brake Master Cylinder
469
Assembly of Brake Master Cylinder
470
Installation of Brake Master Cylinder
470
Brake Master Cylinder Assembly
471
Cleaning, Inspection and Repair of Parking Brake Valve
472
Disassembly of Parking Brake Valve
472
Parking Brake Valve
472
Assembly of Parking Brake Valve
473
Bleeding Procedure
473
Installation of Parking Brake Valve
473
Bleeding Brakes
474
Construction of Tire Balancer
475
Tire Balancing
475
Nose Gear Oleo Service Tolerances
476
Landing Gear Oleo Service Tolerances
477
Main Gear Oleo Service Tolerances
479
Landing Gear and Brake System Troubleshooting
482
Fabricated Tool, Checking Nose Wheel Alignment
485
Rigging and Adjusting Engine Cowl Flaps
506
Propeller Installation
507
Removal of Propeller
507
Cleaning, Inspection and Repair of Propeller
508
Typical Nicks and Removal Method
509
Propeller Specifications
510
Blade Track
518
Installation of Propeller Governor
518
Propeller Governor
518
Removal of Propeller Governor
518
Rigging and Adjustment of Propeller Governor.
519
Removal of Engine
521
Engine Installation
523
Installation of Engine
526
Engine Installation, PA-23-250 (Six Place)
530
Carburetor Maintenance
533
Adjustment of Throttle and Mixture Controls.
534
Installation of Carburetor
534
Removal of Carburetor
534
Adjustment of Idle Mixture
535
Adjustment of Engine Idling Speed
536
Fuel Injector
536
Fuel Injector Maintenance
536
Schematic of RSA Fuel Injection System
537
Lubrication of Fuel Injector
538
Preparation for Storage
538
Removal of Fuel Injector, Nozzle Lines, Fuel Lines/Fuel Flow Divider
538
Installation of Fuel Injector
539
Adjustment of Idle Speed and Mixture
540
Adjustment of Throttle and Mixture Controls
540
Cleaning and Inspection of Fuel Air Bleed Nozzle
542
Fuel Air Bleed Nozzle
542
Installation of Fuel Air Bleed Nozzles
542
Magneto Inspection
543
Contact Spring Inspection
544
Impulse Coupling
544
Removal of Magneto
545
Timing Procedure
546
Magneto Timing Marks
547
Timing Pointer
547
Breaker Compartment with Cast Timing Marks
549
Timing Kit Installed
549
Engine Timing Marks
551
Harness Assembly
551
Inspection of Harness
551
Removal of Harness
551
Installation of Harness
552
Removal of Spark Plugs
552
Ignition System Schematic
553
Inspection and Cleaning of Spark Plug
554
Removing Spark Plug Frozen to Bushing
554
Installation of Spark Plugs
555
Starting Vibrator Checking Procedure
555
Installation of Starting Vibrator
556
Removal of Starting Vibrator
556
Adjustment of Oil Pressure Relief Valve
557
Installation of Oil Cooler
557
Inspection and Adjustment of Ball Joint Exhaust System
558
Adjustment of Ball Joint Exhaust System
560
Engine Troubleshooting
562
Power Plant (Turbocharged)
576
Installation of Cowl Flap Control Cable
584
Removal of Cowl Flap Control Cable
584
Installation of Cowl Flap Assembly
585
Engine Shock Mounts
599
Replacing Engine Shock Mounts
599
Cleaning or Replacing Turbo Oil Filter Element
641
Lockwiring V-Band Coupling
641
V-Band Coupling 100 Hour Inspection
641
Engine Troubleshooting (Fuel Injection)
642
Power Plant (Lycoming Turbocharged)
658
Grid no
689
Fuel System
690
Fuel System Diagram (2 Valves)
691
Fuel System Diagram
692
Fuel Cells
698
Removal of Fuel Cells
698
Cleaning, Inspection and Repair of Fuel Cells
699
Removal of Wing Tip Fuel Cell
699
Wing Tip Fuel Cell Installation
701
Fuel Cell Compartment
702
Resealing Inboard Fuel Cell Wing Cavity Area
702
Fuel Cell Installation and Vent System
703
Installation of Fuel Cell
705
Molded Nipple Fittings
705
Installation of Wing Tip Fuel Cell
706
Handling and Storage of Fuel Cells
707
Repair of Fuel Cell
707
Testing Fuel Cells
709
Checking Fuel Quantity Indicating System
710
Fuel Quantity Indicating System
710
Fuel Indicating System Wiring Schematic
711
Checking Fuel Quantity Sender
712
Checking Fuelgauges Schematic
712
Gauge Check
713
Removal and Installation of Wing Tip Fuel Sight Gauge
713
Removal of Fuel Sender
713
Disassembly of Fuel Selector Valve
714
Installation of Fuel Sender
714
Removal of Fuel Selector Valve
714
Assembly of Fuel Selector Valve
715
Cleaning. Inspection and Repair of Fuel Selector Valve
715
Leak Test of Fuel Selector Valve
715
Fuel Selector Valve Installation
716
Installation of Fuel Selector Valve
716
Adjustments for Fuel Shut-Off Valve Controls
717
Fuel Selector Valve
717
Cleaning, Inspection and Repair of Fuel Selector Valve
718
Assembly of Fuel Valve
719
Leak Test of Selector Valve
719
Fuel Selector Valve Installation (Scott)
720
Adjustment and Lubrication of Fuel Selector Valve
721
Inspection and Leak Test of Fuel Selector Valve
722
Assembly of Fuel Crossfeed Valve
730
Leak Test of Crossfeed Valve
730
Fuel Filter
731
Installation of Fuel Crossfeed Valve
731
Removal of Fuel Filter
731
Disassembly of Fuel Filter Assembly
732
Disassembly, Inspection and Assembly of Fuel Filter
732
Assembly of Fuel Filter.
733
Cleaning. Inspection and Repair of Fuel Filter
733
Electric Fuel Pumps
734
Installation of Fuel Filter Assembly
734
Plunger Fuel Pumps (Bendix)
734
Removal of Fuel Pump
734
Assembly of Fuel Pump
736
Cleaning, Inspection and Repair of Fuel Pump
736
Resistance Check (Plunger Type Pump)
736
Bendix Electric Fuel Pumps (Early and Late)
737
Adjustment of Electric Fuel Pump (Bench Test)
738
Adjustment of Electric Fuel Pump (in Airplane)
738
Installation of Fuel Pump
738
Disassembly of Fuel Pump
739
Removal of Fuel Pumps
739
Weldon Rotary Fuel Pump
740
Shaft Seal Installation
742
Fuel System Troubleshooting
748
Fuel System Pressures
751
Fuel Selector Valve Control Cables
752
Electrical Symbols
761
Instrument Markings - PA-23-250 (Six Place)
761
Instrument Troubleshooting
761
Summary of Alternator Checks
761
Instruments
762
Pitot-Static Instruments
774
Vacuum-Gyro Instruments
774
Electrical Instrument
775
Miscellaneous Instruments
776
Removal of Instruments
776
Adjustment of Vacuum Regulator and Relief Valves
780
Gyro Vacuum System
782
Installation of Vacuum Test Selector Valve
788
Manifold Pressure Gauge Filters
788
Removal of Vacuum Test Selector Valve
788
Vacuum Test Selector Valve.
788
Exhaust Gas Temperature Gauge
789
Installation of Egt Probe and Gauge
789
Removal of Egt Probe and Gauge
789
Instrument Markings
790
Troubleshooting - Instruments
792
Electrical System
801
Index - Electrical System Schematics
805
Description of Generator Paralleling System
811
Description of Generator System
811
Generator Wiring System Schematic
812
Checking Generator System
813
Adjustments, Tests and Maintenance of Generator System
814
Low Battery and High Charging Rate
814
Inspection of Generator
815
Sectional View of Generator
816
Shunt Generator Output
816
Checking Defective Generators
817
No Output
817
Wiring Circuit
818
Excessive Output
819
Unsteady or Low Output
819
Noisy Generator
820
Armature Service
821
Field Coil Service
821
Generator Service Test Specifications
822
Polarizing Generator.
822
Cutout Relay
823
Description of Regulator
823
Current/Voltage Regulator
824
Voltage Regulator
824
Current Regulator
825
Resistances
825
Regulator Polarity
826
Temperature Compensation
826
Maintenance Instructions
827
Regulator Maintenance
827
Cleaning Contact Points
828
Adjusting Voltage Regulator Setting
830
Cutout Relay Air Gap Check and Adjustments
832
Cutout Relay Point Opening Check and Adjustment
832
Adjustment of Cutout Relay Closing Voltage
833
Checking Cutout Relay Closing Voltage
833
Checking Current Regulator, Jumper Lead Method
834
Checking Current Regulator, Load Method
834
High Points on Regulator Performance and Checks
835
Radio By-Pass Condensers
835
Regulator Armature Replacement
835
Regulator Service Test Specifications
836
Air Gap
837
Paralleling Relay
837
Point Opening
837
Relay Checks and Adjustments
837
Relay Service Test Specifications
838
Alternator System
839
Checking Alternator System
839
Description of Alternator
839
Alternator System Wiring Schematic (Delco-Remy)
841
Cross-Sectional View of Alternator
842
Checking Rotor
843
Checking Stator
844
Slip Ring End Frame
844
Checking Diodes
845
Bearing Replacement and Lubrication
846
Diode Replacement
846
Slip Ring Servicing
846
Brush Holder Assembly
847
Brush Replacement
847
Exploded View of Heat Sink Assembly
848
Heat Sink Replacement
848
Alternator Output Check
849
Alternator Service Test Specifications
850
Summary of Alternator Checks
851
Checking Regulator Circuit
852
Checking Relay
854
Relay Tests
855
Exploded View of Alternator
856
Alternator Blast Tube Routing
857
Alternator Service Inspection
857
Overhaul of Alternator
857
Alternator System Wiring Schematic (Prestolite)
858
Removal of Rectifier
859
Removal of Slip Ring End Bearing
859
Removal of Drive End Head
860
Removal of End Head Bearing
860
Testing Rotor for Grounds
861
Testing Rotor for Shorts
861
Assembly of Alternator
862
Installation of Bearing
862
Installation of Rectifier
862
Slip Ring End Bearing Assembly
863
Terminal Assembly
863
Testing of Alternator.
864
Alternator Nomenclature
865
Brush Installation
865
Checking Alternator Paralleling System
867
Description of Alternator Paralleling System
867
Operation of Regulator (Prestolite)
871
Operation of Regulator (Lamar)
872
Regulator Diagram (Lamar)
873
Regulator Diagram (Prestolite)
873
Balancing Circuit Operation
874
Testing Regulator (Prestolite)
875
Testing Regulator (Lamar)
876
Adjusting Regulator (Prestolite)
877
Application of Over-Voltage Control
880
Testing Over-Voltage Control
880
Overvoltage Relay Operational Check
881
Checking Generator or Alternator Belt Tension
882
Checking Starting Motor
885
Operation of Starting Motor
885
No-Load Test Hookup
886
Lock-Torque Test Hookup
887
Resistance Test Hookup
887
Component Inspection and Repair
889
Starting Motor Service Test Specifications
890
Exploded View of Gear Reduction Starting Motor
891
Testing Motor Armature for Shorts
894
Turning Starting Motor Commutator
894
Bendix Drive
895
Brush Holders
895
Field Coils
895
Gear and Pinion Housing
895
Bench Tests
896
No-Load Test Hook-Up
896
Stall-Torque Hook-Up
896
Starting Motor Control Circuit
897
Charging Battery
899
Installation of Battery
899
Removal of Battery
899
Servicing the Battery
899
Battery Box Corrosion Prevention
900
Checking Electrical Switches and Circuit Breakers
900
Hydrometer Reading and Battery Charge Percent
900
Installation of Landing Light
901
Removal of Landing Light
901
Installation of Lamp in Anti-Collision Wing Tip Strobe Light
903
Removal of Lamp in Anti-Collision Strobe Light
903
Removal of Lamp in Anti-Collision Wing Tip Strobe Light
903
Electrical System Troubleshooting
907
Electrical System Troubleshooting
913
Lamp Replacement Guide
918
Circuit Load Chart
920
Electrical Wire Coding
927
Electrical Symbols
928
Fuel Pumps Schematic
929
Pitot Heat Schematic
939
Navigation and Instrument Lights Schematic
940
Post Lights Schematic
947
Rotating Beacon (14-Volt and 28-Volt)
949
Anti-Collision Light (Red)
950
Stall Warning Schematic (14-Volt and 28-Volt)
951
Stall Warning Schematic
952
Turn and Bank Schematic
954
Accessory and Autopilot Schematic
955
Heated Windshield Schematic
955
External Power Supply
956
External Power Supply. PA-23-250 (Six Place)
957
Generator System Schematic (Delco-Remy, 14-Volt and 28-Volt)
958
Interior Lights Schematic, PA-23-250 (Six Place)
973
Red Anti-Collision Strobe Light (Optional)
984
White Anti-Collision Strobe Light
989
Landing and Taxi Lights
995
Heater Troubleshooting (Janitrol) 14 Volt
1018
Heater Troubleshooting (Janitrol) 28 Volt
1018
Heater Troubleshooting (South Wind)
1018
Pneumatic Deicer Operating Pressures
1018
Pneumatic Deicer System Troubleshooting
1018
Description
1020
Emergency Locator Transmitter
1020
Introduction
1020
Removal and Installation (Garrett Mfg. Ltd. 2 Year Magnesium Battery)
1020
Two Year, Magnesium Battery Connection (Garrett)
1021
Removal and Installation (Communications Components Corp. Alkaline Battery)
1024
Inadvertent Activation
1029
Piper A.f.C.s. Equipment
1030
Emergency Locater Transmitter Schematic (Garrett)
1031
Radio Shelf Capacities
1031
Emergency Locator Transmitter Schematic
1032
Emergency Locator Transmitter Schematic (Narco)
1033
ELT Portable Folding Antenna (Narco)
1034
ELT Using Fixed Aircraft Antenna (Narco)
1034
Avionic Antenna Locations
1035
General
1039
Heating and Ventilating
1039
S/N's 27-2000 Thru 27-2504
1039
Heating and Ventilating System
1044
Heater Operational Instructions
1052
Heater Safety Limit Switch
1052
Inspection of Heater and Heater Components
1052
Flow System (South Wind Heater)
1054
Fuel Safety Valve (Cutaway View)
1055
Lockout Overheat Switch
1056
Overheat Switch
1056
Thermal Fuse
1056
Cycling Switch
1057
Fuel Control Valve
1057
Systems
1057
Combustion Air System
1058
Wiring, Models 940-D and 940-DA
1059
Wiring, Models 940-DB and 940-K
1059
Electrical System.
1060
Flame Detector Switch
1060
Igniter
1060
Ventilating Air System
1060
Removal of Heater
1066
Heater Terminal Block Wiring
1067
Heater Terminal Block Wiring Test
1067
Installation of Heater
1067
Heater Installation (PA-23-235 and PA-23-250)
1068
Heater Installation
1070
Ventilating Air Blower
1082
Combustion Air Blower
1085
Cycling Overheat Switch
1085
Standpipe and Preheater Resistor
1085
Combustion Air Motor
1086
Heat Exchanger
1086
Fuel Flow Test Set up
1097
Fuel Flow Chart
1098
Overheat Switch Test
1098
Burn Test
1099
Cycling Switch Test
1100
Description of Heater and Basic Components
1109
Spark-Spray Ignition
1109
100 Hour Inspection
1110
Duct Switch
1110
Fuel Regulator and Shutoff Valve
1110
Installation of Janitrol Heater
1114
Electrical Continuity Check
1115
Heater Electrical System Checks
1115
Vent Blower Power Circuit Check
1116
Starting Power Circuit
1117
Spark Plug Gap Adjustment
1120
Vibrator Assembly
1121
Ignition Assembly
1122
Cycling Switch and Limit (Overheat) Switch
1123
Spark Plug Fixture
1124
Wiring - Test Setup
1124
Combustion Air Pressure Switch
1125
Inspection of Heater Fuel Valve
1146
Removal of Heater Fuel Valve
1146
Replacement of Fuel Filter Element
1146
Heater Operation
1148
Installation of Heater Fuel Valve
1148
Janitrol Heater. Pa-23-250E
1148
Heater Assembly and Combustion Air Blower
1149
Maintenance
1196
Testing for Leaks
1196
Removal of Oxygen Cylinder and Regulator
1202
Installation of Oxygen Cylinder and Regulator
1203
Removal of Oxygen Cylinder Recharge Valve
1204
Installation of Oxygen Cylinder Recharge Valve
1205
Installation of Pressure Gauge
1205
Removal of Pressure Gauge
1205
Cleaning of Face Masks
1206
Installation of Outlets
1206
Purging Oxygen System
1206
Removal of Outlets
1206
Description and Principles of Operation
1207
Propeller De-Icer System
1207
Fifty-Hour Inspection
1212
Inspection
1212
One-Hundred Hour Inspection
1214
Troubleshooting
1217
Timer Test
1218
Using Ammeter
1218
Brush Block Resistance Check
1219
De-Icer Resistance Check
1219
Propeller Deicer System Troubleshooting
1221
Electrical
1227
Overall Procedures
1227
Switch, Circuit Breaker. Ammeter, Timer, Harness
1228
Brushes
1231
Blade De-Icers
1236
Eccentric Running
1236
Cementing Procedure
1237
Blade De-Lcer Surface, Outboard of Clamp
1238
Clamp Sponge Cushion
1240
Pneumatic De-Lcer System
1243
Electrical Test
1248
System Checkout
1248
Component Maintenance and Replacement
1249
Inspection (Preflight)
1313
Engine Controls Bracket Inspection
1315
Inspection (Post Flight)
1319
Outboard Flap Hinge Inspection
1359
S/N's 27-3050, 27-3154 Thru 27-7405330
1359
Stabilator Tip Tube and Weight Assembly
1363
Landing Gear Selector Lever
1367
Inspection (100 Hours)
1368
Stabilator Lower Surface Rivets and Rib Attachment
1369
Flap Bellcrank Inspection
1371
Fuselage Frame Inspection
1373
Elongation Limits
1376
Inspection (500 Hours and Pressure Test)
1377
Control Cable Inspection
1378
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