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Komatsu WB140-2N Shop Manual
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Komatsu WB140-2N Shop Manual

Komatsu WB140-2N Shop Manual

Backhoe loader
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WB140-
WB150-
BACKHOE LOADER
SERIAL NUMBERS
This material is proprietary to Komatsu Utility Division and is not to be reproduced, used, or disclosed except in accordance
with written authorization from Komatsu Utility Division.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or
add improvements at any time without incurring any obligation to install such changes on products sold previously.
Due to this continuous program of research and development, periodic revisions may be made to this publication. It is recom-
mended that customers contact their distributor for information on the latest revision.
May 2003
Published in USA
WB140-2N, WB150-2N
WB140-2N
WB150-2N
2N
2N
A20001
A60001
Copyright 2003 Komatsu
Komatsu America Corp.
CEBM009802
and UP
00-1
c

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Summary of Contents for Komatsu WB140-2N

  • Page 1 WB150-2N A60001 This material is proprietary to Komatsu Utility Division and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu Utility Division. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or add improvements at any time without incurring any obligation to install such changes on products sold previously.
  • Page 2 OTHER ..............90-1 00-2 WB140-2N, WB150-2N Find manuals at https://best-manuals.com...
  • Page 3 PARTS BOOK - PAPER: Chassis and Engine (WB140-2N)....... BEPB020801 Chassis and Engine (WB150-2N)....... BEPB021300 OPERATION AND MAINTENANCE MANUAL: Chassis and Engine .
  • Page 4 REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS COMPLETE FORM DataKom Publishing Division AND RETURN TO 440 North Fairway Drive Vernon Hills, IL 60061-8112 U.S.A. Attn: Service Publications Fax No. (847) 970-4186 Tel No. (847) 970-5887 COMPANY NAME PURCHASE ORDER NO. SHIP TO ATTN.
  • Page 5 10-28 10-57 10-86 00-18 10-29 10-58 10-87 10-30 10-59 10-88 10-1 10-31 10-60 10-89 10-2 10-32 10-61 10-90 10-3 10-33 10-62 10-91 10-4 10-34 10-63 10-92 10-5 10-35 10-64 10-93 10-6 WB140-2N, WB150-2N 00-2-1 WB140-2N, WB150-2N Find manuals at https://best-manuals.com...
  • Page 6 20-79 30-24 20-14 20-47 20-80 30-25 20-15 20-48 20-81 30-26 20-16 20-49 20-82 30-27 20-17 20-50 20-83 30-28 20-18 20-51 20-84 30-29 20-19 20-52 20-85 30-30 20-20 20-53 20-86 30-31 20-21 20-54 30-32 00-2-2 WB140-2N, WB150-2N Find manuals at https://best-manuals.com...
  • Page 7 30-156 30-58 30-91 30-124 30-157 30-59 30-92 30-125 30-158 30-60 30-93 30-126 30-159 30-61 30-94 30-127 30-160 30-62 30-95 30-128 30-161 30-63 30-96 30-129 30-162 30-64 30-97 30-130 30-163 30-65 30-98 30-131 30-164 WB140-2N, WB150-2N 00-2-3 Find manuals at https://best-manuals.com...
  • Page 8 FOREWORD Mark Page Mark Page Mark Page Mark Page 30-165 30-166 30-167 30-168 30-169 30-170 30-171 30-172 30-173 30-174 30-175 30-176 30-177 30-178 90-1 90-2 90-3 90-4 90-5 90-6 90-7 90-8 90-9 90-10 00-2-4 WB140-2N, WB150-2N Find manuals at https://best-manuals.com...
  • Page 9 PARTS BOOK - PAPER: Chassis and Engine (WB140-2N)....... BEPB020801 Chassis and Engine (WB150-2N)....... BEPB021300 OPERATION AND MAINTENANCE MANUAL: Chassis and Engine .
  • Page 10 REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS COMPLETE FORM DataKom Publishing Division AND RETURN TO 440 North Fairway Drive Vernon Hills, IL 60061-8112 U.S.A. Attn: Service Publications Fax No. (847) 970-4186 Tel No. (847) 970-5887 COMPANY NAME PURCHASE ORDER NO. SHIP TO ATTN.

  • Page 11: Safety Notice

    Smoke Before starting work, remove the leads from the battery. only in the areas provided for smoking. Never smoke ALWAYS remove the lead from the negative (-) termi- while working. nal first. WB140-2N, WB150-2N 00-3...
  • Page 12 13. When measuring hydraulic pressure, check that the measuring tool is correctly assembled before taking any measure- ments. 14. Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates suddenly, so never let anyone stand at either end of the track. 00-4 WB140-2N, WB150-2N...
  • Page 13 This section gives the judgement standards when inspecting disassembled parts. NOTICE The specifications contained in this shop manual are subject to change at any time and without any advance notice. Contact your distributor for the latest information. WB140-2N, WB150-2N 00-5...
  • Page 14 (-) and numbered after the page number. File as in the example. Example: 10-4 10-4-1 Added pages 10-4-2 10-5 REVISED EDITION MARK When a manual is revised, an edition mark (123…) is recorded on the bottom outside corner of the pages. REVISIONS 00-6 WB140-2N, WB150-2N...

  • Page 15: Hoisting Instructions

    Sling wire ropes from the middle portion of the hook. Slinging near the edge of the hook may cause the rope to slip off the hook during hoisting, and a serious accident WB140-2N, WB150-2N 00-7...

  • Page 16: Coating Materials

    Used as sealant for flange surfaces and bolts Gasket seal- at high temperature locations; used to pre- LG-3 790-129-9070 1 kg vent seizure. Used as sealant for heat resistant gasket for at high temperature locations such as engine pre-combustion chamber, exhaust pipe. 00-8 WB140-2N, WB150-2N...
  • Page 17 Used for normal temperature, light load SYG2-400CA-A G2-CA Various Various bearing at places in contact with water or SYG2-160CA Grease steam. SYG2- 160CNCA 400 g (10 per SYG2-400M Belows type Used for places with heavy load. case) 00-9 WB140-2N, WB150-2N...

  • Page 18: Standard Tightening Torque

    280 ±30 3280 ±340 335 ±35 Thread diameter of bolt Width across flats 7.85 ± 1.95 0.8 ± 0.2 18.6 ± 4.9 1.9 ± 0.5 40.2 ± 5.9 4.1 ± 0.6 82.35 ± 7.85 8.4 ± 0.8 00-10 WB140-2N, WB150-2N...
  • Page 19 Width across flat Tightening torque 24.5 ±4.9 2.5 ±0.5 49 ±19.6 5 ±2 78.5 ±19.6 8 ±2 137.3 ±29.4 14 ±3 176.5 ±29.4 18 ±3 196.1 ±49 20 ±5 245.2 ±49 25 ±5 294.2 ±49 30 ±5 00-11 WB140-2N, WB150-2N...
  • Page 20 White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue 00-12 WB140-2N, WB150-2N...

  • Page 21: Conversion Tables

    2.480 2.520 2.559 2.598 2.638 2.677 2.717 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898 00-13 WB140-2N, WB150-2N...
  • Page 22 138.89 141.10 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-14 WB140-2N, WB150-2N...
  • Page 23 13.858 14.078 14.298 14.518 14.738 14.958 15.178 15.398 15.618 15.838 16.058 16.278 16.498 16.718 16.938 17.158 17.378 17.598 17.818 18.037 18.257 18.477 18.697 18.917 19.137 19.357 19.577 19.797 20.017 20.237 20.457 20.677 20.897 21.117 21.337 21.557 21.777 00-15 WB140-2N, WB150-2N...
  • Page 24 1179.0 1186.2 1193.4 1200.7 1207.9 1215.1 1222.4 1129.6 1236.8 1244.1 1251.3 1258.5 1265.8 1273.0 1280.1 1287.5 1294.7 1301.9 1309.2 1316.4 1323.6 1330.9 1338.1 1345.3 1352.63 1359.8 1367.0 1374.3 1381.5 1388.7 1396.0 1403.2 1410.4 1417.7 1424.9 1432.1 1439.4 00-16 WB140-2N, WB150-2N...
  • Page 25 3030 3044 3058 3072 3086 3101 3115 3129 3143 3158 3172 3186 3200 3214 3229 3243 3257 3271 3286 3300 3314 3328 3343 3357 3371 3385 3399 3414 3428 3442 3456 3470 3485 3499 3513 3527 3542 00-17 WB140-2N, WB150-2N...
  • Page 26 65.6 302.0 -14.4 42.8 105.8 24.4 168.8 68.3 311.0 -13.9 44.6 107.6 25.0 170.6 71.1 320.0 -13.3 46.4 109.4 25.6 172.4 73.9 329.0 -12.8 48.2 111.2 26.1 174.2 76.7 338.0 -12.2 50.0 113.0 26.7 176.0 79.4 347.0 00-18 WB140-2N, WB150-2N...
  • Page 27 SHOVEL CONTROL VALVE ..10-55 SOLENOID VALVE BLOCK ST1 - 2 SPOOL ..... . 10-55 DIFFERENTIAL LOCKING - WB140-2N, WB150-2N 10-1...
  • Page 28 BACKHOE WORKING EQUIPMENT 10-101 AIR CONDITIONING UNIT ..10-103 FUNCTION ....10-104 10-2 WB140-2N, WB150-2N...

  • Page 29: Power Train

    The driving power is transmitted from the transmission flanges (3) to the front (5) and rear (6) axles through the drive shafts (7 and 8). The driving power transmitted to the front (5) and rear (6) axles is reduced by the differentials and then transmitted to the planetary gear through the differential shafts. WB140-2N, WB150-2N 10-3...
  • Page 30 1.544 26.367 4th gear 0.662 9.472 0.827 14.123 1. Engine 5. Front axle 9. Rear wheels 2. Convertor 6. Rear axle 10. Front wheels 3. Transmission 7. Front drive shaft 4. Hydraulic pump 8. Rear drive shaft 10-4 WB140-2N, WB150-2N...
  • Page 31 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

This manual is also suitable for:

Wb150-2nA20001A60001