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Komatsu WB140PS-2N Shop Manual
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Komatsu WB140PS-2N Shop Manual

Komatsu WB140PS-2N Shop Manual

Backhoe loader
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Manual
WB140PS
WB150PS
BACKHOE LOADER
SERIAL NUMBERS
ENGINE
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in
accordance with written authorization from Komatsu America Corp.
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 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, revisions may be made to this publication. It is
recommended that customers contact their distributor for information on the latest revision.
March 2010
WB140PS-2N
WB150PS-2N
S4D106-1
Copyright 2010 Komatsu
Printed in U.S.A.
Komatsu America Corp.
CEBM012801
-2N
-2N
A40034
and up
A70010
and up

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Summary of Contents for Komatsu WB140PS-2N

  • Page 1 S4D106-1 ENGINE This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. 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 improvements at any time without incurring any obligation to install such changes on products sold previously.

  • Page 2: Table Of Contents

    OTHER ..............90-1 00-2 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...
  • Page 3 10-41 10-69 00-15 10-14 10-42 10-70 00-16 10-15 10-43 10-71 00-17 10-16 10-44 10-72 00-18 10-17 10-45 10-73 00-19 10-18 10-46 10-74 00-20 10-19 10-47 10-75 00-21 10-20 10-48 10-76 00-22 WB140PS-2N WB150PS-2N 00-2-1 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...
  • Page 4 10-103 20-31 20-64 30-6 ❍ 10-104 20-32 20-65 30-7 ❍ 20-33 20-66 30-8 ❍ 20-1 20-34 20-67 30-9 ❍ 20-2 20-35 20-68 30-10 ❍ 20-3 20-36 20-69 30-11 ❍ 20-4 20-37 20-70 30-12 00-2-2 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...
  • Page 5 30-140 ❍ ❍ ❍ ❍ 30-42 30-75 30-108 30-141 ❍ ❍ ❍ ❍ 30-43 30-76 30-109 30-142 ❍ ❍ ❍ ❍ 30-44 30-77 30-110 30-143 ❍ ❍ ❍ ❍ 30-45 30-78 30-111 30-144 WB140PS-2N WB150PS-2N 00-2-3 Find manuals at https://best-manuals.com...
  • Page 6 30-272 ❍ ❍ ❍ ❍ 30-174 30-207 30-240 30-273 ❍ ❍ ❍ ❍ 30-175 30-208 30-241 30-274 ❍ ❍ ❍ ❍ 30-176 30-209 30-242 30-275 ❍ ❍ ❍ ❍ 30-177 30-210 30-243 30-276 00-2-4 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...
  • Page 7 90-75 ❍ ❍ ❍ ❍ 30-306 90-10 90-43 90-76 ❍ ❍ ❍ ❍ 30-307 90-11 90-44 90-77 ❍ ❍ ❍ ❍ 30-308 90-12 90-45 90-78 ❍ ❍ ❍ ❍ 30-309 90-13 90-46 90-79 WB140PS-2N WB150PS-2N 00-2-5 Find manuals at https://best-manuals.com...
  • Page 8 FOREWORD Mark Page ❍ 90-80 ❍ 90-81 ❍ 90-82 00-2-6 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...
  • Page 9 Clean part with appropriate solvents. lock all the control levers and hang warning signs on Be sure to assemble all parts again in their original them. places. Replace any damaged part with new parts. WB140PS-2N WB150PS-2N 00-3 Find manuals at https://best-manuals.com...
  • Page 10 14. When jump starting the machine, only use a machine of similar size and voltage. Never use a arc welder or other electrical generating equipment to jump start the machine. Carefully review the safety and procedures for jump starting the machine. 00-4 WB140PS-2N WB150PS-2N Find manuals at https://best-manuals.com...

  • Page 11: General

    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. WB140PS-2N WB150PS-2N 00-5...
  • Page 12 When a manual is revised, an edition mark (bcd…) is recorded on the bottom outside corner of the pages. REVISIONS Revised pages are shown at the LIST OF REVISED PAGES between the title page and SAFETY page. SYMBOLS 00-6 WB140PS-2N WB150PS-2N...
  • Page 13 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 WB140PS-2N WB150PS-2N 00-7...
  • Page 14 After inserting the hose in the mating adapter, pull it back to check its connecting condition. When the hose is pulled back, the rubber cap portion moves toward the hose about 3.5 mm. This does not indicate an abnormality. 00-8 WB140PS-2N WB150PS-2N...
  • Page 15 (2) to disconnect it. CONNECTION Hold the mouthpiece of the tightening portion and push body (2) in straight until sliding prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. WB140PS-2N WB150PS-2N 00-9...
  • Page 16 (2) to disconnect it. CONNECTION Hold the mouthpiece of the tightening portion and push the body (2) in straight until the slide prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. 00-10 WB140PS-2N WB150PS-2N...
  • Page 17 Used as sealant for flange surfaces and bolts Gasket at high temperature locations; used to pre- sealant 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. WB140PS-2N WB150PS-2N 00-11...
  • Page 18 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) 00-12 WB140PS-2N WB150PS-2N...
  • Page 19 2890 - 3630 2131.55 - 2677.35 Thread diameter of bolt Width across flats lbf ft 5.9 - 9.8 4.35 - 7.22 13.7 - 23.5 10.10 - 17.33 34.3 - 46.1 25.29 - 34.00 74.5 - 90.2 54.94 - 66.52 WB140PS-2N WB150PS-2N 00-13...
  • Page 20 36.1 ± 14.4 78.5 ± 19.6 57.8 ± 14.4 137.3 ± 29.4 101.2 ± 21.6 176.5 ± 29.4 130.1 ± 21.6 196.1 ± 49 144.6 ± 36.1 245.2 ± 49 180.8 ± 36.1 294.2 ± 49 216.9 ± 36.1 00-14 WB140PS-2N WB150PS-2N...
  • Page 21 177 - 245 {130.5 - 180.7} 216 {159.3} 1 3/16 - 12UN 30.2 (10) 177 - 245 {130.5 - 180.7} 216 {159.3} (12) 197 - 294 {145.3 - 216.8} 245 {180.7} (14) 246 - 343 {181.4 - 252.9} 294 {216.8} WB140PS-2N WB150PS-2N 00-15...

  • Page 22: Other

    White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue 00-16 WB140PS-2N WB150PS-2N...
  • Page 23 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 WB140PS-2N WB150PS-2N 00-17...
  • Page 24 138.89 141.10 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-18 WB140PS-2N WB150PS-2N...
  • Page 25 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 WB140PS-2N WB150PS-2N 00-19...
  • Page 26 118.657 119.394 120.131 120.868 121.605 122.342 123.079 123.816 124.553 125.29 126.027 126.764 127.501 128.238 128.975 129.712 130.449 131.186 131.923 132.66 133.397 134.134 134.871 135.608 136.345 137.082 137.819 138.556 139.293 140.03 140.767 141.504 142.241 142.978 143.715 144.452 145.189 145.926 146.663 00-20 WB140PS-2N WB150PS-2N...
  • Page 27 1442.55 1451.4 1460.25 1469.1 1477.95 1486.8 1495.65 1504.5 1513.35 1522.2 1531.05 1539.9 1548.75 1557.6 1566.45 1575.3 1584.15 1593 1601.85 1610.7 1619.55 1628.4 1637.25 1646.1 1654.95 1663.8 1672.65 1681.5 1690.35 1699.2 1708.05 1716.9 1725.75 1734.6 1743.45 1752.3 1761.15 WB140PS-2N WB150PS-2N 00-21...
  • Page 28 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 00-22 WB140PS-2N WB150PS-2N...
  • Page 29 GENERAL SPECIFICATIONS ................................01-2 WEIGHT TABLE .................................. 01-3 FUEL COOLANT AND LUBRICANTS ..........................01-4 WB140PS-2N WB150PS-2N 01-1...
  • Page 30 Ah @ V 155 @ 12 155 @ 12 Starter Forward 1st Forward 2nd Forward 3rd Forward 4th Travel speeds km/h Reverse 1st Reverse 2nd Reverse 3rd Reverse 4th Front 14-17.5 NHSPR10 Tire pressure kg/cm² Rear 19.5 L24 PR10 01-2 WB140PS-2N WB150PS-2N...
  • Page 31 GENERAL WEIGHT TABLE WEIGHT TABLE ★ This table is a guide for use when transporting or handling components. Unit : kg Machine Model WB140PS-2N WB150PS-2N WB140PS-2N WB150PS-2N 01-3...
  • Page 32 It is not our policy to approve fuel, coolant and lubricants or to guarantee performance in service. The responsibility for the quality of the fuel, coolant and lubricant must remain with the supplier. When in doubt, consult your Komatsu distributor. The following table shows specified fuel, coolant and lubricants recom- mended for this machine.
  • Page 33 Specified Capacity Total amount of oil including oil for components and piping. Refill Capacity Amount of oil needed to refill system during normal maintenance. Other equipment may be necessary when operating the machine at temperatures below -20°C. Consult your Komatsu distribu- tor for your specific needs.
  • Page 34 GENERAL MEMORANDA 01-6 WB140PS-2N WB150PS-2N...
  • Page 35 STRUCTURE ..............................10-67 OPERATING PRINCIPLES .......................... 10-68 UNLOADING VALVE..........................10-70 INTRODUCTION OF THE LS PRESSURE....................10-73 DELIVERY COMPENSATION ........................10-74 LIFD CONTROL SYSTEM........................... 10-77 LS DECOMPRESSION VALVE........................10-78 PRESSURE CUT OFF VALVE........................10-79 PRIORITY VALVE ............................10-80 WB140PS-2N WB150PS-2N 10-1...
  • Page 36 BOOM ................................10-91 ARM ................................10-92 BUCKET ................................ 10-93 TELESCOPIC ARM CYLINDER ......................... 10-94 SWING ................................10-95 OUTRIGGER ..............................10-96 BOOM LOCK CYLINDER ........................... 10-97 FRONT WORK EQUIPMENT ..........................10-98 REAR WORK EQUIPMENT ..........................10-100 AIR CONDITIONING ............................10-102 10-2 WB140PS-2N WB150PS-2N...
  • Page 37 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE MOUNTING ENGINE MOUNTING TIER ENGINE WB140PS-2N WB150PS-2N 10-3...
  • Page 38 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD ENGINE MOUNTING Engine Transmission Mount Transmission Rear Axle Input Engine Mount Front Axle Input TIER ENGINE 10-4 WB140PS-2N WB150PS-2N...
  • Page 39 POWER FLOW Front Axle Rear Axle Gear Trans Diff Planet Total Trans Diff Planet Total 4.374 62.592 5.44 92.893 2.436 34.859 3.030 51.74 2.436 6.000 2.846 6.000 1.232 17.630 1.5532 26.16 0.651 9.316 0.810 13.832 WB140PS-2N WB150PS-2N 10-5...
  • Page 40 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN Engine Rear Drive Shaft Front Drive Shaft Convert Transmission Rear Axle Front Axle Hydraulic Pump Rear Tires Front Tires 10-6 WB140PS-2N WB150PS-2N...
  • Page 41 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

This manual is also suitable for:

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