Complete service repair manual with Electrical Wiring Diagrams for Komatsu Bulldozer D150A & D155A, with all the technical information to maintain, diagnose, repair, and rebuild like professional mechanics.

Komatsu Bulldozer D150A & D155A workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

SEBM0170A07 - Bulldozer D150A-1, D155A-1 Shop Manual.pdf
SEBM0170A07R - Bulldozer D150A-1, D155A-1 Shop Manual (SN8408&up).pdf

PRODUCT DETAILS:
Total Pages: 1,110 + 993 pages
File Format: PDF
Language: English

TABLE OF CONTENTS
GENERAL
ENGINE
POWER TRAIN
UNDERCARRIAGE
HYDRAULIC SYSTEM
WORK EQUIPMENT
OTHERS

SEBM0170A07 - Bulldozer D150A-1, D155A-1 Shop Manual....2
  COVER....2
  CONTENTS....3
  GENERAL....19
    GENERAL....20
      GENERAL VIEWS....21
      SPECIFICATIONS....28
      GENERAL ASSEMBLY DRAWING....30
      ENGINE ASSEMBLY DRAWING....42
      ENGINE SPECIFICATIONS....43
      WEIGHT TABLE....46
      POSITIONS OF SERIAL NUMBERS....52
      TABLE OF OIL AND COOLANT QUANTITIES....54
      OIL AND WATER FILLING AND DRAIN POINTS....56
  ENGINE....59
    11 STRUCTURE AND FUNCTION....59
      STRUCTURE AND FUNCTION....60
        RADIATOR, FAN....61
        OIL COOLER....66
        P.T.O. (POWER TAKE-OFF)....67
        ENGINE CONTROL....68
        FUEL PIPING....69
    12 TESTING AND ADJUSTING....70
      TESTING AND ADJUSTING....71
        TESTING AND ADJUSTING TOOL LIST ....72
        TESTING AND ADJUSTING, TROUBLE SHOOTING CRITERIA....73
        GENERAL INSTRUCTIONS....77
          MEASURING ENGINE SPEED....77
          CRANKING METHOD....78
        INTAKE AND EXHAUST SYSTEM....79
          CHECKING AIR CLEANER ELEMENT FOR CLOGGING....79
          INSPECTION OF TURBOCHARGER....80
          ADJUSTMENT OF VALVE CLEARANCE....81
          CHECKING EXHAUST COLOR....82
        ENGINE BODY....83
          MEASURING BLOW-BY....83
          MEASURING COMPRESSION PRESSURE....84
        LUBRICATION SYSTEM....85
          CHECKING OIL....85
          MEASURING OIL PRESSURE AND TEMPERATURE....86
        FUEL SYSTEM....87
          CHECKING FUEL....87
          CHECKING FUEL CONTROL LEVER POSITION....87
          AIR-BLEEDING OF FUEL CIRCUIT....88
          CHECKING FUEL DELIVERY TIMING....88
    13 DISASSEMBLY AND ASSEMBLY....90
      DISASSEMBLY AND ASSEMBLY....91
        DISMOUNTING TURBOCHARGER....92
        MOUNTING TURBOCHARGER....94
        DISMOUNTING ENGINE OIL COOLER....96
        MOUNTING ENGINE OIL COOLER....99
        DISMOUNTING TORQUE CONVERTER OIL COOLER....102
        MOUNTING TORQUE CONVERTER OIL COOLER....105
        DISMOUNTING NOZZLE HOLDER....108
        MOUNTING NOZZLE HOLDER....109
        DISMOUNTING FUEL INJECTION PUMP....110
        MOUNTING FUEL INJECTION PUMP....112
        DISMOUNTING AND MOUNTING FAN BELT....115
        DISMOUNTING WATER PUMP....116
        MOUNTING WATER PUMP....118
        DISMOUNTING STARTING MOTOR....120
        MOUNTING STARTING MOTOR....121
        DISMOUNTING ALTERNATOR....122
        MOUNTING ALTERNATOR....123
        DISMOUNTING CYLINDER HEAD....124
        MOUNTING CYLINDER HEAD....131
        DISMOUNTING FUEL TANK....139
        MOUNTING FUEL TANK....141
        DISMOUNTING RADIATOR GUARD....149
        MOUNTING RADIATOR GUARD....153
        DISMOUNTING RADIATOR....157
        MOUNTING RADIATOR ....161
        DISMOUNTING ENGINE ....171
        MOUNTING ENGINE....179
        DISMOUNTING CHASSIS RELATED PARTS FROM ENGINE....210
        MOUNTING CHASSIS RELATED PARTS ON ENGINE....212
  POWER TRAIN....214
    21 STRUCTURE AND FUNCTION....214
      STRUCTURE AND FUNCTION....215
        GENERAL ....216
        MAIN CLUTCH (D150A)....220
          INERTIA BRAKE....224
          MAIN CLUTCH HYDRAULIC....225
          MAIN CLUTCH HYDRAULIC BOOSTER ....226
          HYDRAULIC SYSTEM....228
          HYDRAULIC CIRCUIT....228
          MAIN CLUTCH PUMP....229
        TRANSMISSION (D150A)....230
          INTERLOCK....235
          DOUBLE MESH PREVENTIVE DEVICE....237
          TRANSMISSION LUBRICATION VALVE....238
        TORQUE CONVERTER (D155A)....239
        TRANSMISSION (D155A)....244
          POWER TRANSMITTING LINE....250
          TORQFLOW HYDRAULIC PIPING....254
        TORQFLOW HYDRAULIC SYSTEM....257
        TORQFLOW HYDRAULIC CIRCUIT....258
        TRANSMISSION LUBRICATION RELIEF VALVE....263
        TRANSMISSION CONTROL VALVE....264
        TRANSMISSION PUMP....271
        TRANSMISSION, STEERING OIL STRAINER....272
        TRANSMISSION OIL FILTER....273
        BEVEL GEAR SHAFT AND STEERING CLUTCH....274
        STEERING AND BRAKE PIPING....277
        STEERING HYDRAULIC SYSTEM....281
        STEERING HYDRAULIC CIRCUIT....282
        BRAKE HYDRAULIC SYSTEM....285
        BRAKE HYDRAULIC CIRCUIT....286
        STEERING BRAKE AND BOOSTER....289
        STEERING CONTROL VALVE....292
        STEERING AND BRAKE PIPING....297
        STEERING AND BRAKE HYDRAULIC SYSTEM....299
        STEERING AND BRAKE HYDRAULIC CIRCUIT....300
        STEERING BRAKE AND BOOSTER....301
        STEERING CONTROL VALVE....307
        STEERING PUMP....312
        STEERING OIL FILTER....313
        FINAL DRIVE....314
    22 TESTING AND ADJUSTING....317
      TESTING AND ADJUSTING....318
        GENERAL....319
        MAIN CLUTCH HYDRAULIC CONTROL....321
        TORQFLOW HYDRAULIC CONTROL....323
        STEERING HYDRAULIC CONTROL....329
        BRAKE HYDRAULIC CONTROL....335
        TABLE OF OIL PRESSURE MEASURING POINTS....339
        MEASUREMENT OF OIL PRESSURE AND TEMPERATURE....340
        PROCEDURE FOR MEASURING OIL PRESSURE AND TEMPERATURE....346
        PROCEDURE FOR MEASUREMENT OF LEVER AND PEDAL TRAVEL....352
        MEASUREMENT OF OPERATING FORCE....353
        ADJUSTMENT PROCEDURE FOR STROKES....356
        TABLE OF MAINTENANCE STANDARDS....359
    23 DISASSEMBLY AND ASSEMBLY....362
      DISASSEMBLY AND ASSEMBLY....363
        DISASSEMBLY OF PTO AND FLYWHEEL HOUSING....366
        ASSEMBLY OF PTO AND FLYWHEEL HOUSING....370
        DISASSEMBLY OF MAIN CLUTCH ASSEMBLY....374
        ASSEMBLY OF MAIN CLUTCH ASSEMBLY....377
        DISASSEMBLY OF TRANSMISSION ASSEMBLY....382
        ASSEMBLY OF TRANSMISSION ASSEMBLY....389
        DISMOUNTING TORQUE CONVERTER....399
        MOUNTING TORQUE CONVERTER....403
        DISASSEMBLY OF TORQUE CONVERTER (1/2),(2/2)....407
        ASSEMBLY OF TORQUE CONVERTER (1/2),(2/2)....415
        DISMOUNTING TORQUE CONVERTER RELIEF VALVE....431
        MOUNTING TORQUE CONVERTER RELIEF VALVE....432
        DISMOUNTING TORQUE CONVERTER REGULATOR VALVE....433
        MOUNTING TORQUE CONVERTER REGULATOR VALVE....434
        DISMOUNTING TORQFLOW TRANSMISSION....435
        MOUNTING TORQFLOW TRANSMISSION....443
        DISASSEMBLY OF TORQFLOW TRANSMISSION (1/2),(2/2)....451
        ASSEMBLY OF TORQFLOW TRANSMISSION (1/2),(2/2)....463
        DISMOUNTING TRANSMISSION CONTROL VALVE....485
        MOUNTING TRANSMISSION CONTROL VALVE....487
        DISASSEMBLY OF TRANSMISSION CONTROL VALVE....489
        ASSEMBLY OF TRANSMISSION CONTROL VALVE....491
        DISMOUNTING TRANSMISSION LUBRICATION VALVE....494
        MOUNTING TRANSMISSION LUBRICATION VALVE....495
        DISMOUNTING STEERING CLUTCH....496
        MOUNTING STEERING CLUTCH....500
        DISASSEMBLY OF STEERING CLUTCH....512
        ASSEMBLY OF STEERING CLUTCH ....514
        DISMOUNTING BEVEL GEAR AND BEVEL GEAR SHAFT....516
        MOUNTING BEVEL GEAR AND BEVEL GEAR SHAFT....519
        DISMOUNTING FINAL DRIVE 1ST PINION....525
        MOUNTING FINAL DRIVE 1ST PINION....527
        DISMOUNTING STEERING CONTROL VALVE....530
        MOUNTING STEERING CONTROL VALVE....531
        DISMOUNTING STEERING BRAKE INTERLOCKING VALVE....532
        MOUNTING STEERING BRAKE INTERLOCKING VALVE....533
        DISASSEMBLY OF STEERING CONTROL VALVE....534
        ASSEMBLY OF STEERING CONTROL VALVE....536
        DISASSEMBLY OF STEERING BRAKE INTERLOCKING VALVE....538
        ASSEMBLY OF STEERING BRAKE INTERLOCKING VALVE....538
        DISMOUNTING BRAKE SAFETY VALVE....540
        MOUNTING BRAKE SAFETY VALVE....541
        DISASSEMBLY OF BRAKE SAFETY VALVE....542
        ASSEMBLY OF BRAKE SAFETY VALVE....542
        ADJUSTING MAIN CLUTCH....544
        DISMOUNTING STEERING MAIN RELIEF VALVE....545
        MOUNTING STEERING MAIN RELIEF VALVE....545
        DISASSEMBLY OF STEERING MAIN RELIEF VALVE....546
        ASSEMBLY OF STEERING MAIN RELIEF VALVE....546
        DISMOUNTING BRAKE BOOSTER....547
        MOUNTING BRAKE BOOSTER....548
        DISASSEMBLY OF BRAKE BOOSTER....549
        ASSEMBLY OF BRAKE BOOSTER....550
        DISASSEMBLY OF FINAL DRIVE....551
        ASSEMBLY OF FINAL DRIVE....557
        DISMOUNTING TORQFLOW PUMP....564
        MOUNTING TORQFLOW PUMP....566
        DISMOUNTING STEERING PUMP....568
        MOUNTING STEERING PUMP....569
        DISMOUNTING TORQUE CONVERTER OIL COOLER....570
        MOUNTING TORQUE CONVERTER OIL COOLER....573
        DISMOUNTING FLOOR FRAME....576
        MOUNTING FLOOR FRAME....580
        DISMOUNTING FLOOR FRAME....584
        MOUNTING FLOOR FRAME....586
        DISMOUNTING ROPS CAB....588
        MOUNTING ROPS CAB....591
        TILTING ROPS CAB....594
        RETURNING ROPS CAB ASSEMBLY TO ITS ORIGINAL POSITION....598
        DISMOUNTING FUEL TANK....602
        MOUNTING FUEL TANK....604
        DISMOUNTING RADIATOR....606
        MOUNTING RADIATOR....610
        DISMOUNTING RADIATOR GUARD....614
        MOUNTING RADIATOR GUARD....618
    24 MAINTENANCE STANDARD....622
      MAINTENANCE STANDARD....624
        MAIN CLUTCH ....625
          (1) PLATE, GEAR, SHAFT....625
          (2) MAIN CLUTCH BOOSTER....627
          (3) INERTIA BRAKE....628
        TORQUE CONVERTER (K1015~3724)....629
          (1) TORQUE CONVERTER....629
          (2) RELIEF VALVE, REGULATOR VALVE....631
        TORQUE CONVERTER (K3725～, K1001～)....632
          (1) TORQUE CONVERTER....632
          (2) RELIEF VALVE, REGULATOR VALVE....635
        TRANSMISSION....636
          (1) TRANSMISSION CASE, GEAR....636
          (2) GEAR SHIFT LEVER....638
        TRANSMISSION....640
          (1) TRANSMISSION....640
          (2) TRANSMISSION CONTROL VALVE....642
          (3) TRANSMISSION CONTROL VALVE SPRING....646
        BEVEL GEAR SHAFT AND STEERING SYSTEM....650
          (1) BEVEL GEAR SHAFT AND BEVEL GEAR....650
          (2) STEERING CLUTCH....652
          (3) STEERING BRAKE....654
          (4) STEERING CONTROL VALVE....655
          (5) BRAKE VALVE AND BRAKE BOOSTER....659
        FINAL DRIVE....660
  UNDERCARRIAGE....663
    31 STRUCTURE AND FUNCTION....663
      STRUCTURE AND FUNCTION....664
        TRACK (MASTER PIN TYPE)....665
        TRACK (MASTER LINK TYPE)....666
        TRACK GROUP....669
        RECOIL SPRING....670
        IDLER....671
        TRACK ROLLER, CARRIER ROLLER....672
        SUSPENSION....673
    33 DISASSEMBLY AND ASSEMBLY....675
      DISASSEMBLY AND ASSEMBLY....676
        SEPARATION OF TRACK....677
        CONNECTION OF TRACK....679
        DISMOUNTING CARRIER ROLLER....685
        MOUNTING CARRIER ROLLER....686
        DISMOUNTING TRACK ROLLER....687
        MOUNTING TRACK ROLLER....689
        DISMOUNTING IDLER....691
        MOUNTING IDLER....693
        DISMOUNTING RECOIL SPRING....695
        MOUNTING RECOIL SPRING....698
        DISASSEMBLY OF RECOIL SPRING....701
        ASSEMBLY OF RECOIL SPRING....703
        DISMOUNTING TRACK FRAME....705
        MOUNTING TRACK FRAME....707
    34 MAINTENANCE STANDARD....709
      MAINTENANCE STANDARD....711
        UNDERCARRIAGE....712
          (1) TRACK (MASTER PIN TYPE)....712
          (2) TRACK (MASTER LINK TYPE) ....714
          (2) LDLER....720
          (3) TRACK ROLLER....722
          (4) CARRIER ROLLER....724
          (5) TRACK FRAME....725
          (6) RECOIL SPRING....726
  HYDRAULIC SYSTEM....727
    61 STRUCTURE AND FUNCTION....727
      STRUCTURE AND FUNCTION....728
        HYDRAULIC CONTROL....729
        HYDRAULIC TANK....738
        HYDRAULIC CONTROL VALVE....740
        RIPPER SELECTOR VALVE AND PILOT CHECK VALVE....743
        PIN PULLER VALVE....747
        PILOT VALVE....751
        ROTARY SERVO VALVE....753
        SERVO VALVE HYDRAULIC CONTROL (D150A)....756
        SERVO VALVE HYDRAULIC CIRCUIT (D150A)....756
        SERVO VALVE HYDRAULIC CONTROL (D155A)....757
        SERVO VALVE HYDRAULIC CIRCUIT (D155A)....757
        SAFETY VALVE....759
        CYLINDER....760
        PISTON VALVE....762
        QUICK DROP VALVE....763
        HYDRAULIC CONTROL ....764
        PIN PULLER....786
    62 TESTING AND ADJUSTING....789
      TESTING AND ADJUSTING....790
        GENERAL DESCRIPTION....791
        HYDRAULIC CONTROL....792
        PIN PULLER CONTROL....794
        TABLE OF OIL PRESSURE MEASURING POINTS....795
        MEASUREMENT OF OIL PRESSURE AND TEMPERATURE....796
        MEASUREMENT PROCEDURE OF OIL PRESSURE AND TEMPERATURE....797
        MEASURING THE HYDRAULIC PUMP DELIVERY....798
        MEASUREMENT OF OPERATING FORCE....800
        MEASUREMENT OF HYDRAULIC DRIFT RATE OF WORK EQUIPMENT....801
        TABLE OF MAINTENANCE STANDARD....802
    63 DISASSEMBLY AND ASSEMBLY....804
      DISASSEMBLY AND ASSEMBLY....805
        DISMOUNTING HYDRAULIC PUMP....808
        MOUNTING HYDRAULIC PUMP....810
        DISMOUNTING HYDRAULIC TANK....812
        MOUNTING HYDRAULIC TANK....816
        DISMOUNTING RIPPER AND BLADE CONTROL VALVE....820
        MOUNTING RIPPER AND BLADE CONTROL VALVE....822
        DISASSEMBLY OF RIPPER AND BLADE CONTROL VALVE....824
        ASSEMBLY OF RIPPER AND BLADE CONTROL VALVE....827
        DISASSEMBLY OF BLADE TILT CONTROL VALVE....830
        ASSEMBLY OF BLADE TILT CONTROL VALVE....831
        DISMOUNTING BLADE LIFT SERVO VALVE....832
        MOUNTING BLADE LIFT SERVO VALVE....834
        DISMOUNTING BLADE TILT SERVO VALVE....836
        MOUNTING BLADE TILT SERVO VALVE....837
        DISMOUNTING RIPPER SERVO VALVE....838
        MOUNTING RIPPER SERVO VALVE....840
        DISMOUNTING RIPPER PIN PULLER VALVE....842
        MOUNTING RIPPER PIN PULLER VALVE....844
        DISASSEMBLY OF PIN PULLER VALVE....846
        ASSEMBLY OF PIN PULLER VALVE....847
        DISMOUNTING RIPPER SELECTOR VALVE....848
        MOUNTING RIPPER SELECTOR VALVE....851
        DISASSEMBLY OF RIPPER SELECTOR VALVE....854
        ASSEMBLY OF RIPPER SELECTOR VALVE....859
        DISMOUNTING BLADE LIFT CYLINDER....864
        MOUNTING BLADE LIFT CYLINDER....865
        DISASSEMBLY OF BLADE LIFT CYLINDER ....866
        ASSEMBLY OF BLADE LIFT CYLINDER....872
        DISMOUNTING BLADE TILT CYLINDER....878
        MOUNTING BLADE TILT CYLINDER....879
        DISASSEMBLY OF BLADE TILT CYLINDER....880
        ASSEMBLY OF BLADE TILT CYLINDER....886
        DISMOUNTING RIPPER LIFT CYLINDER....892
        MOUNTING RIPPER LIFT CYLINDER....893
        DISMOUNTING RIPPER TILT CYLINDER....894
        MOUNTING RIPPER TILT CYLINDER....895
        DISASSEMBLY OF RIPPER CYLINDER....896
        ASSEMBLY OF RIPPER CYLINDER....902
        DISMOUNTING RIPPER PIN PULLER CYLINDER....908
        MOUNTING RIPPER PIN PULLER CYLINDER....909
    64 MAINTENANCE STANDARD....910
      MAINTENANCE STANDARD....912
        HYDRAULIC CONTROL VALVE....913
          (1) BLADE LIFT AND RIPPER CONTROL VALVE....913
          (2) BLADE LIFT CONTROL VALVE....914
          (3) MAIN RELIEF VALVE....915
          (4) SUCTION VALVE, SAFETY VALVE....916
          (5) RIPPER SELECTOR VALVE....917
          (6) RIPPER PIN PULLER VALVE....918
          (7) PILOT VALVE....919
        CYLINDER....920
          (1) BLADE LIFT CYLINDER....920
          (2) BLADE TILT CYLINDER....921
          (3) RIPPER LIFT CYLINDER AND RIPPER TILT CYLINDER....922
  WORK EQUIPMENT....923
    71 STRUCTURE AND FUNCTION....923
      STRAIGHT TILT DOZER....925
      MULTI RIPPER....927
      GIANT RIPPER....931
    72 TESTING AND ADJUSTING....937
      TESTING AND ADJUSTING....938
    73 DISASSEMBLY AND ASSEMBLY....941
      DISASSEMBLY AND ASSEMBLY....942
        DISMOUNTING BLADE....943
        MOUNTING BLADE....945
        DISASSEMBLY TO BLADE....947
        ASSEMBLY OF BLADE....950
        DISASSEMBLY OF RIPPER....953
        ASSEMBLY OF RIPPER....958
    74 MAINTENANCE STANDARD....963
      MAINTENANCE STANDARD....965
        STRAIGHT TILT DOZER....966
          (1) BLADE, FRAME, ARM AND CYLINDER YOKE....966
          (2) CUTTING EDGE AND END BIT....968
        MULTI RIPPER....969
        GIANT RIPPER....971
  OTHERS....973
    90 ELECTRICAL SYSTEM....973
      ELECTRICAL SYSTEM....974
        ELECTRICAL CIRCUIT DIAGRAM....975
        ELECTRICAL WIRING DIAGRAM ....983
        WARNING MODULE....986
        CORRECTIVE ACTION TO BE TAKEN WHEN WARNING MODULE IS ACTIVATED....987
        A.P.S.(AUTOMATIC PRIMING SYSTEM)....989
SEBM0170A07R - Bulldozer D150A-1, D155A-1 Shop Manual (SN8408&up)....995
  ....995
  Contents....996
  Safety....1003
    How to read the shop manual....1006
    Hoisting instructions....1007
    Standard tightening torque....1008
  01 General....1011
    Specifications....1022
    General assembly drawing....1024
    Engine specifications....1037
    Weight table....1040
    Position of serial numbers (Engine)....1046
    Position of serial numbers (body)....1047
    Table of oil and coolant....1048
  11 Engine structure and function....1055
    Radiator, fan....1058
    Oil cooler....1064
    P.T.O....1065
    Engine control....1066
    Fuel piping....1067
  12 Engine Testing and adjusting....1069
    Tool list....1072
    Trouble shooting criteria....1073
    General instructions....1078
    Intake ans exhaust system....1080
    Engine body....1084
    Lubrication system....1086
    Fuel system....1088
  13 Engine disassembly and assembly....1091
    Dismounting turbocharger....1094
    mounting turbocharger....1096
    Dismounting engine oil cooler....1098
    Mounting engine oil cooler....1102
    torque convertor oil cooler....1106
    Nozzle holder....1112
    Fuel injection pump....1116
    Fan belt....1122
    Water pump....1124
    Starting motor....1128
    Alternator....1131
    Cylinder head....1136
    Fuel tank....1152
    Radiator guard....1162
    Radiator....1170
    Engine....1184
  21 Power traing Structure and functions....1231
    General....1234
    Main clutch....1238
    Inertia brake....1242
    Transmisssion D150A....1248
    Double mesh preventive device....1255
    Torque convertor....1258
    Transmission D155A....1262
    Torqflow....1272
    Transmission lubrication relief vanlve....1280
    Transmission control valve....1281
    Transmission pump....1289
    Bevel gear shaft and steering clutch....1292
    Steering and brake piping....1296
    steering hydraulic system....1300
    Brake hydraulic system....1304
    Steering brake and booster D150A AND D155A....1308
      Steering control valve....1312
      Steering and brake piping....1318
      Steering and brake hydraulic circuit....1321
    Steering brake and booster D155A 25001....1322
    Steering control valve d155a 25001....1328
    Steering pump....1333
    Final drive....1335
  22 power train testing and adjusting....1339
    Main clutch hydraulic control....1344
    Torqflow hydraulic control....1346
    Steering hydraulic control....1352
    Brake hydraulic control....1358
    Table of oil pressure measuring points....1362
    Procedure for measuring oil pressure and temperature....1370
    Procedure for measurment of lever and pedal travel....1376
    Adjustment procedure for strokes....1380
    Adjusting main clutch....1384
    Table of maintenance standerds....1386
  23 Power train disassembly and assembly....1389
    pto and flywheel....1394
    Main clutch....1402
    Transmission assembly....1410
    Torque convertor....1428
    Torque convertor relief valve....1462
    Torque converter regulator valve....1466
    Torqflow transmission D155 15001 - 25000....1470
    Torqflow transmission D155A Sn 25001....1510
      Mounting Torqflow transmission....1515
      Dismounting Transmission control valve....1520
      Mounting transmission control valve....1522
      Transmission lubrication valve....1529
      Steering clutch....1532
    Bevel gear and bevel gear shaft....1552
    Final drive....1562
    Steering control valve....1568
    Steering brake interlocking valve....1572
    Brake safety valve....1580
    Brake booster....1588
    Final drive....1594
    Torqflow pump....1608
    Steering pump....1612
    Torque converter oil cooler....1616
    Floor frame....1624
    Rops cab....1636
    Fuel tank....1650
    Radiator....1654
    Radiator guard....1662
  24 Power Train Maintenance standard....1671
    Transmission....1686
    Bevel gear shaft and steering system....1700
    Final drive....1714
  31 Undercarriage Structure and function....1717
    Track....1720
    Track group....1724
    Recail spring....1725
    Idler....1726
    Track roller, carrier roller....1727
    Suspension....1728
  32 undercarriage Testing and adjusting....1731
  33 indercarriage Disassembly and assembly....1733
    track....1736
    Carrier roller....1744
    Track roller....1748
    Idler....1752
    Recoil spring....1756
    Track frame....1768
  34 Undercarriage maintenance standard....1773
    Undercarriage....1776
  61 Hydraulic system structure and function....1791
    Hydraulic control....1794
    Hydraulic tank....1804
    Hydraulic control valve....1806
    Ripper selector valve and pilot check valve....1810
    Pin puller valve....1814
    Pilot valve....1818
    Rotary servo valve....1821
    Servo valve hydralic control/valve....1824
    Safety valve....1827
    Cylinders....1828
    Piston valve....1830
    Hydraulic control....1832
  62 Hydraulic system testing and adjusting....1857
    General description....1860
    Hydraulic control....1862
    Pin puller control....1864
    Measurment of oil pressure and temperature....1865
    Measurment of operating force....1869
    Table of maintance standard....1872
  63 Hydraulic control sysyem Disassembly and assembly....1875
    Disassembly and assembly....1877
    Hydraulic pump....1880
    Hydraulic tank....1884
    Ripper & blade control valve....1892
    Blade tilt control valve....1903
    Blade tilt servo valve....1908
    Ripper servo valve....1916
    Ripper pin puller valve....1920
    Ripper selector valve....1928
    Blade lift cylinder....1947
    Blade tilt cylinder....1964
    Ripper lift & Tilt cylinder....1980
    Ripper pin puller cylinder....2000
  64 Hydraulic system Maintance standard....2003
    Torque specifications for nuts and bolts....2004
    Hydraulic control valve....2006
    Cylinders....2015
  71 Work equipment structure and function....2019
    Multi ripper....2024
    Giant ripper....2028
  72 Work equipment testing and adjustment....2035
    Straight tilt dozer....2038
  73 work equipment disassembly & assembly....2041
    Blade....2044
    Ripper....2055
  74 Work equipment Maintenance standard....2067
    Torque specifications....2068
    Straight tilt dozer....2070
    Multi ripper....2074
    Giant ripper....2076
  90 Others Electrical system....2079
    Electical circuit diagram....2082
    Electical wiring diagram....2090
    Warning module....2093
    Automatic priming system....2096

Komatsu Bulldozer D150A & D155A Repair Service Manual