Komatsu WB140PS-2N WB150PS-2N BACKHOE LOADER Shop Manual CEBM011100 – PDF

Description

Komatsu WB140PS-2N WB150PS-2N BACKHOE LOADER Shop Manual CEBM011100 – PDF DOWNLOAD

FILE DETAILS:

Komatsu WB140PS-2N WB150PS-2N BACKHOE LOADER Shop Manual CEBM011100 – PDF DOWNLOAD

Language : English
Pages :498
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu WB140PS-2N WB150PS-2N BACKHOE LOADER Shop Manual CEBM011100 – PDF DOWNLOAD

SERIAL NUMBERS
WB140PS-2N A40001
 WB150PS-2N A70001 and UP

• This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
• This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following sections. These sections are further divided into each main group of components

GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and
lubricant specification charts.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the
structure, but also serves as reference material for troubleshooting.
TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion
of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or assembling each component,
as well as precautions to be taken for these operations.
MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts

TABLE OF CONTENTS:

Komatsu WB140PS-2N WB150PS-2N BACKHOE LOADER Shop Manual CEBM011100 – PDF DOWNLOAD

SERIAL NUMBERS
WB140PS-2N A40001
 WB150PS-2N A70001 and UP

MAIN MENU 0
COVER 1
CONTENTS 2
FOREWORD 4
SAFETY 3
SAFETY NOTICE 3
IMPORTANT SAFETY NOTICE 3
GENERAL PRECAUTIONS 3
PREPARATIONS FOR WORK 3
PRECAUTIONS DURING WORK 3
GENERAL 5
HOW TO READ THE SHOP MANUAL 6
VOLUMES 6
DISTRIBUTION AND UPDATING 6
FILING METHOD 6
REVISED EDITION MARK 6
REVISIONS 6
SYMBOLS 6
HOISTING INSTRUCTIONS 7
HOISTING 7
WIRE ROPES 7
COATING MATERIALS 8
STANDARD TIGHTENING TORQUE 10
STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS 10
TIGHTENING TORQUE OF HOSE NUTS 11
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS 11
TIGHTENING TORQUE FOR FLARED NUTS 11
ELECTRIC WIRE CODE 12
CLASSIFICATION BY THICKNESS 12
CLASSIFICATION BY COLOR AND CODE 12
CONVERSION TABLES 13
METHOD OF USING THE CONVERSION TABLE 13
10 STRUCTURE AND FUNCTION 21
POWER TRAIN 24
TRANSMISSION 26
DIAGRAM OF THE POWER TRAIN 26
HYDRAULIC CONVERTER-TRANSMISSION CIRCUIT DIAGRAM 27
TRANSMISSION 28
DRIVE SHAFTS 33
DRIVE SHAFT FOR FORWARD AND REVERSE MOVEMENT 33
DRIVE SHAFT 33
DRIVEN GEAR SHAFT 34
DRIVEN SHAFT 4WD 34
CONTROL VALVE BLOCK 35
FRONT AXLE 37
DIFFERENTIAL 37
FINAL-REDUCTION-JOINT 39
STEERING CYLINDER 41
REAR AXLE 43
DIFFERENTIAL 43
FINAL REDUCTION 45
BRAKES 47
DIFFERENTIAL LOCKING 49
HYDRAULIC PUMP 51
FUNCTION 56
STRUCTURE 56
OPERATION 57
PUMP OPERATION 57
CONTROL OF DELIVERY 58
PC VALVE, LS VALVE, SERVO PISTON 59
LS VALVE 60
FUNCTION 60
OPERATION 61
PC VALVE 66
FUNCTION 66
OPERATION 67
WORKING MODE SOLENOID VALVE 71
FUNCTION 71
OPERATION 71
STEERING UNIT 73
TECHNICAL DATA 73
OPERATION 73
HYDRAULIC CIRCUIT 74
SHOVEL CONTROL VALVE 76
2-SPOOL 76
3-SPOOL 80
BACKHOE CONTROL VALVE 84
6-SPOOL 84
7-SPOOL 91
FOR TELESCOPIC ARM 91
FOR HAMMER 91
8-SPOOL 95
FOR HAMMER AND TELESCOPIC ARM 95
CLSS (CLOSED CENTER LOAD SENSING SYSTEM) 98
DESCRIPTION 98
CHARACTERISTICS 98
STRUCTURE 98
OPERATION 99
UNLOADING VALVE101
FUNCTION101
OPERATION101
INTRODUCTION OF THE LS PRESSURE104
OPERATION104
DELIVERY COMPENSATION105
INTRODUCTION105
FUNCTION105
OPERATION105
LIFD CONTROL SYSTEM108
FUNCTION108
OPERATION108
LS DECOMPRESSION VALVE109
DESCRIPTION109
OPERATION109
PRESSURE CUT-OFF VALVE110
DESCRIPTION110
OPERATION110
PRIORITY VALVE (ONLY FOR THE 2-3-SPOOL CONTROL VALVE)111
FUNCTION111
SOLENOID VALVE112
SOLENOID VALVE BLOCK ST1 – DIFFERENTIAL LOCKING – BACKHOE BOOM LOCKING112
SAFETY VALVE113
BRAKE PUMP115
SHOVEL CYLINDERS117
RAISING CYLINDER117
DUMPING CYLINDER117
DUMP CYLINDER118
RAISE CYLINDER118
BACKHOE CYLINDERS119
BOOM119
ARM119
BUCKET120
OUTRIGGERS120
BOOM SWING120
TELESCOPIC ARM121
CHARACTERISTICS121
BACKHOE CYLINDER MAINTENANCE STANDARD122
BOOM122
ARM122
BUCKET122
BOOM SWING122
OUTRIGGER124
TELESCOPIC ARM124
FRONT WORKING EQUIPMENT126
SWING BRACKET128
BACKHOE WORK EQUIPMENT130
AIR-CONDITIONING UNIT132
AIR-CONDITIONING UNIT FUNCTION133
20 TESTING, ADJUSTING AND TROUBLESHOOTING135
NORMAL OR STANDARD TECHNICAL DATA138
FOR ENGINE138
FOR MACHINE139
SPECIAL TOOLS151
MEASURING ENGINE SPEED152
ADJUSTING VALVE CLEARANCE153
MEASURING COMPRESSION PRESSURE154
FUEL INJECTION TIMING155
FAN BELT157
TENSION CHECK157
FAN BELT TENSION157
COMPRESSOR BELT158
CHECKING TENSION158
FAN BELT TENSION158
ACCELERATOR PEDAL AND LEVER159
OPERATING TRAVEL159
ACCELERATOR PEDAL TRAVEL ADJUSTING159
ACCELERATOR LEVER TRAVEL ADJUSTING160
BRAKE PEDAL AND ALIGNMENT161
TRAVEL AND MICRO SWITCHES161
MASTER CYLINDER ROD ADJUSTMENT161
MICROSWITCHES ADJUSTMENT161
AIR BLEEDING162
RELEASING RESIDUAL PRESSURE162
AIR BLEEDING FROM PUMP162
AIR BLEEDING FROM CYLINDERS162
AIR BLEEDING FROM OIL TANK163
HYDRAULIC OIL TANK PRESSURIZATION163
RELEASING RESIDUAL PRESSURE FROM CIRCUITS163
AIR BLEEDING FROM BRAKING CIRCUIT163
CHECKING AIR BLEEDING FROM BRAKING CIRCUIT164
ATTACHMENTS HYDRAULIC CIRCUIT165
CHECKING AND SETTING PRESSURE165
INTRODUCTION165
TESTING AND SETTING GENERAL VALVES167
TESTING AND SETTING SECONDARY VALVES167
MAIN AND SECONDARY VALVES SETTING170
SENSING SIGNAL (LS VALVE)172
UNLOADING VALVE173
ADJUSTING THE UNLOADING VALVE173
UNLOADING VALVE FUNCTIONALITY174
PRIORITY VALVE175
TESTING PRIORITY VALVE OPERATION175
CLEANING PRIORITY VALVE175
STEERING CONTROL SYSTEM PRESSURE176
TESTING176
SETTING176
BRAKE SYSTEM177
TESTING CIRCUIT AND BRAKE TIGHTNESS177
TESTING BRAKING GROUP LEAK TIGHTNESS178
ENGINE SPEED CONTROL179
UNDER LOAD179
PREPARING THE MACHINE179
TESTING WITH THE TORQUE CONVERTER UNDER STRESS180
TESTING THE TORQUE CONVERTER AND HYDRAULIC SYSTEM UNDER STRESS180
POWER TRAIN PRESSURES181
PREPARING THE MACHINE181
CONVERTER OIL PRESSURE181
CLUTCH ENGAGEMENT PRESSURE182
POWER TRAIN CLUTCHES FUNCTION183
PREPARATION OF THE MACHINE183
TESTING183
RETURN TO DIG DEVICE SENSOR184
ANALYSIS OF HYDRAULIC DRIFT185
FRONT EQUIPMENT185
TESTING FRONT BUCKET LIFTING185
TESTING FRONT BUCKET DUMPING186
BACKHOE187
BOOM TESTING187
ARM TESTING187
BUCKET TESTING188
OUTRIGGERS TESTING189
AIR-CONDITIONING UNIT190
TESTING THE WORKING TEMPERATURE190
CHECKING THE UNIT191
EMPTYING THE AIR CONDITIONING UNIT192
FRONT AXLE TROUBLESHOOTING193
REAR AXLE TROUBLESHOOTING198
TRANSMISSION TROUBLESHOOTING205
ELECTRONIC CONTROL UNIT INSPECTION208
FAILURE208
NUMERICAL ERROR208
ANOMALY208
30 DISASSEMBLY AND ASSEMBLY211
METHOD OF USING MANUAL216
PRECAUTIONS DURING OPERATION217
SPECIAL TOOLS220
STARTING MOTOR223
REMOVAL223
INSTALLATION223
ALTERNATOR224
REMOVAL224
INSTALLATION224
AIR CONDITIONING COMPRESSOR225
REMOVAL225
INSTALLATION226
INJECTION PUMP227
REMOVAL227
INSTALLATION230
INJECTION NOZZLES231
REMOVAL231
INSTALLATION232
THERMOSTAT233
REMOVAL233
INSTALLATION234
COOLING LIQUID PUMP235
REMOVAL235
INSTALLATION237
TURBOCHARGER238
REMOVAL238
INSTALLATION239
CYLINDER HEAD240
REMOVAL240
INSTALLATION242
ACCUMULATOR DISCONNECT SWITCH245
REMOVAL245
INSTALLATION245
FRONT COUNTERWEIGHT246
REMOVAL246
INSTALLATION246
RADIATOR OIL COOLER UNIT247
REMOVAL247
INSTALLATION249
CONDENSER250
REMOVAL250
INSTALLATION250
MUFFLER251
REMOVAL251
INSTALLATION251
EXHAUST PIPE252
REMOVAL252
INSTALLATION252
ENGINE HOOD253
REMOVAL253
INSTALLATION254
CAB255
REMOVAL255
INSTALLATION258
HEAT AND AIR CONDITIONING GROUP259
REMOVAL259
INSTALLATION260
FUEL TANK261
REMOVAL261
INSTALLATION262
HYDRAULIC OIL TANK263
REMOVAL263
INSTALLATION264
ENGINE-GEARBOX-PUMP GROUP265
REMOVAL265
INSTALLATION269
PISTON PUMP272
REMOVAL272
INSTALLATION273
TRANSMISSION274
REMOVAL274
INSTALLATION277
TRANSMISSION279
DISASSEMBLY CONVERTER279
ASSEMBLY CONVERTER280
DISASSEMBLY PLUGS AND FILTERS282
ASSEMBLY PLUGS AND FILTERS283
DISASSEMBLY OIL PUMP285
ASSEMBLY OIL PUMP286
DISASSEMBLY PIPES AND SENSORS288
ASSEMBLY PIPES AND SENSORS294
DISASSEMBLY HYDRAULIC CONTROL VALVE299
ASSEMBLY HYDRAULIC CONTROL VALVE301
DISASSEMBLY TRANSMISSION HOUSING303
ASSEMBLY TRANSMISSION HOUSING310
DISASSEMBLY SHAFT A318
ASSEMBLY SHAFT A327
DISASSEMBLY SHAFT B335
ASSEMBLY SHAFT B341
DISASSEMBLY SHAFT C346
ASSEMBLY SHAFT C355
DISASSEMBLY SHAFT E366
ASSEMBLY SHAFT E371
CONVERTER376
REMOVAL376
INSTALLATION377
HEADLIGHT CONTROL GROUP378
REMOVAL OF THE TRANSMISSION INDICATOR AND HEADLIGHT DIMMER378
INSTALLATION OF THE TRANSMISSION- INDICATOR AND HEADLIGHT DIMMER378
STEERING UNIT379
REMOVAL379
INSTALLATION379
WORKING BRAKE PUMP GROUP380
REMOVAL380
INSTALLATION380
FRONT WORK EQUIPMENT CONTROL VALVE381
REMOVAL381
INSTALLATION381
FRONT AXLE382
REMOVAL382
INSTALLATION383
FRONT AXLE384
DISASSEMBLY384
ASSEMBLY393
PINION GROUP ASSEMBLY393
DIFFERENTIAL CARRIER GROUP ASSEMBLY396
AXLE BEAM GROUP ASSEMBLY400
WHEEL HUB GROUP ASSEMBLY401
EPICYCLIC REDUCTION GEAR ASSEMBLY404
STEERING CYLINDERS GROUP ASSEMBLY404
TOE-IN ADJUSTMENT406
STEERING ANGLE ADJUSTMENT407
REAR AXLE409
REMOVAL409
INSTALLATION410
DISASSEMBLY411
EPICYCLIC REDUCTION GEAR DISASSEMBLY411
WHEEL HUB GROUP DISASSEMBLY412
AXLE BEAM TRUMPETS AND BRAKE GROUPS DISASSEMBLY413
BRAKE CONTROL GROUP DISASSEMBLY416
DIFFERENTIAL GROUP DISASSEMBLY422
PINION GROUP DISASSEMBLY423
ASSEMBLY425
PINION GROUP ASSEMBLY425
DIFFERENTIAL GROUP ASSEMBLY428
BRAKE FLANGE AND DIFFERENTIAL HOUSING ASSEMBLY429
BRAKE CONTROL GROUP ASSEMBLY434
WORK EQUIPMENT444
FRONT BUCKET BOOM-RAISING CYLINDER444
REMOVAL444
INSTALLATION445
FRONT BUCKET TILT CYLINDERS446
REMOVAL446
INSTALLATION447
FRONT BUCKET448
REMOVAL448
INSTALLATION448
FRONT WORK EQUIPMENT449
REMOVAL449
INSTALLATION450
BACKHOE CONTROL VALVE451
REMOVAL451
INSTALLATION452
BACKHOE BOOM CYLINDER453
REMOVAL453
INSTALLATION454
BACKHOE ARM CYLINDER455
REMOVAL455
INSTALLATION455
TELESCOPIC ARM CYLINDER456
REMOVAL456
INSTALLATION456
BACKHOE BUCKET CYLINDER457
REMOVAL457
INSTALLATION458
OUTRIGGER CYLINDERS459
REMOVAL459
INSTALLATION459
BACKHOE SWING CYLINDERS460
REMOVAL460
INSTALLATION460
CYLINDERS462
DISASSEMBLY462
FRONT BUCKET RAISE AND TILT, BOOM, ARM, BUCKET, OUTRIGGERS462
ASSEMBLY464
FRONT BUCKET RAISE AND TILT, BOOM, ARM, BUCKET, OUTRIGGERS AND TELESCOPIC ARM464
BOOM SWING CYLINDER468
DISASSEMBLY468
ASSEMBLY469
BOOM SAFETY CYLINDER471
REMOVAL471
INSTALLATION472
BACKHOE WORKING EQUIPMENT473
REMOVAL473
INSTALLATION474
BACKHOE BUCKET474
REMOVAL474
INSTALLATION474
BACKHOE ARM475
REMOVAL475
INSTALLATION475
TELESCOPIC ARM, COMPLETE476
REMOVAL476
INSTALLATION476
2nd ARM477
REMOVAL477
INSTALLATION477
2nd ARM GUIDES478
REMOVAL478
INSTALLATION478
BACKHOE BOOM479
REMOVAL479
INSTALLATION479
BACKHOE SWING BRACKET480
REMOVAL480
INSTALLATION480
BACKHOE OUTRIGGERS481
REMOVAL481
INSTALLATION482
90 OTHERS483
HYDRAULIC CIRCUIT (CONTROL VALVE)485
HYDRAULIC CIRCUIT (PUMP AND TANK)487
ELECTRICAL SCHEMATIC (Sheet 1 of 3)489
ELECTRICAL SCHEMATIC (Sheet 2 of 3)491
ELECTRICAL SCHEMATIC (Sheet 3 of 3)493
AIR CONDITIONER CIRCUIT495

IMAGES PREVIEW OF THE MANUAL:

S.M 15/12/24