Komatsu WB91R-2 WB93R-2 Avance Backhoe Loader Shop Manual WEBM000404 PDF

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Komatsu WB91R-2 WB93R-2 Avance Backhoe Loader Shop Manual WEBM000404 – PDF DOWNLOAD

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Komatsu WB91R-2 WB93R-2 Avance Backhoe Loader Shop Manual WEBM000404 – PDF DOWNLOAD

Language : English
Pages :504
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu WB91R-2 WB93R-2 Avance Backhoe Loader Shop Manual WEBM000404 – PDF DOWNLOAD

FOREWORD
This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator 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.
The manual is divided into chapters on each main group of components; these chapters are further divided into the
following sections.
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 AND ADJUSTING
This sections 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 WB91R-2 WB93R-2 Avance Backhoe Loader Shop Manual WEBM000404 – PDF DOWNLOAD

COVER 1
CONTENTS 3
LIST OF REVISED PAGES 5
SAFETY 7
FOREWORD 9
HOW TO READ THE SHOP MANUAL 10
HOISTING INSTRUCTIONS 11
STANDARD TIGHTENING TORQUE 12
COATI NG MATERI ALS 14
ELECTRIC 15
WEIGHT TABLE 16
TABLE OF OIL AND COOLANT QUANTITIES 17
CONVERSION TABLE 19
10 STRUCTURE AND FUNCTION 29
POWER TRAIN 30
TRANSMISSION (4WD) 32
TRANSMISSION 34
DRIVE SHAFTS 37
CONTROL VALVE BLOCK 39
FRONT AXLE 40
REAR AXLE 43
HYDRAULIC PUMP 48
STEERING UNIT 69
HYDRAULIC CIRCUIT 71
SHOVEL CONTROL VALVE 72
BACKHOE CONTROL VALVE 78
CLSS 85
SOLENOID VALVE 99
SAFETY VALVE100
BRAKE PUMP102
SHOVEL CYLINDERS103
BACKHOE CYLINDERS104
AIR-CONDITIONING UNIT108
HOW THE AIR-CONDITIONING UNIT FUNCTIONS109
ELECTRICAL DIAGRAM111
ELECTRICAL DIAGRAM (AIR CONDITIONING)123
20 TESTING AND ADJUSTMENTS127
NORMAL OR STANDARD TECHNICAL DATA128
SPECIAL TOOLS152
MEASURING ENGINE SPEED153
ADJUSTING VALVE CLEARANCE154
MEASURING COMPRESSION PRESSURE155
TESTING AND ADJUSTING FUEL INJECTION TIMING156
CHECKING AND TIGHTENING THE FAN – BELT158
CHECKING AND TIGHTENING THE COMPRESSOR FAN – BELT159
MEASURING ACCELERATOR PEDAL OPERATING TRAVEL AND ACCELERATOR LEVER160
ADJUSTING BRAKE PEDAL TRAVEL, BRAKE ALIGNMENT, MICROSWITCHES162
AIR BLEEDING – RELEASING RESIDUAL PRESSURE163
CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT166
TESTING AND ADJUSTING OF LOAD SENSING SIGNAL (LS VALVE)172
TESTING AND ADJUSTING OF UNLOADING VALVE173
CHECKING UNLOADING VALVE FUNCTIONALITY174
TESTING PRIORITY VALVE OPERATION175
TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE176
TESTING BRAKE SYSTEM177
CONTROL OF THE ENGINE SPEED UNDER LOAD179
TESTING PRESSURES IN THE POWER TRAIN GROUP181
TESTING THE CORRECT FUNCTIONING OF THE POWER TRAIN CLUTCHES183
ADJUSTING THE SENSOR FOR RETURN TO DIG DEVICE184
ANALYSIS OF CAUSES HYDRAULIC DRIFT185
TESTING THE AIR-CONDITIONING UNIT190
EMPTYING THE AIR-CONDITIONING UNIT192
TROUBLESHOOTING193
FRONT AXLE TROUBLESHOOTING194
REAR AXLE TROUBLESHOOTING199
TRANSMISSION TROUBLESHOOTING204
30 REMOVAL AND INSTALLATION209
HOW TO READ THE MANUAL211
PRECAUTIONS TO BE TAKEN WHILE WORKING212
SPECIAL TOOLS213
STARTING MOTOR217
ALTERNATOR218
AIR-CONDITIONING UNIT COMPRESSOR220
INJECTION PUMP222
INJECTION NOZZLES226
THERMOSTAT227
COOLING LIQUID PUMP228
TURBOCOMPRESSOR230
CYLINDER HEAD232
FRONT COUNTERWEIGHT236
RADIATOR GROUP237
CONDENSER240
MUFFLER241
EXHAUST PIPE242
ENGINE HOOD243
CAB245
HEAT AND AIR-CONDITIONING GROUP249
FUEL TANK251
HYDRAULIC OIL TANK252
ENGINE-GEARBOX-PUMP GROUP253
PISTON PUMP259
TRANSMISSION261
OVERHAULING THE TRANSMISSION265
CONVERTOR343
TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP344
STEERING UNIT345
WORKING BRAKE PUMP GROUP346
FRONT WORKING EQUIPMENT CONTROL VALVE347
FRONT AND BACKHOE CONTROL VALVE348
FRONT AXLE362
REAR AXLE389
FRONT BUCKET BOOM-RAISING CYLINDER425
FRONT BUCKET TILT CYLINDERS426
FRONT BUCKET427
FRONT WORKING EQUIPMENT428
BACKHOE CONTROL VALVE430
BACKHOE BOOM CYLINDER432
BACKHOE ARM CYLINDER433
JIG ARM CYLINDER434
BACKHOE BUCKET CYLINDER435
OUTRIGGER CYLINDERS436
BACKHOE SWING CYLINDERS438
BACKHOE BACKFRAME LOCK CYLINDER439
CYLINDERS440
BOOM SWING CYLINDER446
BACKHOE BACKFRAME LOCK CYLINDER449
BOOM SAFETY CYLINDER450
BACKHOE WORKING EQUIPMENT451
BACKHOE BUCKET452
ARM453
JIG ARM454
2nd ARM455
2nd ARM GUIDES456
BACKHOE BOOM457
BACKHOE SWING BRACKET458
BACKHOE BACKFRAME459
40 STANDARD MAINTENANCE463
TRANSMISSION464
FRONT AXLE469
REAR AXLE472
HYDRAULIC PUMP476
2-SPOOL CONTROL VALVE478
3-SPOOL CONTROL VALVE480
3-SPOOL CONTROL VALVE (With Returnto Dig)482
6-SPOOL CONTROL VALVE484
7-SPOOL CONTROL VALVE487
8-SPOOL CONTROL VALVE489
BRAKE PUMP491
SHOVEL CYLINDERS493
BACKHOE CYLINDERS494
FRONT WORKING EQUIPMENT498
SWING BRACKET500
BACKHOE WORKING EQUIPMENT502

IMAGES PREVIEW OF THE MANUAL:

S.M 22/12/24