Komatsu PC75R-2 Hydraulic Excavator Shop Manual WEBD002600 – PDF DOWNLOAD

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Komatsu PC75R-2 Hydraulic Excavator Shop Manual WEBD002600 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC75R-2 Hydraulic Excavator Shop Manual WEBD002600 – PDF DOWNLOAD

Language : English
Pages :346
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu PC75R-2 Hydraulic Excavator Shop Manual WEBD002600 – PDF DOWNLOAD

SERIAL NUMBERS PC75R-2-22E5200001

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 PC75R-2 Hydraulic Excavator Shop Manual WEBD002600 – PDF DOWNLOAD

SERIAL NUMBERS PC75R-2-22E5200001

MAIN MENU 0
COVER 1
CONTENTS 2
FOREWARD 5
FOREWARD 7
HOW TO READ THE MANUAL 8
HOISTING INSTRUCTIONS 9
STANDARD TIGHTENING TORQUE 10
COATING MATERIALS 12
ELECTRIC WIRE CODE 13
WEIGHT TABLE 14
TABLE OF OIL AND COOLANT QUANTITIES 15
10 STRUCTURE AND FUNCTION 18
PTO 19
POWER TRAIN 20
TRACK FRAME 21
IDLER AND RECOIL SPRING 22
TRACK ROLLER 23
CARRIER ROLLER 23
TRACK SHOE 24
SWING CIRCLE 25
SWING MACHINERY 26
HYDRAULIC CIRCUIT DIAGRAM (STANDARD) 27
HYDRAULIC CIRCUIT DIAGRAM (2-PIECE BOOM) 28
HYDRAULIC PUMP 29
9-SPOOL CONTROL VALVE (STANDARD) 53
10-SPOOL CONTROL VALVE (STANDARD + 2-PIECE BOOM) 55
SWING MOTOR 83
CENTER SWIVEL JOINT 87
TRAVEL MOTOR 88
PARKING BRAKE 90
BRAKE VALVE 91
TRAVEL MOTOR 93
REDUCTION GEAR 95
CYLINDERS 96
SERVOCONTROL FEED UNIT 98
ACCUMULATOR103
PPC VALVE104
PPC VALVE (BLADE, BOOM SWING, 2-PIECE BOOM)108
TRAVEL PPC VALVE111
BOOM AND ARM SAFETY VALVE116
BLADE SAFETY VALVE117
2-PIECE BOOM SAFETY VALVE118
OVERLOAD SENSOR SWITCH119
SOLENOID VALVE120
ELECTRICAL DIAGRAM (1/3)122
ELECTRICAL DIAGRAM (2/3)123
ELECTRICAL DIAGRAM (3/3)124
20 TESTING AND ADJUSTMENTS126
NORMAL OR STANDARD TECHNICAL DATA127
EQUIPMENT FOR TESTING, ADJUSTING, AND IDENTIFING FAULTS143
MEASURING THE ENGINE SPEED144
ADJUSTING VALVE CLEARANCE145
MEASURING COMPRESSION PRESSURE146
TESTING AND ADJUSTING FUEL INJECTION TIMING147
TESTING AND ADJUSTING FAN BELT TENSION149
ADJUSTING THE STROKE OF THE ACCELERATOR LEVER150
ADJUSTING PPC VALVES CLEARANCE151
ADJUSTING THE SAFETY MICROSWITCH152
MEASURING THE SWING CIRCLE AXIAL CLEARANCE153
TESTING AND ADJUSTING TRACK-SHOE TENSION154
AIR BLEEDING FROM HYDRAULIC CIRCUITS 155
RELEASING RESIDUAL PRESSURE FROM THE CIRCUITS158
CHECKING AND REGULATING PRESSURE IN THE HYDRAULIC CIRCUITS159
TESTING AND SETTING OF MAIN VALVES160
ADJUSTING PC VALVE 162
MEASURNG LS DIFFERENTIAL PRESSURE AND ADJUSTING LS VALVE163
CHECKING AND ADJUSTING PRESSURES IN THE SERVO CONTROL FEED UNIT165
MEASURING PUMPS DELIVERY AND FLOW CONTROL STARTING POINT PUMP P1166
MEASURING TRAVEL DEVIATION168
ADJUSTING THE MAXIMUM SPEED OF THE TRAVEL MOTORS169
MEASURING INNER OIL LEAKAGE OF TRAVEL MOTOR170
ADJUSTING BOOM AND ARM SAFETY VALUES171
ADJUSTING 2ND BOOM SAFETY VALUES172
MEASURING AND SETTING OF PRESSURE SWITCH SIGNAL OVERLOAD OPEARTION173
MEASUREMENT OF INTERNAL OIL LEAKAGES IN THE SWING MOTOR174
CHECKING FOR LEAKAGES INSIDE THE SWIVEL JOINT175
ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS177
30 DISASSEMBLY AND ASSEMBLY186
HOW TO READ THE MANUAL188
PRECAUTIONS TO BE TAKEN WHILE WORKING189
SPECIAL TOOLS190
STARTER MOTOR192
REMOVAL AND INSTALLATION192
ALTERNATOR193
REMOVAL AND INSTALLATION193
INJECTION PUMP194
REMOVAL194
INSTALLATION197
NOZZLE HOLDER198
REMOVAL AND INSTALLATION198
CYLINDER HEAD199
REMOVAL 199
NSTALLATION201
SEAT202
REMOVAL AND INSTALLATION202
CABIN203
REMOVAL AND INSTALLATION203
ENGINE HOOD204
REMOVAL AND INSTALLATION204
FRONT HOOD205
REMOVAL AND INSTALLATION205
HEATING FAN206
REMOVAL AND INSTALLATION206
RADIATOR207
REMOVAL AND INSTALLATION207
HYDRAULIC OIL COOLER208
REMOVAL AND INSTALLATION208
FUEL TANK209
REMOVAL209
INSTALLATION210
HYDRAULIC OIL TANK211
REMOVAL AND INSTALLATION211
ENGINE-PUMP GROUP212
REMOVAL212
INSTALLATION215
PUMP GROUP216
REMOVAL216
INSTALLATION217
ENGINE-PUMP COUPLING JOINT218
REMOVAL AND INSTALLATION218
MAIN PUMP INPUT SHAFT OIL SEAL219
REMOVAL AND INSTALLATION219
GEAR-PUMP220
REMOVAL AND INSTALLATION220
SWIVEL JOINT221
REMOVAL AND INSTALLATION221
SWING MOTOR222
REMOVAL AND INSTALLATION222
SWING MACHINERY223
REMOVAL AND INSTALLATION223
DISASSEMBLY224
ASSEMBLY227
CONTROL VALVE230
REMOVAL AND INSTALLATION230
REVOLVING FRAME231
REMOVAL231
INSTALLATION232
COUNTERWEIGHT233
REMOVAL AND INSTALLATION233
SWING CIRCLE234
REMOVAL AND INSTALLATION234
TRACK SHOES235
REMOVAL AND INSTALLATION235
SPROCKET236
REMOVAL AND INSTALLATION236
TRAVEL MOTOR237
REMOVAL AND INSTALLATION237
DISSASSEMBLY238
ASSEMBLY253
BALL BEARING PRELOAD268
ADJUSTING268
AXIAL CLEARANCE ON TAPPERED ROLLER BEARINGS269
ADJUSTING269
IDLER AND RECOIL SPRING270
REMOVAL AND INSTALLATION270
IDLER271
DISASSEMBLY AND ASSEMBLY271
RECOIL SPRING GROUP272
DISASSEMBLY AND ASSEMBLY272
TRACK ROLLER273
REMOVAL AND INSTALLATION273
CARRIER ROLLER274
REMOVAL AND INSTALLATION274
RH PPC VALVE (BOOM-BUCKET)275
REMOVAL 275
INSTALLATION276
LH PPC VALVE (ARM-SWING)277
REMOVAL 277
INSTALLATION278
BLADE PPC VALVE279
REMOVAL AND INSTALLATION279
TRAVEL PPC VALVE280
REMOVAL AND INSTALLATION280
BOOM SWING PPC VALVE281
REMOVAL AND INSTALLATION281
BOOM CYCLINDER (1-PIECE BOOM)282
REMOVAL AND INSTALLATION282
BOOM CYCLINDER (2-PIECE BOOM)283
REMOVAL 283
INSTALLATION284
2-PIECE BOOM CYLINDER285
REMOVAL 285
INSTALLATION286
ARM CYLINDER287
REMOVAL AND INSTALLATION287
BUCKET CYLINDER288
REMOVAL AND INSTALLATION288
BOOM SWING CYLINDER289
REMOVAL AND INSTALLATION289
BLADE CYLINDER290
REMOVAL AND INSTALLATION290
WORK EQUIPMENT CYLINDER291
DISASSEMBLY291
ASSEMBLY292
WORK EQUIPMENT (1-PIECE BOOM VERSION)296
REMOVAL AND INSTALLATION296
WORK EQUIPMENT (2-PIECE BOOM VERSION)297
REMOVAL297
INSTALLATION298
BUCKET299
REMOVAL AND INSTALLATION299
ARM300
REMOVAL300
INSTALLATION302
2-PIECE BOOM303
REMOVAL303
INSTALLATION304
BOOM (1-PIECE BOOM VERSION)305
REMOVAL AND INSTALLATION305
BOOM (2-PIECE BOOM VERSION)306
REMOVAL306
INSTALLATION307
SWING SUPPORT308
REMOVAL AND INSTALLATION308
BLADE309
REMOVAL AND INSTALLATION309
40 MAINTENANCE STANDARD311
PTO312
SWING CIRCLE313
TRACK FRAME314
IDLER315
CARRIER ROLLER316
TRACK ROLLER317
TRACK SHOE318
SPROCKET319
SWING MACHINERY320
HYDRAULIC PUMP321
CONTROL VALVE322
SWING MOTOR332
SWIEVEL JOINT333
TRAVEL MOTOR334
SERVOCONTROL FEED UNIT336
TRAVEL PPC VALVE337
PPC VALVE338
BLADE SAFETY VALVE340
CYLINDERS341
WORK EQUIPMENT (1-PIECE BOOM)343
WORK EQUIPMENT (2-PIECE BOOM)345

IMAGES PREVIEW OF THE MANUAL:

S.M 24/12/24