Komatsu PC20R-8 PC27R-8 Hydraulic Excavator Shop Manual WEB000201 – PDF DOWNLOAD

Description

Komatsu PC20R-8 PC27R-8 Hydraulic Excavator Shop Manual WEB000201 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC20R-8 PC27R-8 Hydraulic Excavator Shop Manual WEB000201 – PDF DOWNLOAD

Language : English
Pages :298
Downloadable : Yes
File Type : PDF

DESCRIPTION:

Komatsu PC20R-8 PC27R-8 Hydraulic Excavator Shop Manual WEB000201 – PDF DOWNLOAD

FOREWORD
This shop manual has been prepared as an aid to improve the quality of repairs by giving the operator an ac- curate 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 understan- ding 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 PC20R-8 PC27R-8 Hydraulic Excavator Shop Manual WEB000201 – 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
COATING MATERIALS 13
ELECTRIC WIRE CODE 14
WEIGHT TABLE 15
TABLE OF OIL AND COOLANT QUANTITIES 16
10STRUCTURE AND FUNCTION 19
POWER TRAIN 20
SWING CIRCLE 22
SWING MACHINERY PC27R-8 24
FINAL DRIVE 25
TRACK FRAME 26
RECOIL SPRING 28
CARRIER ROLLER PC27R-8 29
TRACK ROLLER 29
STEEL SHOE 30
HYDRAULIC SYSTEM PC20R-8 31
HYDRAULIC SYSTEM PC27R-8 33
HYDRAULIC CIRCUIT DIAGRAM PC20R-8 35
HYDRAULIC CIRCUIT DIAGRAM PC27R-8 37
HYDRAULIC PUMP PC20R-8 38
HYDRAULIC PUMP PC27R-8 42
TCC VALVE, LS VALVE, SERVO PISTON 48
CONTROL VALVE 62
CLSS 70
SWIVEL JOINT 87
SWING MOTOR 88
TRAVEL MOTOR 92
CYLINDER 95
ACCUMULATOR 99
PPC VALVE100
PPC VALVE104
SOLENOID VALVE107
ELECTRICAL DIAGRAM (1/3)109
ELECTRICAL DIAGRAM (2/3)111
ELECTRICAL DIAGRAM (3/3)113
20TESTING AND ADJUSTMENT117
NORMAL OR STANDARD TECHNICAL DATA118
SPECIAL TOOLS140
CHECKING THE ENGINE SPEED141
ADJUSTMENT OF VALVE CLEARANCE142
MEASUREMENT OF THE COMPRESSION PRESSURE143
CONTROL AND ADJUSTMENT OF THE TENSION OF THE FAN BELT144
CONTROL AND ADJUSTMENT OF THE INJECTION TIMING145
CONTROL AND ADJUSTMENT OF THE ACCELERATOR STROKE147
ADJUSTMENT OF THE STROKE OF THE BLADE COMMAND LEVER148
ADJUSTING THE FLEXIBLE CABLES149
CONTROL AND ADJUSTMENT OF THE STROKE OF THE TRAVEL LEVER150
ADJUSTMENT OF THE STROKE OF THE BOOM SWING COMMAND PEDAL151
ADJUSTMENT OF THE PPC VALVE CLEARANCES152
ADJUSTMENT OF THE RUBBER PAD AND SAFETY MICROSWITCH FOR SERVO-CONTROL ENGAGEMENT153
CONTROL AND ADJUSTMENT OF THE TRACK-SHOE TENSION154
CONTROL AND REGULATION OF THE PRESSURES IN THE HYDRAULIC CIRCUITS155
CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE (PC20R-8)160
REGULATION OF THE PC VALVE (PC20R-8)162
CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE (PC27R-8)163
REGULATION OF THE PC VALVE (PC27R-8)165
CONTROL AND REGULATION OF THE SERVO-CONTROL POWER SUPPLY166
ELIMINATION OF RESIDUAL PRESSURES – PRESSURISATION OF THE TANK167
BLEEDING AIR FROM THE HYDRAULIC CIRCUITS168
CONTROL OF HYDRAULIC DRIFTS – ANALYSIS OF THE CAUSES OF A DRIFT170
CHECKING FOR ANY LEAKAGES INSIDE THE WORKING EQUIPMENT CYLINDERS176
CHECKING FOR ANY LEAKAGES INSIDE THE SWING MOTOR177
METHODS FOR TESTING FOR LEAKAGES INSIDE THE SWIVEL JOINT178
30REMOVAL AND INSTALLATION183
HOW TO READ THE MANUAL185
PRECAUTIONS TO BE TAKEN WHILE WORKING186
SPECIAL TOOLS187
STARTER MOTOR189
ALTERNATOR190
INJECTION PUMP191
NOZZLE HOLDER193
WATER COOLANT PUMP194
CYLINDER HEAD196
ENGINE HOOD198
CANOPY199
CAB200
HEATING FAN201
COUNTERWEIGHT203
FUEL TANK204
HYDRAULIC TANK205
OIL-COOLER – RADIATOR GROUP207
ENGINE-PUMP GROUP209
PUMP212
ENGINE-PUMP COUPLING213
LATERAL LOWER COVER214
INNER CONTROL VALVE BOX COVER215
CONTROL VALVE216
LEFT-HAND PPC VALVE (ARM-BUCKET)218
RIGHT-HAND PPC VALVE (BOOM-BUCKET)219
SERVOCONTROL SOLENOID GROUP220
PLATFORM221
SWIVEL JOINT224
SWING MACHINERY225
REVOLVING FRAME228
SWING CIRCLE230
RUBBER TRACK SHOES231
STEEL TRACK-SHOES232
SPROCKET WHEEL233
FINAL DRIVE234
IDLER AND RECOIL SPRING235
SPRING RECOIL AND THRUST CYLINDER GROUPS236
IDLER237
TRACK ROLLERS238
BOOM CYLINDER239
ARM CYLINDER241
BUCKET CYLINDER242
BOOM SWING CYLINDER243
BLADE CYLINDER245
WORK EQUIPMENT CYLINDERS246
UPPER WORK EQUIPMENT252
BUCKET254
ARM255
ARM ASSEMBLY257
BOOM258
BOOM SWING SUPPORT260
BLADE261
40STANDARD MAINTENANCE265
SWING CIRCLE266
SWING MACHINERY PC27R-8267
FINAL DRIVE268
SPROCKET269
TRACK FRAME AND RECOIL SPRING270
IDLER271
CARRIER ROLLER PC27R-8272
TRACK ROLLER273
TRACK SHOE274
HYDRAULIC PUMP276
CONTROL VALVE278
SWIVEL JOINT284
SWING MOTOR285
TRAVEL MOTOR288
PPC VALVE290
CYLINDER292
WORK EQUIPMENT PC20R-8294
WORK EQUIPMENT PC27R-8296

IMAGES PREVIEW OF THE MANUAL:

S.M 13/12/24