Komatsu PC27R-8 Deluxe Hydraulic Excavator Shop Manual WEBM003800 – PDF

Description

Komatsu PC27R-8 Deluxe Hydraulic Excavator Shop Manual WEBM003800 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC27R-8 Deluxe Hydraulic Excavator Shop Manual WEBM003800 – PDF DOWNLOAD

Language : English
Pages : 264
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Komatsu PC27R-8 Deluxe Hydraulic Excavator Shop Manual WEBM003800 – PDF DOWNLOAD

SERIAL NUMBER
PC27R-8 F31103 and up

MAIN MENU 0
COVER 1
CONTENTS 3
SAFETY 7
FOREWORD 9
HOW TO READ THE SHOP MANUAL 10
HOISTING INSTRUCTIONS 11
STANDARD TIGHTENING TORQUE 12
COATING MATERIALS 14
ELECTRIC WIRE CODE 15
WEIGHT TABLE 16
TABLE OF OIL COOLANT QUANTITIES 17
10 STRUCTURE AND FUNCTION 21
POWER TRAIN 22
SWING CIRCLE 23
SWING MACHINERY 24
FINAL DRIVE 25
TRACK FRAME 26
RECOIL SPRING 27
CARRIER ROLLER 28
TRACK ROLLER 28
STEEL SHOE 29
HYDRAULIC SYSTEM 31
HYDRAULIC CIRCUIT DIAGRAM 33
HYDRAULIC PUMP 34
CONTROL VALVE 54
CLSS 62
SWIVEL JOINT 79
SWING MOTOR 80
TRAVEL MOTOR 82
CYLINDER 84
ACCUMULATOR 87
PPC VALVE 88
SOLENOID VALVE 95
ELECTRICAL DIAGRAM (1/3) 97
ELECTRICAL DIAGRAM (2/3) 99
ELECTRICAL DIAGRAM (3/3)101
20 TESTING AND ADJUSTING105
NORMAL OR STANDARD TECHNICAL DATA106
SPECIAL TOOLS117
CHECKING THE ENGINE SPEED119
ADJUSTMENT OF VALVE CLEARANCE120
MEASUREMENT OF THE COMPRESSION PRESSURE121
CONTROL AND ADJUSTMENT OF THE TENSION OF THE FAN BELT122
CONTROL AND ADJUSTMENT OF THE INJECTION TIMING123
CONTROL AND ADJUSTMENT OF THE ACCELERATOR STROKE125
ADJUSTMENT OF THE STROKE OF THE BLADE COMMAND LEVER126
ADJUSTING THE FLEXIBLE CABLES127
CONTROL AND ADJUSTMENT OF THE STROKE OF THE TRAVEL LEVER128
ADJUSTMENT OF THE STROKE OF THE BOOM SWING COMMAND PEDAL129
ADJUSTMENT OF THE PPC VALVE CLEARANCE130
ADJUSTMENT OF THE RUBBER PAD AND SAFETY MICROSWITCH FOR SERVO-CONTROL ENGAGEMENT131
CONTROL AND ADJUSTMENT OF THE TRACK-SHOE TENSION132
CONTROL AND REGULATION OF THE PRESSURES IN THE HYDRAULIC CIRCUITS133
CONTROL AND REGULATION OF THE LS DIFFERENTIAL PRESSURE AND ADJUSTMENT OF THE LS VALVE136
REGULATION OF THE PC VALVE138
CONTROL AND REGULATION OF THE SERVO-CONTROL POWER SUPPLY139
ELIMINATION OF RESIDUAL PRESSURES – PRESSURIATION OF THE TANK140
BLEEDING AIR FROM THE HYDRAULIC CIRCUITS141
CONTROL OF HYDRAULIC DRIFT – ANALYSIS OF THE CAUSES OF A DRIFT143
CHECKING FOR ANY LEAKAGES INSIDE THE WORKING EQUIPMENT CYLINDERS149
CHECKING FOR ANY LEAKAGES INSIDE THE SWING MOTOR150
METHODS FOR TESTING FOR LEAKAGES INSIDE THE SWIVEL JOINT151
30 REMOVAL AND INSTALLATION155
HOW TO READ THE MANUAL157
PRECAUTIONS TO BE TAKEN WHILE WORKING158
SPECIAL TOOLS159
STARTER MOTOR161
REMOVAL161
INSTALLATION161
ALTERNATOR162
REMOVAL162
INSTALLATION162
INJECTION PUMP163
REMOVAL163
INSTALLATION164
NOZZLE HOLDER165
REMOVAL165
INSTALLATION165
WATER COOLANT PUMP166
REMOVAL166
INSTALLATION167
CYLINDER HEAD168
REMOVAL168
INSTALLATION169
ENGINE HOOD170
REMOVAL170
INSTALLATION170
CANOPY171
REMOVAL171
INSTALLATION171
CAB172
REMOVAL172
INSTALLATION172
HEATING FAN173
REMOVAL173
INSTALLATION174
COUNTERWEIGHT175
REMOVAL175
INSTALLATION175
FUEL TANK176
REMOVAL176
INSTALLATION176
HYDRAULIC TANK177
REMOVAL177
INSTALLATION178
OIL-COOLER – RADIATOR GROUP179
REMOVAL179
INSTALLATION180
ENGINE-PUMP GROUP181
REMOVAL181
INSTALLATION183
PUMP184
REMOVAL184
INSTALLATION184
ENGINE-PUMP COUPLING185
REMOVAL185
INSTALLATION185
LATERAL LOWER COVER186
REMOVAL186
INSTALLATION186
INNER CONTROL VALVE BOX COVER187
REMOVAL187
INSTALLATION187
CONTROL VALVE188
REMOVAL188
INSTALLATION189
LEFT-HAND PPC VALVE (ARM-BUCKET)190
REMOVAL190
INSTALLATION190
RIGHT-HAND PPC VALVE (BOOM-BUCKET)191
REMOVAL191
INSTALLATION191
SERVOCNTROL SOLENOID GROUP192
REMOVAL192
INSTALLATION192
PLATFORM193
REMOVAL193
INSTALLATION195
SWIVEL JOINT196
REMOVAL196
INSTALLATION196
SWING MACHINERY197
REMOVAL197
INSTALLATION198
REVOLVING FRAME199
REMOVAL199
INSTALLATION200
SWING CIRCLE201
REMOVAL201
INSTALLATION201
RUBBER TRACK SHOES202
REMOVAL202
INSTALLATION202
STEEL TRACK SHOES203
REMOVAL203
INSTALLATION203
SPROCKET WHEEL204
REMOVAL204
INSTALLATION204
FINAL DRIVE205
REMOVAL205
INSTALLATION205
IDLER AND RECOIL SPRING206
REMOVAL206
INSTALLATION206
SPRING RECOIL AND THRUST CYLINDER GROUPS207
DISASSEMBLY207
ASSEMBLY207
IDLER208
DISASSEMBLY208
ASSEMBLY208
TRACK ROLLERS209
REMOVAL209
INSTALLATION209
BOOM CYLINDER210
REMOVAL210
INSTALLATION211
ARM CYLINDER212
REMOVAL212
INSTALLATION212
BUCKET CYLINDER213
REMOVAL213
INSTALLATION213
BOOM SWING CYLINDER214
REMOVAL214
INSTALLATION215
BLADE CYLINDER216
REMOVAL216
INSTALLATION216
WORK EQUIPMENT CYLINDERS217
DISASSEMBLY217
ASSEMBLY219
UPPER WORK EQUIPMENT223
REMOVAL223
INSTALLATION224
ARM225
REMOVAL225
INSTALLATION226
ARM ASSEMBLY227
REMOVAL227
INSTALLATION227
BOOM228
REMOVAL228
INSTALLATION229
BOOM SWING SUPPORT230
REMOVAL230
INSTALLATION230
BLADE231
REMOVAL231
INSTALLATION231
40 STANDARD MAINTENANCE235
SWING CIRCLE236
SWING MACHINERY237
FINAL DRIVE238
SPROCKET239
TRACK FRAME AND RECOIL SPRING240
IDLER241
CARRIER ROLLER242
TRACK ROLLER243
TRACK SHOE244
HYDRAULIC PUMP246
CONTROL VALVE247
SWIVEL JOINT253
SWING MOTOR254
TRAVEL MOTOR256
PPC VALVE (FOR BOOM, ARM, BUCKET, SWING)258
PPC VALVE (FOR HAMMER)259
CYLINDER260
WORK EQUIPMENT262

DESCRIPTION:

Komatsu PC27R-8 Deluxe Hydraulic Excavator Shop Manual WEBM003800 – PDF DOWNLOAD

SERIAL NUMBER
PC27R-8 F31103 and up

GENERAL PRECAUTIONS
Mistakes in operation extremely dangerous. Read all the Operation and Maintenance Manual care- fully BEFORE operating the machine.
1. Before carrying out any greasing or repairs, read all the precautions written on the decals which are suck on the machine.
2. When carrying out any operation, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing.
• Always wear safety glasses when hitting parts with a hammer.
• Always wear safety glasses when grinding parts with a grinder, etc.
3. If welding repairs are needed, always have a trained, experienced welder carry out the work. When carrying out welding work, always wear welding gloves, apron, glasses, cap and other clothes suited for welding work.
4. When carrying out any operation with two or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the operation. Before starting work, hang UNDER REPAIR signs on the controls in the operator’s compartment.
5. Keep all tools in good condition and learn  the correct way to use them.
6. Decide a place in the repair workshop to keep
tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt or oil on the floor.
Smoke only in the areas provided for smoking. Never smoke while working.

PREPARATIONS FOR WORK
7. Before adding or making any repairs, park the ma- chine on hard, level ground, and block the tracks to prevent the machine from moving.
8. Before starting work, lower blade, bucket or any other work equipment to the ground. If this is not possible, use blocks to prevent the work equipment from falling down. In addition, be sure to lock all the control levers and hang warning sign on them.
9. When disassembling or assembling, support the machine with blocks, jacks or stands before star- ting work.
10. Remove all mud and oil from the steps or other places used to get on and off the machine. Always use the handrails, ladders or steps when getting on or off the machine.
Never jump on or off the machine.
If it is impossible to use the handrails, ladders or steps, use a stand to provide safe footing.

G.B 13/12/24