Komatsu PC80-3 PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302 PDF

Description

Komatsu PC80-3 PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC80-3 PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302 – PDF DOWNLOAD 

Language : English
Pages : 386
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Komatsu PC80-3 PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302 – PDF DOWNLOAD 

COVER 1
CONTENTS 2
10 ENGINE 15
11 STRUCTURE AND FUNCTION 15
ENGINE MOUNT 16
RADIATOR 17
PTO 18
FUEL TANK AND PIPING 19
ENGINE CONTROL 20
AUTO-DECELERATION SYSTEM (IF EQUIPPED) 21
12 TESTING AND ADJUSTING 29
STANDARD FOR TESTING AND ADJUSTING 30
TESTING AND ADJUSTING TOOL LIST 30
ADJUSTING VALVE CLEARANCE 31
MEASURING EXHAUST GAS COLOR 32
MEASURING COMPRESSION PRESSURE 33
MEASURING BLOW-BY PRESSURE 34
ADJUSTING FUEL INJECTION TIMING 35
TESTING AND ADJUSTING FAN BELT TENSION 36
ADJUSTING FUEL CONTROL LEVER 37
ADJUSTING AUTO-DECELERATION SYSTEM 38
13 DISASSEMBLY AND ASSEMBLY 39
STARTING MOTOR 40
REMOVAL 40
INSTALLATION 40
ALTERNATOR 40
REMOVAL 40
INSTALLATION 40
AUTO-DECELERATION CYLINDER 41
REMOVAL 41
INSTALLATION 41
FUEL INJECTION 42
REMOVAL 42
INSTALLATION 42
ENGINE OIL COOLER 43
REMOVAL 43
INSTALLATION 43
FAN AND FAN PULLEY 43
REMOVAL 43
INSTALLATION 43
WATER PUMP 44
REMOVAL 44
INSTALLATION 44
THERMOSTAT 45
REMOVAL 45
INSTALLATION 45
NOZZLE HOLDER 46
REMOVAL 46
INSTALLATION 46
CYLINDER HEAD 47
REMOVAL 47
INSTALLATION 49
HYDRAULIC OIL COOLER 51
REMOVAL 51
INSTALLATION 51
RADIATOR AND HYDRAULIC OIL COOLER 52
REMOVAL 52
INSTALLATION 53
ENGINE 54
REMOVAL 54
INSTALLATION 57
PTO 60
REMOVAL 60
INSTALLATION 60
DISASSEMBLY 61
ASSEMBLY 61
20 POWER TRAIN 62
21 STRUCTURE AND FUNCTION 62
POWER TRAIN 63
TRAVEL SYSTEM 64
TRAVEL CONTROL CIRCUIT SCHEMATICS 65
TRAVEL CONTROL CIRCUIT 66
TRAVEL MOTOR (WITH REDUCTION GEAR AND PARKING BRAKE) 67
CENTER SWIVEL JOINT 74
STRAIGHT TRAVEL SYSTEM 75
TRAVEL CONTROL 79
SWING SYSTEM 80
SWING CONTROL CIRCUIT SCHEMATICS 81
SWING CONTROL CIRCUIT 82
SWING MOTOR AND BRAKE VALVE 83
SWING MECHANICAL BRAKE (IF EQUIPPED) 89
SWING PRIORITY CIRCUIT 91
SWING MACHINERY 95
SWING CIRCLE 96
23 DISASSEMBLY AND ASSEMBLY 97
CENTER SWIVEL JOINT 98
REMOVAL 98
INSTALLATION 99
DISASSEMBLY 100
ASSEMBLY 100
TRAVEL MOTOR 101
REMOVAL 101
INSTALLATION 101
DISASSEMBLY 102
ASSEMBLY 110
SWING MOTOR 121
REMOVAL 121
INSTALLATION 121
DISASSEMBLY 122
ASSEMBLY 125
SWING CIRCLE 130
REMOVAL 130
INSTALLATION 131
SWING MACHINERY 132
REMOVAL 132
INSTALLATION 132
DISASSEMBLY 133
ASSEMBLY 136
SPROCKET 140
REMOVAL 140
INSTALLATION 140
24 MAINTENANCE STANDARD 141
SWING MACHINERY 142
SWING CIRCLE 143
SWING MOTOR 144
SPROCKET 145
30 UNDERCARRIAGE 146
31 STRUCTURE AND FUNCTION 146
TRACK FRAME 147
IDLER 149
RECOIL SPRING 149
TRACK ROLLER 150
CARRIER ROLLER 150
TRACK SHOE 151
33 DISASSEMBLY AND ASSEMBLY 153
RECOIL SPRING 154
REMOVAL 154
INSTALLATION 154
DISASSEMBLY 155
ASSEMBLY 155
IDLER 156
DISASSEMBLY 156
ASSEMBLY 156
TRACK ROLLER 157
REMOVAL 157
INSTALLATION 157
DISASSEMBLY 158
ASSEMBLY 158
CARRIER ROLLER 159
REMOVAL 159
INSTALLATION 159
DISASSEMBLY 160
ASSEMBLY 160
TRACK SHOE 161
REMOVAL 161
INSTALLATION 162
34 MAINTENANCE STANDARD 163
TRACK FRAME AND RECOIL SPRING 164
IDLER 165
TRACK ROLLER 166
CARRIER ROLLER 167
TRACK SHOE 168
60 HYDRAULIC SYSTEM 170
61 STRUCTURE AND FUNCTION 170
OUTLINE 171
HYDRAULIC PIPING 172
HYDRAULIC SCHEMATICS 173
HYDRAULIC CIRCUIT 175
HYDRAULIC TANK (WITH FUEL TANK) 178
HYDRAULIC PUMP 179
PC CONTROL SYSTEM 189
MODE SELECTION TYPE PC CONTROL SYSTEM (IF EQUIPPED) 192
OLSS SYSTEM (IF EQUIPPED) 197
CONTROL VALVE 215
HYDRAULIC CYLINDER 222
WORK EQUIPPENT CONTROL 225
WORK EQUIPPENT 232
62 TESTING AND ADJUSTING 233
TABLE OF JUDGEMENT STANDARD VALUE 234
TROUBLESHOOTING TOOLS 242
TESTING AND ADJUSTING MAIN RELIEF VALVE 243
TESTING AND ADJUSTING CHARGING PUMP RELIEF VALVE 244
TESTING CONTROL CIRCUIT PRESSURE 245
MEASURING DELIVERY OF PISTON PUMP 247
AIR BLEEDING 248
CHECKING FOR OIL LEAKAGE FROM SWIVEL JOINT 249
TROUBLESHOOTING 250
ELECTRICAL CIRCUIT 251
PISTON OF CONNECTORS FOR TROUBLESHOOTING 253
CONNECTION TABLE FOR CONNECTOR PINS 260
TROUBLESHOOTING PROCEDURE 264
CHECKS BEFORE TROUBLESHOOTING 265
JUDGEMENT TABLE 266
TROUBLESHOOTING CHART 271
E-1 WORK EQUIPMENT, SWING, TRAVEL SPEEDS EXTREMELY SLOW, OR LACK OF POWER NO CHANGE IN OUTPUT WHEN MODE SELECTOR SWITCH IS OPERATED 271
E-2 MACHINE DEVIATES EXCESSIVELY (DURING COMPOUND OPERATIONS) 273
E-2 MACHINE DEVIATES EXCESSIVELY (DURING COMPOUND OPERATIONS) MACHINE DEVIATES EXCESSIVELY (WHEN STARTING) 277
E-3 HYDRAULIC DRIFT OF SWING IS EXCESSIVE, OR UPPER STRUCTURE DOES NOT SWING 281
E-4 AUTO-DECELERATION DOES NOT WORK 285
H-1 MACHINE DEVIATES EXCESSIVELY (DEVIATES MORE THAN STANDARD WHEN ONLY TRAVEL SYSTEM IS USED, TRAVEL LEVER IS PULLED FULLY) 289
H-1 MACHINE DEVIATES EXCESSIVELY (DEVIATES MORE THAN STANDARD WHEN ONLY TRAVEL SYSTEM IS USED, TRAVEL LEVER AT FULL TRAVEL) 291
H-2 MACHINE DEVIATES EXCESSIVELY DURING COMPOUND OPERATION 293
H-3 MACHINE DEVIATES EXCESSIVELY WHEN STARTING 293
H-4 CONTROL LEVERS ARE EXTREMELY HEAVY 294
H-5 WORK EQUIPMENT, TRAVEL AND SWING START SUDDENLY DURING FINE CONTROL OPERATIONS 295
H-6 SPEEDS FOR WORK EQUIPMENT, SWING, AND TRAVEL ARE ALL EXTREMELY SLOW, OR THERE IS NO POWER 296
H-6 SPEEDS FOR WORK EQUIPMENT, SWING, AND TRAVEL ARE ALL EXTREMELY SLOW, OR THERE IS NO POWER (NO ABNORMALITY IN AUTO-DECELERATION) 298
H-7 SPEEDS FOR BOOM, ARM AND BUCKET ARE SLOW, OR THERE IS NO POWER (NO ABNORMALITY IN AUTO-DECELERATION) 302
H-8 ENGINE STALLS OR ENGINE SPEED DROPS DURING OPERATIONS 303
H-9 NO CHANGE IN OUTPUT WHEN MODE SELECTOR SWITCH IS OPERATED 304
H-10 AUTO-DECELERATION DOES NOT COME ON, OR DOES NOT GO OFF 305
H-11 ABNORMAL NOISE COMES FROM AROUND PUMP 306
H-12 SWING SPEED IS SLOW, OR OVERRUN WHEN STOPPING SWING IS EXCESSIVE 307
H-13 UPPER STRUCTURE DOES NOT SWING 308
H-14 EXCESSIVE HYDRAULIC DRIFT OF SWING 308
H-15 EXCESSIVE HYDRAULIC DRIFT OF WORK EQUIPMENT 309
H-16 EXCESSIVE TIME LAG FOR WORK EQUIPMENT 310
FAILURE MODE AND COMPONENTS 311
63 DISASSEMBLY AND ASSEMBLY 312
CONTROL PUMP 313
REMOVAL 313
INSTALLATION 313
MAIN PUMP 315
REMOVAL 315
INSTALLATION 316
REMOVAL (WITH OLSS) 317
INSTALLATION (WITH OLSS) 318
DISASSEMBLY 319
ASSEMBLY 323
TVC VALVE AND FRONT CO・NC VALVE 334
REMOVAL 334
INSTALLATION 334
REAR CO・NC VALVE 335
REMOVAL 335
INSTALLATION 335
SERVO VALVE 335
REMOVAL 335
INSTALLATION 335
MAIN PUMP INPUT SHAFT OIL SEAL 336
REMOVAL 336
INSTALLATION 336
L H 6-SPOOL CONTROL VALVE 337
REMOVAL 337
INSTALLATION 340
R H 5-SPOOL CONTROL VALVE 344
REMOVAL 344
INSTALLATION 346
CONTROL VALVE 348
DISASSEMBLY 348
ASSEMBLY 350
BOOM CYLINDER 352
REMOVAL 352
INSTALLATION 352
ARM CYLINDER 353
REMOVAL 353
INSTALLATION 353
BUCKET CYLINDER 354
REMOVAL 354
INSTALLATION 354
HYDRAULIC CYLINDER 355
DISASSEMBLY 355
ASSEMBLY 357
64 MAINTENANCE STANDARD 360
CHARGING PUMP (BAR16) 361
L H 6-SPOOL CONTROL VALVE 362
R H 5-SPOOL CONTROL VALVE 364
HYDRAULIC CYLINDER 366
WORK EQUIPMENT 368
70 WORK EQUIPMENT 370
73 DISASSEMBLY AND ASSEMBLY 370
WORK EQUIPMENT 371
REMOVAL 371
INSTALLATION 371
BUCKET 372
DISASSEMBLY 372
ASSEMBLY 372
ARM 373
REMOVAL 373
INSTALLATION 373
BOOM 374
REMOVAL 374
INSTALLATION 374
ARM, BUCKET 375
REMOVAL 375
INSTALLATION 375
80 ELECTRIC AND ELECTRONIC SYSTEM 376
81 STRUCTURE AND FUNCTION 376
ELECTRICAL SYSTEM 377
ELECTRICAL CIRCUIT DIAGRAM 379
82 TESTING AND ADJUSTING 381
ECECTRICAL CIRCUIT 382
TROUBLESHOOTING CHART 384
M-1 BATTERY CHARGING PILOT LAMP DOES NOT GO OFF 384
M-2 FUEL GAUGE DOES NOT DISPLAY OR DISPLAYS ABNORMALLY 385
M-3 WATER TEMPERATURE GAUGE DOES NOT OPERATE OR DISPLAYS ABNORMALLY 386

DESCRIPTION:

Komatsu PC80-3 PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302 – PDF DOWNLOAD 

GENERAL PRECAUTIONS :

Mistakes in operation are extremely dangerous. Read the OPERATION & MAINTENANCE MANUAL carefully BEFORE operating the machine.

PREPARATIONS FOR WORK:

PRECAUTIONS DURING WORK :

IMAGES PREVIEW OF THE MANUAL:

S.V 22/12/24