Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
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Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
Description
Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
FILE DETAILS:
Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
Language : English
Pages :417
Downloadable : Yes
File Type : PDF
DESCRIPTION:
Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
FOREWORD
GENERAL
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman 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. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.
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.
This section 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.
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.
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
Komatsu GD305A-3 Shop Manual SEBM018000 – PDF DOWNLOAD
COVER 1
CONTENTS 2
01 GENERAL 22
SPECIFICATION DIMENSION DRAWINGS 23
SPECIFICATIONS 24
WEIGHT TABLE 28
FUEL,COOLANT AND LUBRICANTS 29
10 STRUCTURE AND FUNCTION 30
ACCELERATOR CONTROL LINKAGE 31
ACCELERATOR PEDAL 32
POWER TRAIN DIAGRAM 33
TRANSMISSION HYDRAULIC PIPING DRAWING 34
TRANSMISSION CONTROL 35
TRANSMISSION 36
TRANSMISSION CONTROL VALVE 41
FINAL DRIVE 51
TANDEM DRIVE 52
STEERING HYDRAULIC PIPING DRAWING 53
FLOW PRIORITY VALVE 54
STEERING VALVE(ORBIR ROLL TYPE) 56
FRONT AXLE 67
BRAKE HYDRAULIC PIPING DRAWING 69
WHEEL BRAKE 70
BRAKE VALVE 71
UNLOAD RELIEF VALVE 74
BRAKE OIL PRESSURE BOOSTER 78
ACCUMULATOR 80
PARKING BRAKE CONTROL 81
PARING BRAKE 82
WORK EQUIPMENT HYDRAULIC PIPING DRAWING 83
MAIN CONTROL VALVE 85
CLSS 94
PILOT CHECK VALVE104
SLOW RETURN VALVE106
CIRCLE ROTATION MOTOR107
CIRCLE,DRAWBAR108
BLADE109
CIRCLE ROTATION GEAR110
SCARIFIER111
MAIN FRAME112
AIR CONDITIONER113
ELECTRIC WIRING DIAGRAM114
ENGINE START,STOP DEVICE117
AUTOMATIC SHIFT CONTROL SYSTEM119
SPEED LIMIT SOLENOID CONTROL128
MONITOR131
SENSORS133
20 TESTING AND ADJUSTING139
STANDARD VALUE TABLE FOR ENGINE141
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS142
TOOLS FOR TESTING,ADJUSTING,AND TROUBLESHOOTING148
ADJUSTING VALUE CLEARANCE149
TESTING AND ADJUSTING FUEL INJECTION TIMING150
MEASURING EXHAUST COLOR151
MEASURING COMPRESSION PRESSURE152
MEASURING BLOW-BY PRESSURE153
MEASURING EXHAUST GAS TEMPERATURE154
MEASURING ENGINE OIL PRESSURE155
ADJUSTING ENGINE STOP SOLENOID156
MEASURING ENGINE SPEED157
MEASURING CLUTCH OIL PRESURE CIRCUIT158
ADJUSTING ACCELERATOR LINKAGE159
ADJUSTING SPEED LIMIT CONTROL160
TESTING WHEEL BRAKE161
ADJUSTING WHEEL BRAKE162
BLEEDING AIR FROM BRAKE PIPING163
TESTING AND ADJUSTING PARING BRAKE165
TESTING WORK EQUIPMENT HYDRAULIC PRESSURE166
ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE167
MEASURING INTERNAL LEAKAGE OF CYLINDER168
PRIMING OIL169
TESTING CIRCLE GUIDE CLEARANCE170
ADJUSTING CLEARANCE OF CIRCLE GUIDE170
ADJUSTING MOUNTING POSITION OF IDLE SWITCH171
TROUBLESHOOTING172
POINTS TO REMEMBER WHEN TROUBLESHOOTING173
SEQUENCE OF EVENTS IN TROUBLESHOOTING174
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE175
CHECKS BEFORE TROUBLESHOOTING183
CONNECTOR TYPES AND MOUNTING LOCATIONS184
CONNECTOR PIN ARRANGEMENT DIAGRAM186
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS 188
TROUBLESHOOTING OF ELECTRICAL SYSTEM(E MODE)198
E-1 ENGINE DOES NOT START199
a) STARTING MOTOR DOES NOT TURN199
b) ENGINE STOP SOLENOID DOES NOT WORK200
E-2 ENGINE DOES NOT STOP201
E-3 ENGINE PREHEATING PILOT LAMP DOES NOT LIGHT UP202
E-4 ELECTRICAL EQUIPMENT DOES NOT WORK203
TROUBLESHOOTING OF ENGINE(S MODE)204
METHOD OF UING TROUBLESHOOTING CHARTS205
S-1 STARTING PERFORMANCE IS POOR(STARTING ALWAYS TAKES TIME)209
S-2 ENGINE DOES NOT START210
(1) ENGINE DOES NOT TURN 210
(2) ENGINE TURNS BUT NO EXHAUST SMOKE COMES OUT(FUEL IS NOT BEING INJECTED)211
(3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)212
S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)213
S-4 ENGINE STOPS DURING OPERATIONS214
S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)215
S-6 ENGINE LACKS OUTPUT (NO POWER)216
S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)217
S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)218
S-9 OIL BECOMES CONTAMINATED QUICKLY219
S-10 FUEL CONSUMPTION IS EXCESSIVE220
S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN221
S-12 OIL PRESSURE CAUTION LAMP LIGHTS UP (DROP IN OIL PRESSURE)222
S-13 OIL LEVEL RISES (WATER, FUEL IN OIL )223
S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)224
S-15 ABNORMAL NOISE IS MADE225
S-16 VIBRATION IS EXCESSIVE226
TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (A MODE)227
TRANSMISSION CONTROLLER ABNORMALITY DISPLAY228
LED CAUTION LAMP DISPLAY (ERROR CODE)229
ERROR CODES230
A-1 ABNORMALITY IN TRANSMISSION CONTROLLER POWER SOURCE234
A-2 ABNORMALITY IN TRANSMISSION INPUT SHAFT SPEED SENSOR235
A-3 ABNORMALITY IN TRANSMISSION OUTPUT SHAFT SPEED SENSOR236
A-4 ABNORMALITY IN ACCELERATION SENSOR SYSTEM237
A-5 ABNORMALITY IN IDLE SWITCH SYSTEM238
A-6 ABNORMALITY IN TRAVEL/OPERATING MODE SELECTOR SYSTEM238
A-7 ABNORMALITY IN SHIFT SWITH SYSTEM239
A-8 ABNORMALITY IN LOCK-UP SOLENOID SYSTEM240
A-9 ABNORMALITY IN TRANSMISSION SOLENOID A SYSTEM241
A-10 ABNORMALITY IN TRANSMISSION SOLENOID B SYSTEM242
A-11 ABNORMALITY IN TRANSMISSION SOLENOID C SYSTEM243
A-12 ABNORMALITY IN TRANSMISSION SOLENOID D SYSTEM244
A-13 ABNORMALITY IN TRANSMISSION SOLENOID H SYSTEM245
CIRCUIT DRAWING FOR TRANSMISSION CONTROLLER SYSTEM246
TROUBLESHOOTING OF WORK EQUIPMENT HYDRAULIC SYSTEM (H MODE)248
TABLE OF FAILURE MODES AND CAUSES249
H-1 SPEEDS OF WORK EQUIPMENT IS SLOW 251
H-2 THERE IS EXCESSIVE DROP IN ENGINE SPEED, OR ENGINE STALLS252
H-3 ABNORMAL NOISE GENERATED (AROUND PUMP)252
H-4 EXCESSIVE HYDRAULIC DRIFT OF BLADE253
H-5 IMPOSSIBLE TO RAISE MACHINE (FRONT) WITH BLADE253
H-6 LACK OF ACTUATING POWER IN ARTICULATING (LEFT,RIGHT),DRAWBAR SHIFT,SCARIFIER,LEANING,BLADE SHIFT CYLINDERS254
H-7 EXCESSIVE HYDRAULIC DRIFT OF LEANING CYLINDER (LEANING OF TIRES)254
H-8 IMPOSSIBLE TO ROTATE CIRCLE255
H-9 EXCESSIVE HYDRAULIC DRIFT OF SCARIFIER255
30 DISASSEMBLY AND ASSEMBLY256
METHOD OF USING MANUAL257
PRECAUTIONS WHEN CARRYING OUT OPERATION258
SPECIAL TOOL LIST260
STARTING MOTOR 261
REMOVAL AND INSTALLATION261
ALTERNATOR 262
REMOVAL AND INSTALLATION262
ENGINE OIL COOLER CORE263
REMOVAL AND INSTALLATION263
FUEL INJECTION PUMP 264
REMOVAL264
INSTALLATION266
WATER PUMP 269
REMOVAL AND INSTALLATION269
TURBOCHARGER 270
REMOVAL AND INSTALLATION270
NOZZLE HOLDER 271
REMOVAL271
INSTALLATION272
THERMOSTAT 273
REMOVAL AND INSTALLATION273
CYLINDER HEAD 274
REMOVAL274
INSTALLATION279
RADIATOR282
REMOVAL AND INSTALLATION282
FUEL TANK 283
REMOVAL AND INSTALLATION283
ENGINE 284
REMOVAL284
INSTALLATION288
TRANSMISSION292
REMOVAL AND INSTALLATION292
DRIVE CHAIN293
REMOVAL293
INSTALLATION295
TANDEM AND FINAL DRIVE297
REMOVAL297
INSTALLATION298
DISASSEMBLY299
ASSEMBLY303
FINAL DRIVE SIDE CASE309
DISASSEMBLY309
ASSEMBLY311
FINAL DRIVE PINION314
DISASSEMBLY314
ASSEMBLY316
FRONT WHEEL318
REMOVAL AND INSTALLATION318
REAR WHEEL319
REMOVAL AND INSTALLATION319
FRONT AXLE320
REMOVAL AND INSTALLATION320
DISASSEMBLY321
ASSEMBLY326
STEERING CONTROL VALVE331
DISASSEMBLY331
ASSEMBLY334
WHEEL BRAKE341
REMOVAL AND INSTALLATION341
DISASSEMBLY342
ASSEMBLY345
HYDRAULIC TANK348
REMOVAL348
INSTALLATION349
CIRCLE ROTATION MOTOR350
DISASSEMBLY350
ASSEMBLY355
CIRCLE ROTATION AND HYDRAULIC MOTOR361
REMOVAL361
INSTALLATION362
CIRCLE ROTATION GEAR363
DISASSEMBLY363
ASSEMBLY365
CIRCLE,DRAWBAR367
REMOVAL367
INSTALLATION368
BLADE369
REMOVAL AND INSTALLATION369
ENGINE HOOD370
REMOVAL AND INSTALLATION370
ADJUSTMENT371
FRONT WEIGHT372
REMOVAL AND INSTALLATION372
REAR WEIGHT373
REMOVAL AND INSTALLATION373
CAB374
REMOVAL 374
INSTALLATION378
40 MAINTENANCE STANDARD381
TRANSMISSION382
TRANSMISSION CONTROL VALVE385
FINAL DRIVE388
TANDEM DRIVE389
FRONT AXLE390
WHEEL BRAKE392
BRAKE VALVE393
BRAKE OIL PRESSURE BOOSTER394
PARKING BRAKE395
HYDRAULIC PUMP396
MAIN CONTROL VALVE397
HYDRAULIC CYLINDER403
CIRCLE,DRAWBAR407
BLADE408
CIRCLE ROTATION GEAR409
SCARIFIER410
90 OTHERS411
TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM412
HYDRAULIC CIRCUIT DIAGRAM 415
ELECTRICAL CIRCUIT DIAGRAM (1/2)416
ELECTRICAL CIRCUIT DIAGRAM (2/2)417
IMAGES PREVIEW OF THE MANUAL:
S.M 22/12/24
