KOMATSU D39EX,PX-21 SERVICE REPAIR MANUAL (SN:1001 & UP) – PDF DOWNLOAD

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KOMATSU D39EX,PX-21 SERVICE REPAIR MANUAL (SN:1001 & UP)

KOMATSU D39EX,PX-21 SERVICE REPAIR MANUAL (SN:1001 & UP) – PDF DOWNLOAD:

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This shop manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
00. FOREWORD
This section explains the safety and basic information.
01. GENERAL
This section explains the specifications of the machine.
10. STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
This section explains the structure, function, and maintenance standard values of each component. The structure and function sub-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. The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
20. TESTING AND ADJUSTING
Standard value table
This section explains the standard values for new machine and judgement criteria for testing, adjusting, and troubleshooting. This standard value table is used to check the standard values in testing and adjusting and to judge parts in troubleshooting.
Testing and adjusting
This section explains measuring instruments and measuring methods for testing and adjusting, and method of adjusting each part. The standard values and judgement criteria for testing and adjusting are explained in Testing and adjusting.
Troubleshooting
This section explains how to find out failed parts and how to repair them. The troubleshooting is divided
by failure modes. The “S mode” of the troubleshooting related to the engine may be also explained in the Chassis volume and Engine volume. In this case, see the Chassis volume.
30. DISASSEMBLY AND ASSEMBLY
This section explains the special tools and procedures for removing, installing, disassembling, and assembling each component, as well as precautions for them. In addition, tightening torque and quantity and weight of coating material, oil, grease, and coolant necessary for the work are also explained.
90. OTHERS (chassis volume)/Repair and replacement of parts (engine volume)
• Chassis volume
This section gives hydraulic circuit diagrams and electrical circuit diagrams.
• Engine volume
This section explains the method of reproducing, repairing, and replacing parts.

TABLE OF CONTENTS:

COVER..............................................................................................................................................................  1
CONTENTS...........................................................................................................................................................  2
01 GENERAL......................................................................................................................................................... 35
	SPECIFICATION DRAWING.......................................................................................................................................... 36
	SPECIFICATIONS................................................................................................................................................. 37
	WEIGHT TABLE................................................................................................................................................... 41
	TABLE OF FUEL, COOLANT AND LUBRICANTS.......................................................................................................................... 43
10 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD.................................................................................................................... 44
	COOLING SYSTEM................................................................................................................................................. 45
	ENGINE CONTROL................................................................................................................................................. 46
	POWER TRAIN.................................................................................................................................................... 47
	POWER TRAIN SYSTEM............................................................................................................................................. 48
	HST HYDRAULIC EQUIPMENT ARRANGEMENT DIAGRAM.................................................................................................................... 49
	STEERING, BRAKE CONTROL........................................................................................................................................ 51
	DAMPER......................................................................................................................................................... 57
	SOLENOID VALVE................................................................................................................................................. 58
	FINAL DRIVE.................................................................................................................................................... 60
	HST PUMP....................................................................................................................................................... 63
	SAFETY-SUCTION VALVE........................................................................................................................................... 68
	CUT-OFF VALVE.................................................................................................................................................. 71
	CHARGE SAFETY VALVE............................................................................................................................................ 72
	CHARGE PUMP.................................................................................................................................................... 74
	HST BRAKE QUICK RETURN CIRCUIT................................................................................................................................. 75
	TOWING VALVE................................................................................................................................................... 76
	PARKING BRAKE VALVE............................................................................................................................................ 77
	AS VALVE....................................................................................................................................................... 79
	HST MOTOR...................................................................................................................................................... 81
	STEERING, DIRECTIONAL PPC VALVE................................................................................................................................ 92
	INCHING VALVE..................................................................................................................................................101
	AUTOMATIC GEARSHIFTING VALVE...................................................................................................................................103
	FRAME ASSEMBLY.................................................................................................................................................108
	TRACK FRAME, RECOIL SPRING.....................................................................................................................................109
	IDLER..........................................................................................................................................................111
	TRACK ROLLER...................................................................................................................................................113
	CARRIER ROLLER.................................................................................................................................................114
	SPROCKET.......................................................................................................................................................115
	TRACK SHOE.....................................................................................................................................................117
	ARRANGEMENT OF HYDRAULIC EQUIPMENT FOR WORK EQUIPMENT..........................................................................................................121
	WORK EQUIPMENT CONTROL.........................................................................................................................................122
	HYDRAULIC TANK, FILTER.........................................................................................................................................124
	HYDRAULIC PUMP.................................................................................................................................................125
	WORK EQUIPMENT CYLINDER........................................................................................................................................126
	SUCTION VALVE..................................................................................................................................................128
	CONTROL VALVE..................................................................................................................................................130
	CLSS...........................................................................................................................................................138
	WORK EQUIPMENT PPC VALVE.......................................................................................................................................148
	WORK EQUIPMENT ................................................................................................................................................155
	CUTTING EDGE, END BIT..........................................................................................................................................158
	CAB RELATED....................................................................................................................................................159
	SAFETY MECHANISM WHEN STARTING ENGINE..........................................................................................................................160
	GEARSHIFT CONTROL SYSTEM.......................................................................................................................................161
	PARKING BRAKE CONTROL SYSTEM...................................................................................................................................162
	COMPONENT EQUIPMENT OF SYSTEM..................................................................................................................................163
	MONITOR SYSTEM.................................................................................................................................................165
	SENSORS........................................................................................................................................................169
20 TESTING AND ADJUSTING...........................................................................................................................................172
	STANDARD VALUE TABLE FOR ENGINE................................................................................................................................173
	STANDARD VALUE TABLE FOR CHASSIS...............................................................................................................................174
	STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM.....................................................................................................................179
	TESTING AND ADJUSTING..........................................................................................................................................181
		TOOLS LIST FOR TESTING AND ADJUSTING.......................................................................................................................182
		MEASURING ENGINE SPEED.....................................................................................................................................185
		MEASURING EXHAUST COLOR....................................................................................................................................186
		MEASURING BLOW-BY PRESSURE.................................................................................................................................187
		MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE).............................................................................................................188
		ADJUSTING VALVE CLEARANCE..................................................................................................................................189
		TESTING ADJUSTING FUEL INJECTION TIMING....................................................................................................................191
		MEASURING COMPRESSION PRESSURE.............................................................................................................................192
		ADJUSTING ENGINE STOP SOLENOIDE LINKAGE....................................................................................................................193
		MEASURING ENGINE OIL PRESSURE..............................................................................................................................194
		BLEEDING AIR FROM FUEL CIRCUIT.............................................................................................................................195
		REPLACEMENT OF FAN BELT....................................................................................................................................196
		TESTING AND ADJUSTING TENSION OF AIR CONDITIONER COMPRESSOR BELT...........................................................................................198
		MEASURING AND ADJUSTING HST OIL PRESSURE...................................................................................................................199
		MEASURING SOLENOID VALVE OUTPUT PRESSURE...................................................................................................................204
		MEASURING AND ADJUSTING WORK EQUIPMENT MAIN RELIEF PRESSURE................................................................................................205
		MEASURING PPC VALVE OUTPUT PRESSURE........................................................................................................................207
		MEASURING LEAKAGE INSIED CYLINDER..........................................................................................................................208
		BLEEDING AIR FROM HYDRAULIC CYLINDERS......................................................................................................................208
		TESTING AND ADJUSTING TRACK SHOE TENSION...................................................................................................................209
		TESTING AND ADJUSTING TRAVEL DEVIATION.....................................................................................................................210
		ADJUSTING FUEL CONTROL LINKAGE.............................................................................................................................213
		ADJUSTING DECELERATOR PEDAL LINKAGE........................................................................................................................215
		ADJUSTING BRAKE PEDAL LINKAGE..............................................................................................................................216
		ADJUSTING STEERING/DIRECTIONAL/GEAR SHIFT LEVER AND LOCK LEVER.............................................................................................218
		ADJUSTING BLADE CONTROL LEVER AND LOCK LEVER...............................................................................................................221
		ADJUSTING WORK EQUIPMENT PPC VALVE.........................................................................................................................222
		PROCEDURE FOR RELEASING PARKING BRAKE......................................................................................................................223
		PROCEDURE FOR INSPECTING DIODE.............................................................................................................................225
	TROUBLESHOOTING................................................................................................................................................226
		POINTS TO REMEMBER WHEN TROUBLESHOOTING....................................................................................................................227
		SEQUENCE OF EVENTS IN TROUBLESHOOTING......................................................................................................................228
		HANDLING OF ELECTRIC EQUIPMENT AND HYDRAULIC COMPONENT.....................................................................................................229
		CHECKS BEFORE TROUBLESHOOTING..............................................................................................................................239
		METHOD OF USING TROUBLESHOOTING CHARTS.....................................................................................................................240
		TYPES AND LOCATIONS OF CONNECTORS..........................................................................................................................241
		CONNECTOR ARRANGEMENT DIAGRAM..............................................................................................................................243
		CONNECTION TABLE FOR CONNECTOR PIN NUMBERS.................................................................................................................245
		T-BRANCH BOX AND T-BRANCH ADAPTER TABLE....................................................................................................................281
		TROUBLESHOOTING FOR ELECTRICAL SYSTEM (E-MODE).............................................................................................................284
			TABLE OF FAILURE MODES AND CAUSES (ELECTRICAL SYSTEM)..................................................................................................285
			ELECTRICAL CIRCUIT DIAGRAM FOR EACH SYSTEM.............................................................................................................287
			E-1. WHEN STARTING SWITCH IS TURNED ON, STARTING MOTOR DOES NOT ROTATE.................................................................................289
			E-2. ENGINE DOES NOT START (ENGINE STOP SOLENOID DOES NOT OPERATE NORMALLY)............................................................................291
			E-3. HEADLAMP DOES NOT LIGHT UP........................................................................................................................292
			E-4. WHEN STARTING SWITCH IS TURNED TO HEAT POSITION, ENGINE IS NOT HEATED.............................................................................294
			E-5. WINDSHIELD WIPER DOES NOT OPERATE.................................................................................................................295
			E-6. WASHING WATER DOES NOT SPOUT......................................................................................................................297
			E-7. AIR CONDITIONER DOES NOT WORK.....................................................................................................................299
				(a) AIR DOES NOT BLOW OUT..........................................................................................................................299
				(b) AIR IS NOT COOLED..............................................................................................................................302
			E-8. PARKING BRAKE CANNOT BE RELEASED (PARKING BRAKE SOLENOID DOES NOT OPERATE)........................................................................306
			E-9. TRAVEL SPEED CONTROL IS ABNORMAL..................................................................................................................307
				(a) WHEN GEAR SHIFT SWITCH IS PRESSED, GEAR SPEED DOES NOT CHANGE OR GEAR SPEED CHANGES BY ITSELF (GEAR SHIFT SWITCH OR CONTROLLER IS ABNORMAL)....307
				(b) GEAR SPEED CANNOT BE SELECTED NORMALLY (TRAVEL SPEED CHANGEOVER SOLENOID IS ABNORMAL)..........................................................308
			E-10. BACKUP ALARM DOES NOT SOUND DURING REVERSE TRAVEL................................................................................................310
			E-11. HORN DOES NOT SOUND..............................................................................................................................312
		TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEM (H-MODE)...............................................................................................313
			TABLE OF FAILURE MODES AND CAUSES (HYDRAULIC AND MECHANICAL SYSTEMS)...................................................................................314
			H-1. MACHINE DOES NOT TRAVEL IN EITHER DIRECTION OR IT STOPS SUDDENLY..................................................................................316
			H-2. MACHINE DOES NOT TRAVEL IN ONE DIRECTION..........................................................................................................317
			H-3. MACHINE TRAVELS WHILE TRAVEL LEVER IS IN NEUTRAL..................................................................................................317
			H-5. MACHINE DEVIATES WHILE TRAVEL LEVER IS IN PARTIAL POSITION........................................................................................317
			H-7. MACHINE SWINGS MOMENTARILY WHEN IT STARTS ON FLAT GROUND..........................................................................................317
			H-11. TURNING TIME LAG IS LARGE........................................................................................................................317
			H-12. WHEN OPERATOR INTENDS TO TURN GRADUALLY, MACHINE TURNS SHARPLY...................................................................................317
			H-13. MACHINE DOES NOT RETURN QUICKLY TO STRAIGHT TRAVEL POSITION......................................................................................317
			H-14. MACHINE IS NOT DECELERATED SMOOTHLY OR TRAVEL SPEED CANNOT BE CONTROLLED ON DOWNHILL GROUND......................................................317
			H-15. MACHINE DEVIATES WHEN IT IS DECELERATED..........................................................................................................317
			H-4. MACHINE DEVIATES WHEN TRAVEL LEVER IS MOVED TO STROKE END.........................................................................................318
			H-6. MACHINE MOVES BACK WHEN OPERATOR STARTS ON UPHILL GROUND..........................................................................................318
			H-8. MACHINE STARTS SHARPLY............................................................................................................................318
			H-9. MACHINE SWINGS MOMENTARILY WHEN IT STARTS.........................................................................................................319
			H-10. STARTING TIME LAG IS LARGE.......................................................................................................................320
			H-16. MAXIMUM TRAVEL SPEED IS LOW OR OUTPUT POWER IS INSUFFICIENT OR ACCELERATION IS LOW...............................................................321
			H-17. ENGINE STALLS....................................................................................................................................322
			H-18. HST NOISE IS LARGE...............................................................................................................................323
			H-19. HST OIL TEMPERATURE RISES TOO HIGH...............................................................................................................324
			H-20. GEAR SPEED DOES NOT CHANGE.......................................................................................................................324
			H-21. ABNORMAL SOUND IS HEARD FROM AROUND WORK EQUIPMENT PUMP OR HST PUMP..............................................................................325
			H-22. ANY WORK EQUIPMENT DOES NOT MOVE.................................................................................................................325
			H-23. SPEED OR POWER OF EACH WORK EQUIPMENT IS LOW.....................................................................................................326
			H-24. SPEED OR POWER OF BLADE LIFT OF BLADE TILT CYLINDER IS LOW.......................................................................................326
			H-25. SPEED OR POWER OF BLADE ANGLE CYLINDER IS LOW....................................................................................................327
			H-26. HYDRAULIC DRIFT OF BLADE LIFT CYLINDER IS LARGE..................................................................................................328
			H-27. HYDRAULIC DRIFT OF BLADE TILT CYLINDER IS LARGE..................................................................................................328
			H-28. HYDRAULIC DRIFT OF BLADE ANGLE CYLINDER IS LARGE.................................................................................................329
		TROUBLESHOOTING FOR MACHINE MONITOR SYSTEM (M-MODE)........................................................................................................330
			TABLE OF FAILURE MODES AND CAUSES (MACHINE MONITOR SYSTEM).............................................................................................331
			ELECTRIC CIRCUIT DIAGRAM FOR EACH SYSTEM...............................................................................................................332
			M-1. WHEN STARTING SWITCH IS TURNED ON , MONITOR PANEL IS NOT TURNED ON................................................................................334
			M-2. TROUBLE IN PREHEATING CAUTION LAMP................................................................................................................335
				(a) PREHEATING MONITOR DOES NOT LIGHT UP...........................................................................................................335
				(b) PREHEATING MONITOR KEEPS LIGHTING UP...........................................................................................................335
			M-3. CAUTION ITEM LIGHTS UP............................................................................................................................336
				(a) CHARGE CAUTION LAMP LIGHTS UP WHILE ENGINE IS RUNNING..........................................................................................336
				(b) OIL PRESSURE CAUTION LAMP LIGHTS UP WHILE ENGINE IS RUNNING....................................................................................337
				(c) HST FILTER CLOGGING CAUTION LAMP LIGHTS UP (WHILE FILTER IS NOT CLOGGED).......................................................................337
			M-4. TROUBLE IN HST OIL TEMPERATURE GAUGE..............................................................................................................338
				(a) GAUGE DOES NOT RISE ABOVE C (LOWEST POINT).....................................................................................................338
				(b) GAUGE DOES NOT LOWER BELOW H (HIGHEST POINT)...................................................................................................338
				(c) HST OIL TEMPERATURE INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL TEMPERATURE....................................................................339
			M-5. TROUBLE IN ENGINE WATER TEMPERATURE GAUGE.........................................................................................................340
				(a) GAUGE DOES NOT RISE ABOVE C (LOWEST POINT).....................................................................................................340
				(b) GAUGE DOES NOT LOWER BELOW H (HIGHEST POINT)...................................................................................................340
				(c) ENGINE WATER TEMPERATURE INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL TEMPERATURE...............................................................341
			M-6. TROUBLE IN FUEL LEVEL GAUGE.......................................................................................................................342
				(a) GAUGE DOES NOT RISE ABOVE E (LOWEST POINT).....................................................................................................342
				(b) GAUGE DOES NOT LOWER BELOW F (HIGHEST POINT)...................................................................................................342
				(c) FUEL LEVEL INDICATED BY GAUGE IS DIFFERENT FROM ACTUAL LEVEL...................................................................................343
			M-7. SERVICE METER DOES NOT OPERATE AFTER ENGINE IS STARTED............................................................................................344
			M-8. MONITOR PANEL LAMP DOES NOT LIGHT UP (WHILE HEADLAMP IS NORMAL)...................................................................................345
			M-9. TROUBLE IN DISPLAY OF TRAVEL SPEED (WHILE ACTUAL TRAVEL SPEED IS NORMAL)..........................................................................346
				(a) TRAVEL SPEED IS NOT DISPLAYED..................................................................................................................346
				(b) DISPLAYED SPEED IS DIFFERENT FROM ACTUAL TRAVEL SPEED..........................................................................................346
		TROUBLESHOOTING FOR ENGINE SYSTEM (S-MODE).................................................................................................................348
			METHOD OF USING TROUBLESHOOTING CHARTS.................................................................................................................349
			S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)..........................................................................................353
			S-2 ENGINE DOES NOT START .............................................................................................................................354
			S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR) ..............................................................................................357
			S-4 ENGINE STOPS DURING OPERATIONS.....................................................................................................................358
			S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)..........................................................................................................359
			S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)...............................................................................................................360
			S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION).....................................................................................................361
			S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)............................................................................................362
			S-9 OIL BECOMES CONTAMINATED QUICKLY...................................................................................................................363
			S-10 FUEL CONSUMPTION IS EXCESSIVE.....................................................................................................................364
			S-11 OIL IS IN COOLANT, OR COOLANT SPURTS BACK, OR COOLANT LEVEL GOES DOWN ............................................................................365
			S-12 OIL PRESSURE CAUTION LAMP LIGHTS UP (DROP IN OIL PRESSURE)........................................................................................366
			S-13 OIL LEVEL RISES (WATER, FUEL IN OIL)..............................................................................................................367
			S-14 COOLANT TEMPERATURE BECOMES TOO HIGH (OVERHEATING)................................................................................................368
			S-15 ABNORMAL NOISE IS MADE............................................................................................................................369
			S-16 VIBRATION IS EXCESSIVE............................................................................................................................370
30 DISASSEMBLY AND ASSEMBLY........................................................................................................................................372
	HOW TO READ THIS MANUAL........................................................................................................................................373
	COATING MATERIALS LIST.........................................................................................................................................375
	SPECIAL TOOL LIST..............................................................................................................................................378
	SKETCHES OF SPECIAL TOOLS......................................................................................................................................380
	REMOVAL OF FUEL INJECTION PUMP ASSEMBLY........................................................................................................................381
	INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY...................................................................................................................383
	REMOVAL OF CYLINDER HEAD ASSEMBLY..............................................................................................................................385
	INSTALLATION OF CYLINDER HEAD ASSEMBLY.........................................................................................................................390
	REMOVAL OF ENGINE FRONT SEAL...................................................................................................................................392
	INSTALLATION OF ENGINE FRONT SEAL..............................................................................................................................393
	REMOVAL OF ENGINE REAR SEAL....................................................................................................................................394
	INSTALLATION OF ENGINE REAR SEAL...............................................................................................................................395
	REMOVAL OF RADIATOR GUARD ASSEMBLY.............................................................................................................................396
	INSTALLATION OF RADIATOR GUARD ASSEMBLY........................................................................................................................398
	DISASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES..........................................................................................399
	ASSEMBLY OF RADIATOR, OIL COOLER, AND CHARGE AIR COOLER ASSEMBLIES.............................................................................................401
	REMOVAL OF ENGINE ASSEMBLY.....................................................................................................................................403
	INSTALLATION OF ENGINE ASSEMBLY................................................................................................................................405
	REMOVAL OF DAMPER..............................................................................................................................................406
	INSTALLATION OF DAMPER.........................................................................................................................................406
	REMOVAL OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY...............................................................................................................407
	INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY..........................................................................................................408
	DISASSEMBLY OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY...........................................................................................................409
	ASSEMBLY OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY..............................................................................................................413
	REMOVAL OF IDLER AND RECOIL SPRING ASSEMBLY....................................................................................................................418
	INSTALLATION OF IDLER AND RECOIL SPRING ASSEMBLY...............................................................................................................418
	DISASSEMBLY OF RECOIL SPRING ASSEMBLY..........................................................................................................................419
	ASSEMBLY OF RECOIL SPRING ASSEMBLY.............................................................................................................................420
	DISASSEMBLY OF IDLER ASSEMBLY..................................................................................................................................422
	ASSEMBLY OF IDLER ASSEMBLY.....................................................................................................................................423
	DISASSEMBLY OF TRACK ROLLER ASSEMBLY...........................................................................................................................425
	ASSEMBLY OF TRACK ROLLER ASSEMBLY..............................................................................................................................426
	DISASSEMBLY OF CARRIER ROLLER ASSEMBLY.........................................................................................................................429
	ASSEMBLY OF CARRIER ROLLER ASSEMBLY............................................................................................................................430
	SPREADING TRACK SHOE ASSEMBLY..................................................................................................................................431
	INSTALLATION OF TRACK SHOE ASSEMBLY............................................................................................................................432
	REMOVAL OF HST PUMP ASSEMBLY...................................................................................................................................433
	INSTALLATION OF HST PUMP ASSEMBLY..............................................................................................................................434
	REMOVAL OF MAIN CONTROL VALVE ASSEMBLY.........................................................................................................................435
	INSTALLATION OF MAIN CONTROL VALVE ASSEMBLY....................................................................................................................436
	DISASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY.....................................................................................................................437
	ASSEMBLY OF MAIN CONTROL VALVE ASSEMBLY........................................................................................................................441
	DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES...................................................................................................................445
	ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES......................................................................................................................446
	REMOVAL OF BALDE ASSEMBLY......................................................................................................................................448
	INSTALLATION OF BLADE ASSEMBLY.................................................................................................................................449
	REMOVAL OF OPERATOR'S CAB FRAME ASSEMBLY.......................................................................................................................450
	INSTALLATION OF OPERATO'S CAB FRAME ASSEMBLY...................................................................................................................454
	REMOVAL OF FUEL TANK ASSEMBLY..................................................................................................................................455
	INSTALLATION OF FUEL TANK ASSEMBLY.............................................................................................................................455
	REMOVAL OF HYDRAULIC TANK ASSEMBLY.............................................................................................................................456
	INSTALLATION OF HYDRAULIC TANK ASSEMBLY........................................................................................................................457
90 OTHERS..........................................................................................................................................................458
	HYDRAULIC CIRCUIT DIAGRAM (1/2)(D39EX-21 SERIAL NO.1001-1200 D39PX-21 SERIAL NO.1001-1208).....................................................................459
	HYDRAULIC CIRCUIT DIAGRAM (1/2) (D39EX-21 SERIAL NO.1201 AND UP D39PX-21 SERIAL NO.1209 AND UP)................................................................460
	HYDRAULIC CIRCUIT DIAGRAM (2/2)................................................................................................................................461
	ELECTRICAL CIRCUIT DIAGRAM (1/2)...............................................................................................................................462
	ELECTRICAL CIRCUIT DIAGRAM (2/2)...............................................................................................................................463
	ELECTRICAL CIRCUIT DIAGRAM FOR AIR CONDITIONER.................................................................................................................464

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