KOMATSU D20,21A,P,PL SERVICE REPAIR MANUAL(SN:45001 & UP)(SN:45003 & up) KOMATSU D20,21A,P,PL – PDF DOWNLOAD

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KOMATSU D20,21A,P,PL SERVICE REPAIR MANUAL(SN:45001 & UP)(SN:45003 & up) KOMATSU D20,21A,P,PL

KOMATSU D20,21A,P,PL SERVICE REPAIR MANUAL(SN:45001 & UP)(SN:45003 & UP) KOMATSU D20,21A,P,PL – PDF DOWNLOAD:

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TABLE OF CONTENTS:

KOMATSU D20,21A,P,PL SERVICE REPAIR MANUAL(SN:45001 & UP)(SN:45003 & up) KOMATSU D20,21A,P,PL

COVER................................................................................  1
CONTENTS............................................................................. 10
0. GENERAL........................................................................... 11
	01 GENERAL....................................................................... 11
		GENERAL...................................................................... 12
			GENERAL VIEW............................................................. 13
			SPECIFICATIONS (BODY).................................................... 21
			SPECIFICATIONS (ENGINE).................................................. 28
			ENGINE PERFORMANCE CURVE................................................. 29
			WEIGHT TABLE............................................................. 30
			GENERAL ASSEMBLY DRAWING OF MACHINE...................................... 34
			SERIAL NUMBER LOCATION................................................... 38
			OIL AND WATER FILLING AND DRAINING PORTS................................. 40
			LIST OF OIL AND WATER CAPACITY........................................... 42
Ⅰ. ENGINE............................................................................ 44
	12 TESTING AND ADJUSTING......................................................... 44
		TESTING AND ADJUSTING........................................................ 45
			STANDARD VALUES REQUIRED FOR INSPECTION AND ADJUSTMENT................... 46
			MEASURING AND INSPECTION TOOLS REQUIRED FOR INSPECTION AND ADJUSTMENT.... 47
			ENGINE INSPECTION AND ADJUSTMENT GENERAL................................. 48
			INTAKE AND EXHAUST SYSTEM................................................ 50
			ENGINE BODY.............................................................. 53
			LUBRICATION SYSTEM....................................................... 55
			FUEL SYSTEM.............................................................. 57
			COOLING SYSTEM........................................................... 63
Ⅱ. POWER TRAIN....................................................................... 65
	21 STRUCTURE AND FUNCTION........................................................ 65
		STRUCTURE AND FUNCTION....................................................... 66
			GENERAL.................................................................. 67
			MAIN CLUTCH, AND INERTIA BRAKE (D20-5)................................... 71
			TRANSMISSION (D20-5)..................................................... 73
			DAMPER AND UNIVERSAL JOINT (D21-5)....................................... 75
			HYDROSHIFT TRANSMISSION (D21-5).......................................... 77
			HYDROSHIFT CONTROL VALVE (D21-5)......................................... 85
			HYDROSHIFT TRANSMISSION HYDRAULIC DIAGRAM (D21-5)........................ 89
			BEVEL GEAR SHAFT AND STEERING CLUTCH..................................... 95
			STEERING CONTROL HYDRAULIC CIRCUIT....................................... 98
			STEERING CONTROL VALVE................................................... 99
			FINAL DRIVE..............................................................101
	22 TESTING AND ADJUSTING.........................................................102
		TESTING AND ADJUSTING........................................................103
			STANDARD VALUES..........................................................104
			OIL PRESSURE AND TEMPERATURE MEASUREMENTS................................106
			CHECK AND ADJUSTMENT OF LEVERS AND PEDAL TRAVEL..........................109
			OPERATING FORCE MEASUREMENTS.............................................113
			CHECK AND ADJUSTMENT OF TRAVEL...........................................115
	24 MAINTENANCE STANDARD..........................................................119
		MAINTENANCE STANDARD.........................................................120
			MAIN CLUTCH (D20-5)......................................................121
			BOOSTER SPRING AND INERTIA BRAKE.........................................123
			TRANSMISSION (D20-5).....................................................124
			DAMPER (D21-5)...........................................................128
			HYDROSHIFT TRANSMISSION (D21-5)..........................................129
			TRANSMISSION CONTROL VALVE (D21-5).......................................131
			TRANSMISSION AND STEERING PUMP...........................................133
			BEVEL GEAR SHAFT.........................................................134
			STEERING CLUTCH..........................................................136
			STEERING BRAKE...........................................................140
			STEERING CONTROL VALVE...................................................141
			STEERING MAIN RELIEF VALVE...............................................142
			FINAL DRIVE..............................................................143
Ⅲ. UNDERCARRIAGE.....................................................................145
	31 STRUCTURE AND FUNCTION........................................................145
		STRUCTURE AND FUNCTION.......................................................146
			TRACK SHONE..............................................................147
			IDLER ...................................................................149
			TRACK ROLLER,CARRIER ROLLER..............................................150
			RECOIL SPRING............................................................151
			TRACK FRAME..............................................................152
	34 MAINTENANCE STANDARD..........................................................154
		MAINTENANCE STANDARD.........................................................155
			TRACK FRAME..............................................................156
			RECOIL SPRING ...........................................................157
			IDLER....................................................................158
			TRACK ROLLER.............................................................160
			CARRIER ROLLER...........................................................162
			TRACK SHOE...............................................................164
Ⅵ. HYDRAULIC SYSTEM..................................................................166
	61 STRUCTURE AND FUNCTION........................................................166
		STRUCTURE AND FUNCTION.......................................................167
			GENERAL .................................................................168
			HYDRAULIC PIPING.........................................................170
			HYDRAULIC CONTROL VALVE..................................................176
			MAIN RELIEF VALVE........................................................180
			SAFETY VALVE AND SUCTION VALVE...........................................181
			HYDRAULIC DIAGRAM........................................................183
			HYDRAULIC CYLINDER.......................................................193
	62 TESTING AND ADJUSTING.........................................................196
		TESTING AND ADJUSTING........................................................197
			STANDARD VALUES..........................................................198
			HYDRAULIC OIL PRESSURE...................................................199
			HYDRAULIC OIL TEMPERATURE................................................200
			TRAVEL AND OPERATING FORCE OF WORK EQUIPMENT LEVER.......................201
			MEASURING OF HYDRAULIC DRIFT OF WORK EQUIPMENT...........................201
			BLEEDING AIR FROM ANGLE CYLINDER HEAD CIRCUIT............................202
	64 MAINTENANCE STANDARD..........................................................203
		MAINTENANCE STANDARD.........................................................204
			HYDRAULIC CONTROL VALVE..................................................205
			SUCTION VALVE, SAFETY VALVE..............................................207
			CYLINDER.................................................................208
Ⅶ. WORK EQUIPMENT....................................................................213
	71 STRUCTURE AND FUNCTION........................................................213
		STRUCTURE AND FUNCTION.......................................................214
			WORK EQUIPMENT...........................................................215
	74 MAINTENANCE STANDARD..........................................................218
		MAINTENANCE STANDARD.........................................................219
			WORK EQUIPMENT...........................................................220

DESCRIPTION:

KOMATSU D20,21A,P,PL SERVICE REPAIR MANUAL(SN:45001 & UP)(SN:45003 & up) KOMATSU D20,21A,P,PL

• 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.
• STRUCTURE AND FUNCTION
  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. In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
• TESTING AND ADJUSTING
  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” with “Causes” are also included in this section.
• DISASSEMBLY AND ASSEMBLY
  This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
• MAINTENANCE STANDARD
  This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.

PLEASE NOTE:

⦁ This is not a physical manual but a digital manual – meaning no physical copy will be couriered to you. The manual can be yours in the next 2 mins as once you make the payment, you will be directed to the download page IMMEDIATELY.
⦁ This is the same manual used by the dealers inorder to diagnose your vehicle of its faults.
⦁ Require some other service manual or have any queries: please WRITE to us at [email protected]