KOMATSU WD900-3 WHEEL DOZER REPAIR MANUAL SEBMW00601 PDF

Description

KOMATSU WD900-3 WHEEL DOZER SHOP MANUAL SEBMW00601 – PDF DOWNLOAD

FILE DETAILS:

KOMATSU WD900-3 WHEEL DOZER SHOP MANUAL SEBMW00601 – PDF DOWNLOAD

Language : English
Pages : 126
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

KOMATSU WD900-3 WHEEL DOZER SHOP MANUAL SEBMW00601 – PDF DOWNLOAD

COVER..............................................................................................  1
01 GENERAL.........................................................................................  2
	GENERAL ASSEMBLY DRAWING.......................................................................  3
	SPECIFICATIONS.................................................................................  4
	WEIGHT TABLE...................................................................................  7
	LIST OF LUBRICANT AND WATER....................................................................  9
10 STRUCTURE AND FUNCTION.......................................................................... 11
	TIRE AND WHEEL................................................................................. 12
	SWITCH PUMP.................................................................................... 13
	DIVERTER VALVE................................................................................. 16
	BRAKE CIRCUIT DIAGRAM.......................................................................... 20
	HYDRAULIC PIPING............................................................................... 23
	WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM....................................................... 25
	WORK EQUIPMENT LEVER LINKAGE................................................................... 38
	LUBRICATION OF WORK EQUIPMENT.................................................................. 39
	WORK EQUIPMENT LINKAGE......................................................................... 41
	ELECTRIC CIRCUIT DIAGRAM....................................................................... 43
	ENGINE STARTING CIRCUIT........................................................................ 45
	ENGINE STOP CIRCUIT............................................................................ 46
	ELECTRICAL TRANSMISSION CONTROL................................................................ 47
	BLADE CONTROL SWITCH........................................................................... 48
	ELECTRIC PARKING BRAKE CONTROL................................................................. 49
	BRAKE COOLING SYSTEM........................................................................... 58
20 TESTING AND ADJUSTING........................................................................... 61
	STANDARD VALUE TABLE........................................................................... 62
		STANDARD VALUE TABLE FOR ENGINE............................................................ 62
		STANDARD VALUE TABLE FOR CHASSIS........................................................... 63
		STANDARD VALUE TABLE FOR ELECTRICAL PARTS.................................................. 69
	TESTING AND ADJUSTING.......................................................................... 80
		BLEEDING AIR FROM STEERING CIRCUIT......................................................... 81
		TESTING WHEEL BRAKE PERFORMANCE............................................................ 82
		TESTING PARKING BRAKE PERFORMANCE.......................................................... 83
		TESTING AND ADJUSTING PPC PRESSURE......................................................... 84
		ADJUSTING PPC VALVE LINKAGE................................................................ 86
		TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE.................................... 87
		BLEEDING AIR FROM WORK EQUIPMENT CIRCUIT................................................... 89
	TROUBLESHOOTING................................................................................ 90
		CONNECTOR TYPES AND MOUNTING LOCATIONS..................................................... 91
		CONNECTOR ARRANGEMENT DIAGRAM.............................................................. 94
		TROUBLESHOOTING OF TRANSMISSION CONTROLLER SYSTEM(T MODE).................................. 99
			ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION CONTROLLER SYSTEM..........................100
			T-13 KICK-DOWN SIGNAL SYSTEM AND SHIFT-DOWN SIGNAL SYSTEM(JOYSTICK(OP)MANUAL SHIFT)....102
		TROUBLESHOOTING OF MAIN MONITOR SYSTEM(M MODE).............................................103
			ELECTRICAL CIRCUIT DIAGRAM OF MACHINE MONITOR SYSTEM...................................105
		TROUBLESHOOTING OF ELECTRICAL SYSTEM(E MODE)...............................................107
			E-9 KICK-DOWN SWITCH DOES NOT WORK.....................................................108
				a) KICK-DOWN SWITCH DOES NOT WORK EVEN THOUGH GEAR SHIFT WORKS NORMALLY............108
				b) KICK-DOWN CANNOT BE CANCELED....................................................109
		TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM(H MODE).................................110
			H-16 BLADE DOES NOT RISE...............................................................111
			H-17 BLADE MOVES SLOWLY OR DOES NOT HAVE SUFFICIENT LIFTING POWER......................112
			H-18 WHEN RAISING BLADE,BECOMES SLOW AT CERTAIN HEIGHT.................................113
			H-19 LIFT CYLINDER CANNOT HOLD DOWN BUCKET.............................................113
			H-20 BLADE HAS LARGE AMOUNT OF HYDRAULIC DRIFT.........................................113
			H-21 BLADE FLUCTUATES WHILE WORKING....................................................114
			H-22 BLADE DROPS MOMENTARILY WHEN LEVER IS OPERATED FROM HOLD TO RAISE.................114
			H-23 BLADE DOES NOT TILT...............................................................115
			H-24 BLADE IS MOVES SLOWLY OR HAS INSUFFICIENT TILT....................................116
			H-25 BLADE MOVEMENT BECOMES SLOW DURING TILT...........................................117
			H-26 LIFT CYLINDER CANNOT HOLD DOWN BLADE..............................................117
			H-27 BLADE HAS LARGE AMOUNT OF HYDRAULIC DRIFT.........................................117
			H-30 BLADE CONTROL LEVER DO NOT MOVE SMOOTHLY..........................................118
40 MAINTENANCE STANDARD............................................................................119
	HYDRAULIC CYLINDER.............................................................................120
	WORK EQUIPMENT LINKAGE.........................................................................122

DESCRIPTION:

KOMATSU WD900-3 WHEEL DOZER SHOP MANUAL SEBMW00601 – PDF DOWNLOAD

• The work equipment system consists oi the hydraulic circuit and steering circuit. The hydraulic circuit controls the operation of the blade.
• The on from hydraulic tank is sent iron main pump l2). and switch pump is) through the steering valve to main control valve i7 i. If the blade and lift spool of the main control valve are in neutral. the oil passes through the drain circuit of the main control valve, is filtered by the filter inside the hydraulic tank. and returns to the tank
• The blade or lii‘t spool in P90 valve is activated by operating the work equipment control lever, causing each spool in the work equipment valve to be hydraulically activated. Thereby, the oil is allowed to flow from the work equipment valve to lift cylinder, thus operating the blade .
• The maximum pressure of the hydraulic circuit is regulated by the relief valve inside the main control valve. There are two safety valves (with suction valve) and an unloader valve in the lift cylinder circuit to protect the circuit.
  Even when engine is at rest. the blade can be lowered to the ground because accumu. later is provided in the circuit. Hydraulic tank is a pressurized. sealed type and has a breather with a relief valve. This act: to pressurize the tank and at the same time prevents negative pressure. This protect: the pump from cavitation.
• In the hydraulic tank there is pressurizing valve installed to pressurite the hydraulic tank with air pressure. it is used to carry out air bleeding of the pump when changing the all inside the tank or when assembling after removing the piping of the piston pump and pump.

S.S 18/12/24