Download Komatsu SA6D125 2 PDF

TitleKomatsu SA6D125 2
File Size20.5 MB
Total Pages366
Table of Contents
                            COVER
CONTENTS
01 GENERAL
	APPLICABLE MACHINE
	SPECIFICATIONS
	GENERAL ASSEMBLY DRAWING
	ENGINE PERFORMANCE CURVE
	WEIGHT TABLE
11 STRUCTURE AND FUNCTION
	GENERAL STRUCTURE
	INTAKE AND EXHAUST SYSTEM
		INTAKE AND EXHAUST SYSTEM
		AIR CLEANER
		TURBOCHARGER
		AFTERCOOLER
	ENGINE BODY
		CYLINDER HEAD
		CYLINDER BLOCK
		MAIN CIRCULATION PART
		TIMING GEAR
		VALVE SYSTEM
		FLYWHEEL AND FLYWHEEL HOUSING
	LUBRICATION SYSTEM
		LUBRICATION SYSTEM CHART
		OIL PUMP
		REGULATOR VALVE
		OIL FILTER
		BYPASS FILTER
		OIL COOLER
	FUEL SYSTEM
		FUEL SYSTEM CHART
		FUEL INJECTION PUMP
		FUEL 2-STAGE SET CONTROL MOTOR MOUNT
		ENGINE STOP MOTOR,2-STAGE SET CONTROL MOTOR
		MAGNETIC SWITCH AND FUEL SOLENOID
		BOOST COMPENSATOR
		FUEL INJECTION NOZZLE
		FUEL FILTER
	COOLING SYSTEM
		COOLING SYSTEM CHART
		WATER PUMP
		THERMOSTAT
		CORROSION RESISTOR
		FAN DRIVE
	ELECTRICAL SYSTEM
		ALTERNATOR
		STARTING MOTOR
		ELECTRICAL INTAKE AIR HEATER
	ACCESSORY
		AIR COMPRESSOR
12 TESTING AND ADJUSTING
	ADJUSTING ENGINE SPEED SENSOR
	ENGINE BODY
		ADJUSTING VALVE CLEARANCE
		MEASURING COMPRESSION PRESSURE
	FUEL SYSTEM
		TESTING AND ADJUSTING FUEL INJECTION TIMING
		TESTING AND ADJUSTING FUEL CUT SOLENOID
		ADJUSTING ENGINE STOP MOTOR LEVER
		FUEL INJECTION PUMP CALIBRATION DATA
	PERFORMANCE TEST
		RUN-IN STANDARD
		PERFORMANCE TEST CRITERIA
	TROUBLESHOOTING
		POINTS TO REMEMBER WHEN TROUBLESHOOTING
		METHOD OF USING TROUBLESHOOTING CHART
		S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)
		S-2 ENGINE DOES NOT START
			(1) ENGINE DOES NOT TURN
			(2) ENGINE TURNS BUT NO EXHAUST GAS COMES OUT (FUEL IS NOT BEING INJECTED)
			(3) EXHAUST GAS COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)
		S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)
		S-4 ENGINE STOPS DURING OPERATIONS
		S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)
		S-6 ENGINE LACKS OUTPUT (NO POWER)
		S-7 EXHAUST GAS IS BLACK (INCOMPLETE COMBUSTION)
		S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST GAS IS BLUE)
		S-9 OIL BECOMES CONTAMINATED QUICKLY
		S-10 FUEL CONSUMPTION IS EXCESSIVE
		S-11 OIL IS IN COOLING WATER,OR WATER SPURTS BACK,OR WATER LEVEL GOES DOWN
		S-12 OIL PRESSURE LAMP LIGHTS UP (DROP IN OIL PRESSURE)
		S-13 OIL LEVEL RISES
		S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)
		S-15 ABNORMAL NOISE IS MADE
		S-16 VIBRATION IS EXCESSIVE
	TESTING AND ADJUSTING TOOL LIST
	TESTING AND ADJUSTING DATA
13 DISASSEMBLY AND ASSEMBLY
	DISASSEMBLY
		SPECIAL TOOL LIST
			1.STARTING MOTOR ASSEMBLY
			2.ENGINE OIL COOLER
			3.RESETTING TO TOOL A1 (OVERHAUL STAND)
			4.FAN
			5.ENGINE MOUNTS
			6.AIR CLEANER,BRACKET ASSEMBLY
			7.TURBOCHARGER,EXHAUST MANIFOLD ASSEMBLY
			8.CORROSION RESISTOR AND PIPING,WIRING
			9.ENGINE OIL FILTER
			10.LUBRICATION VALVE
			11.FUEL FILTER ASSEMBLY
			12.FUEL INJECTION PIPES
			13.AFTERCOOLER ASSEMBLY
			14.FUEL INJECTION PUMP
			15.ALTERNATOR ASSEMBLY
			16.THERMOSTAT HOUSING,WATER PUMP
			17.FAN PULLEY,DRIVE ASSEMBLY
			18.FRONT SUPPORT
			19.CRANKSHAFT PULLEY,VIBRATION DAMPER
			20.AIR VENT TUBE,SPILL PIPE
			21.HEAD COVERS
			22.NOZZLE HOLDERS
			23.ROCKER ARMS
			24.CROSSHEADS
			25.PUSH RODS
			26.ROCKER ARM HOUSINGS
			27.CYLINDER HEAD ASSEMBLIES
			28.OIL PAN
			29.FLYWHEEL
			30.REAR SEAL
			31.FLYWHEEL HOUSING
			32.FRONT COVER
			33.FUEL INJECTION PUMP DRIVE GEAR
			34.CAM FOLLOWER COVERS
			35.CAM FOLLOWERS
			36.CAMSHAFT
			37.OIL PUMP
			38.IDLER GEAR
			39.OIL SUCTION PIPE
			40.PISTON AND CONNECTING ROD ASSEMBLY
			41.CRANKSHAFT
			42.PISTON COOLING NOZZLE
			43.CYLINDER LINER
	ASSEMBLY
		1.CYLINDER LINER
		2.PISTON COOLING NOZZLE
		3.CRANKSHAFT
		4.PISTON AND CONNECTING ROD ASSEMBLY
		5.OIL SUCTION PIPE
		6.IDLER GEAR
		7.OIL PUMP
		8.CAMSHAFT
		9.CAM FOLLOWERS
		10.CAM FOLLOWER COVERS
		11.DRIVE GEAR OF FUEL INJECTION PUMP
		12.FUEL INJECTION PUMP ASSEMBLY
		13.ADJUSTING FUEL INJECTION TIMING
		14.FRONT COVER
		15.CRANKSHAFT PULLEY,VIBRATION DAMPER
		16.FLYWHEEL HOUSING
		17.REAR SEAL
		18.FLYWHEEL
		19.OIL PAN
		20.CYLINDER HEAD ASSEMBLIES
		21.ROCKER ARM HOUSINGS
		22.PUSH RODS
		23.CROSSHEADS
		24.ROCKER ARMS
		25.ADJUSTING VALVE CLEARANCE
		26.NOZZLE HOLDERS
		27.HEAD COVERS
		28.SPILL PIPE,AIR VENT TUBE
		29.PULLEY,FRONT SUPPORT
		30.DRIVE SENSOR,TUBES,BRACKET
		31.WATER PUMP,THERMOSTAT HOUSING
		32.ALTERNATOR ASSEMBLY
		33.ADJUSTING V-BELTS
		34.AFTERCOOLER ASSEMBLY
		35.FUEL INJECTION PUMP PIPING
		36.LUBRICATION VALVE
		37.ENGINE OIL FILTER
		38.CORROSION RESISTOR
		39.TURBOCHARGER,EXHAUST MANIFOLD ASSEMBLY
		40.AIR CLEANER
		41.ENGINE MOUNTS
		42.FAN
		43.RESETTING ENGINE IN ENGINE STAND
		44.ENGINE OIL COOLER ASSEMBLY
		45.STARTING MOTOR ASSEMBLY
		・REFILLING WITH OIL
14 MAINTENANCE STANDARD
	TURBOCHARGER
	CYLINDER HEAD
	VALVE AND VALVE GUIDE
	ROCKER ARM SHAFT
	CROSSHEAD
	CYLINDER BLOCK
	CYLINDER LINER
	CRANKSHAFT
	CAMSHAFT
	CAM FOLLOWER AND PUSH ROD
	TIMING GEAR
	PISTON,PISTON RING AN PISTON PIN
	CONNECTING ROD
	VIBRATION DAMPER
	FLYWHEEL AND FLYWHEEL HOUSING
	WATER PUMP AND THERMOSTAT
	OIL COOLER
	OIL PUMP
	MAIN RELIEF VALVE
	REGULATOR VALVE AND SAFETY VALVE
	AIR COMPRESSOR
15 REPAIR AND REPLACEMENT OF PARTS
	REPLACING VALVE SEAT INSERTS
	REPLACING NOZZLE HOLDER SLEEVE
	REPLACING VALVE GUIDE
	REPLACING CROSS HEAD GUIDE
	GRINDING THE VALVE
	GRINDING OF FITTING FACE OF CYLINDER HEAD
	REPLACING CAM BUSHING
	REPLACING CAM GEAR
	REPLACING FLYWHEEL RING GEAR
	PRESSURE TEST
	REPLACING ENGINE REAR SEAL
	REPLACING CONNECTING ROD SMALL END BUSHING
	REPLACING MAIN BEARING CAP
	GRINDING CRANKSHAFT
	REPLACING WEAR SLEEVE (WHEN EQUIPPED WITH SLEEVE)
                        

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