HYDRAULIC EXCAVATOR PC750-6 PC800-6 Shop Manual

MAIN MENU
COVER
CONTENTS
01 GENERAL
Specification drawings
Specifications
Weight table
Fuel, coolant and lubricants
10 STRUCTURE AND FUNCTION
PTO
PTO lubrication system
Radiator, oil cooler, aftercooler
Power train
Swing machinery
Swing circle
Final drive
Track frame
Track shoe
Air piping diagram
Air circuit diagram
Air governor
Air tank
Safety valve
Horn valve
Grease pump
Hydraulic piping drawing
Hydraulic circuit drawing
Hydraulic tank
Hydraulic pump
Line oil filter
Pilot oil filter
Return oil filter
Drain oil filter
L.H. 5-spool control valve
R.H. 4-spool control valve
Swing motor
Center swivel joint
Travel motor
PPC control relief valve
Safety lock valve
Accumulator
Valve control
Work equipment, swing PPC valve
Travel PPC valve
Solenoid valve assembly
Work equipment
Air conditioner
Actual electric wiring diagram
Electric circuit diagram
Engine control
Electronic control system
Machine monitor system
20 TESTING AND ADJUSTING
Standard value table for engine related parts
Standard value table for chassis related parts
Standard value table for electrical parts
Tools for testing, adjusting, and troubleshooting
Measuring engine speed
Measuring air supply pressure (boost pressure)
Measuring exhaust temperature
Measuring exhaust color
Adjusting valve clearance
Measuring compression pressure
Measuring blow-by pressure
Testing and adjusting fuel injection timing
Measuring engine oil pressure
Testing and adjusting alternator belt tension
Testing and adjusting fan belt tension
Testing and adjusting belt tension for air conditioner compressor
Testing and adjusting governor motor lever stroke
Adjusting engine speed sensor
Testing and adjusting hydraulic pressure in work equipment, swing, travel circuit
Testing and adjusting control pump circuit oil pressure
Testing and adjusting piston pump control pressure
Measuring servo piston stroke
Measuring PPC valve output pressure and testing PPC shuttle valve
Testing solenoid valve output pressure
Adjusting work equipment swing PPC valve
Testing travel deviation
Testing locations causing hydraulic drift of work equipment
Measuring oil leakage
Testing clearance of swing circle bearing
Testing and adjusting track shoe tension
Bleeding air
TROUBLESHOOTING
30 DISASSEMBLY AND ASSEMBLY
METHOD OF USING MANUAL
PRECAUTIONS WHEN CARRYING OUT OPERATION
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARTING MOTOR ASSEMBLY Removal, Installation
ALTERNATOR ASSEMBLY Removal, Installation
NOZZLE HOLDER ASSEMBLY Removal, Installation
ENGINE OIL COOLER ASSEMBLY Removal, Installation
FUEL INJECTION PUMP ASSEMBLY Removal, Installation
WATER PUMP ASSEMBLY Removal, Installation
TURBOCHARGER ASSEMBLY Removal, Installation
THERMOSTAT ASSEMBLY Removal, Installation
AIR COMPRESSOR ASSEMBLY Removal, Installation
ENGINE FRONT SEAL Removal, Installation
ENGINE REAR SEAL Removal, Installation
GOVERNOR MOTOR ASSEMBLY Removal, Installation
CYLINDER HEAD ASSEMBLY Removal, Installation
AFTERCOOLER CORE Removal, Installation
FAN GUARD, RADIATOR, HYDRAULIC COOLER ASSEMBLY Removal, Installation
HYDRAULIC COOLER, AFTERCOOLER ASSEMBLY Removal, Installation
ENGINE, PTO, HYDRAULIC PUMP ASSEMBLY Removal, Installation
PTO ASSEMBLY Removal, Installation
PTO ASSEMBLY Disassembly, Assembly
FINAL DRIVE ASSEMBLY Removal, Installation
FINAL DRIVE ASSEMBLY Disassembly, Assembly
REVOLVING FRAME ASSEMBLY Removal, Installation
SWING MACHINERY ASSEMBLY Removal, Installation
SWING MACHINERY ASSEMBLY Disassembly, Assembly
SWING CIRCLE ASSEMBLY Removal, Installation
TRACK SHOE ASSEMBLY Removal, Installation
ONE LINK IN FIELD Disassembly, Assembly
SPROCKET Removal, Installation
IDLER ASSEMBLY Removal, Installation
IDLER ASSEMBLY Disassembly, Assembly
IDLER ADJUSTMENT CYLINDER ASSEMBLY Disassembly, Assembly
RECOIL SPRING ASSEMBLY Removal, Installation
RECOIL SPRING ASSEMBLY Disassembly, Assembly
CARRIER ROLLER ASSEMBLY Removal, Installation
CARRIER ROLLER ASSEMBLY Disassembly, Assembly
TRACK ROLLER ASSEMBLY Removal, Installation
TRACK ROLLER ASSEMBLY Disassembly, Assembly
TVC VALVE ASSEMBLY Removal, Installation
CO, NC VALVE ASSEMBLY Removal, Installation
SERVO VALVE ASSEMBLY Removal, Installation
NO. 1 PUMP ASSEMBLY Removal, Installation
NO. 2 PUMP ASSEMBLY Removal, Installation
MAIN PUMP INPUT SHAFT OIL SEAL Removal, Installation
CONTROL, PTO LUBRICATION PUMP ASSEMBLY Removal, Installation
MAIN RELIEF VALVE ASSEMBLY Removal, Installation
MAIN RELIEF VALVE ASSEMBLY Disassembly, Assembly
CONTROL PUMP RELIEF VALVE ASSEMBLY Removal, Installation
LEFT 5-SPOOL CONTROL VALVE ASSEMBLY Removal, Installation
RIGHT 4-SPOOL CONTROL VALVE ASSEMBLY Removal, Installation
CONTROL VALVE ASSEMBLY Disassembly, Assembly
SWING MOTOR ASSEMBLY Removal, Installation
CENTER SWIVEL JOINT ASSEMBLY Removal, Installation
CENTER SWIVEL JOINT ASSEMBLY Disassembly, Assembly
TRAVEL MOTOR ASSEMBLY Removal, Installation
WORK EQUIPMENT PPC VALVE ASSEMBLY Removal, Installation
WORK EQUIPMENT PPC VALVE ASSEMBLY Disassembly, Assembly
TRAVEL PPC VALVE ASSEMBLY Removal, Installation
TRAVEL PPC VALVE ASSEMBLY Disassembly, Assembly
BUCKET CYLINDER ASSEMBLY Removal, Installation
ARM CYLINDER ASSEMBLY Removal, Installation
BOOM CYLINDER ASSEMBLY Removal, Installation
BOTTOM DUMP CYLINDER ASSEMBLY Removal, Installation
HYDRAULIC CYLINDER ASSEMBLY Disassembly, Assembly
BUCKET ASSEMBLY Removal, Installation
ARM ASSEMBLY Removal, Installation
BOOM ASSEMBLY Removal, Installation
BUCKET, ARM ASSEMBLY Removal, Installation
WORK EQUIPMENT ASSEMBLY Removal, Installation
OPERATOR’S CAB ASSEMBLY Removal, Installation
COUNTERWEIGHT ASSEMBLY Removal, Installation
AIR CONDITIONER COMPRESSOR ASSEMBLY Removal, Installation
AIR CONDITIONER UNIT ASSEMBLY Removal, Installation
GOVERNOR, PUMP CONTROLLER ASSEMBLY Removal, Installation
MONITOR PANEL ASSEMBLY Removal, Installation
CONTROL STAND CASE Removal, Installation
40 MAINTENANCE STANDARD
Engine mount
PTO
Swing circle
Swing machinery
Final drive
Track frame
Idler
Carrier roller
Track roller
Track shoe
Hydraulic pump
Charging and PTO lubrication pump
L.H. 5-spool control valve
R.H. 4-spool control valve
Swing motor
Travel motor
Center swivel joint
PPC control relief valve
PPC valve
Hydraulic cylinder
Work equipment
Dimensions of work equipment
90 OTHERS
Hydraulic piping drawing (Back hoe)
Hydraulic piping drawing (Back hoe)
Hydraulic piping drawing (Loading shovel)
Hydraulic circuit drawing (Back hoe)
Hydraulic circuit drawing (Loading shovel)
Hydraulic piping drawing (Back hoe)
Hydraulic circuit drawing (Loading shovel)
Actual electric wiring diagram (1/2) (Back hoe)
Actual electric wiring diagram (2/2) (Back hoe)
Actual electric wiring diagram (1/2) (Loading shovel)
Actual electric wiring diagram (2/2) (Loading shovel)
Electric circuit diagram (1/3) (Back hoe)
Electric circuit diagram (2/3) (Back hoe)
Electric circuit diagram (3/3) (Back hoe)
Electric circuit diagram (1/3) (Loading shovel)
Electric circuit diagram (2/3) (Loading shovel)
Electric circuit diagram (3/3) (Loading shovel)
Electric circuit diagram (1/3) (Back hoe)
Electric circuit diagram (2/3) (Back hoe)
Electric circuit diagram (3/3) (Back hoe)
Electric circuit diagram (1/3) (Loading shovel)
Electric circuit diagram (2/3) (Loading shovel)
Electric circuit diagram (3/3) (Loading shovel)
Machine control system diagram
Connector arrangement diagram (1/2)
Connector arrangement diagram (2/2)