Komatsu PC100-6 / PC120-6 excavator, repair e-manual

Contents

Safety

General

• General assembly drawing
• Specifications
• Weight table
• List of lubricant and water

Structure and function

• Radiator and oil cooler
• PTO (Coupling)
• Power train
• Swing circle
• Swing machinery
• Track frame
• Idler
• Idler cushion
• Carrier roller
• Track roller
• Track shoe
• Hydraulic piping drawing
• Hydraulic circuit diagram
• Hydraulic tank
• Hydraulic pump
• Control valve
• CLSS
• Swing motor
• Center swivel joint
• Travel motor
• Valve control
• Work equipment
• Travel PPC valve
• Service PPC valve
• Safety lock valve
• PPC accumulator
• PPC shuttle
• EPC
• Boom holding valve
• Hydraulic cylinder
• Accumulator for breaker
• Additional filter for breaker
• Electrical wiring diagram
• Electrical circuit diagram
• Engine control system
• Electronic control system
• Machine monitor system

Testing and adjusting

• Table of judgement standard value
• Standard value table for electrical parts
• Tools for testing, adjusting, and troubleshooting
• Measuring engine speed
• Measuring exhaust gas color
• Adjusting valve clearance
• Measuring compression pressure
• Measuring blowby pressure
• Testing and adjusting fuel injection timing
• Measuring engine oil pressure
• Testing and adjusting fan belt tension
• Testing and adjusting belt tension for air conditioner compressor
• Adjusting engine speed sensor
• Testing and adjusting governor motor lever stroke
• Testing clearance of swing circle bearing
• Testing and adjusting track shoe tension
• Testing and adjusting hydraulic pressure in work equipment, swing, travel circuit
• Testing and adjusting TVC valve output pressure (Servo piston input pressure)
• Testing and adjusting LS valve output pressure (Servo piston input pressure) and LS differential pressure
• Testing and adjusting variable throttle valve
• Testing and adjusting control pump circuit oil pressure
• Testing EPC valve solenoid valve output pressure
• Measuring PPC valve output pressure and testing PPC shuttle valve
• Adjusting work equipment l swing PPC valve
• Adjusting travel lever
• Testing travel deviation
• Testing locations causing hydraulic drift of work equipment
• Measuring oil leakage
• Releasing remaining pressure in hydraulic circuit
• Bleeding air
• Troubleshooting

Disassembly and assembly

• Special tool
• Alternator
• Starting motor
• Air conditioner compressor
• Condenser
• Engine oil cooler core
• Fuel injection pump
• Water pump
• Nozzle holder
• Turbocharger
• Thermostat
• Engine oil seal
• Governor motor
• Cylinder head
• Hydraulic pump
• Hydraulic oil cooler
• Fuel tank
• Center swivel joint
• Sprocket
• Travel motor
• Swing machinery
• Swing motor
• Revolving frame
• Swing circle
• Idler
• Recoil spring
• Track roller
• Carrier roller
• Track shoe
• Hydraulic tank
• Control pump
• Main pump
• Control valve
• Select valve
• Shuttle valve
• Pressure compensation valve
• Main relief valve
• TVC
• Control EPC valve
• Solenoid valve
• Work equipment
• Travel PPC valve
• Boom holding valve
• Boom cylinder
• Arm cylinder
• Bucket cylinder
• Hydraulic cylinder
• Bucket
• Arm
• Operator’s cab
• Counterweight
• Engine throttle controller
• Pump controller
• Monitor

Maintenance standard

• Swing machinery
• Swing circle
• Track frame
• Idler
• Carrier roller
• Track roller
• Sprocket
• Track sho
• Hydraulic pump
• Control valve
• Swing motor
• Center swivel joint
• Work equipment l swing PPC valve
• Travel PPC valve
• Service PPC valve
• PPC shuttle l travel junction valve
• EPC solenoid valve
• Boom holding valve
• Hydraulic cylinder
• Work equipment

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