Komatsu Mini Excavator PC75UU-2 service & repair manual

Description Komatsu Mini Excavator PC75UU-2 service & repair manual

Komatsu Mini Excavator PC75UU-2 pdf workshop service repair manual + operation & maintenance manual

Serial number 5001 and up

MANUAL CONTENT:
GENERAL
General assembly drawing
Specifications
Weight table
List of lubricant and water

STRUCTURE AND FUNCTION
Hydraulic piping diagram
Hydraulic circuit diagram
Electric wiring diagram
Electric circuit diagram

TESTING AND ADJUSTING
Table of judgement standard value
Standard value table for electrical parts
Tools for testing, adjusting, and troubleshooting
Measuring engine speed
Measuring engine oil pressure
Measuring compression pressure
Measuring blow-by
Adjusting valve clearance
Testing and adjusting fuel injection timing
Testing and adjusting alternator fan belt tension
Adjusting fuel control lever
Testing and adjusting track shoe tension
Testing and adjusting hydraulic pressure in work equipment swing, travel circuit
Testing conrol circuit pressure
Measuring output pressure of PPC valve
Adjusting PPC valve
Measuring outlet port pressure of solenoid valve, EPC valve
Measuring oil leakage inside cylinder
Measuring oil leakage from swing travel motor
Bleeding air from hydraulic circuit
Releasing remaining from hydraulic circuit
Adjusting blade control lever
Adjusting travel control lever
Procedure for resetting electrical system input output signals and checking operation
Procedure for replacing potentiometer
Procedure for checking diode
Trobleshooting

MAINTENANCE STANDARD
Swing machinery, Swing circle
Track frame, recoil spring
Idler
Track roller
Carrier roller
Track shoe
Hydraulic pump
3-spool control valve (for front pump)
3-spool control valve (for center pump)
4-spool control valve
Swing motor
Center swivel joint
PPC valve
Hydraulic cylinder
Work equipment

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