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 manual + operation & maintenance manual

Serial number 5001 and up

Specifications, testing, adjusting, troubleshooting, technical documentation, electrical wiring diagrams, hydraulic schematics, assembly, disassembly, removal, installation instructions and other information

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

DISASSEMBLY AND ASSEMBLY
METHOD OF USING MANUAL
PRECAUTIONS WHEN CARRYING OUT OPERATION
SPECIAL TOOLS LIST
SCHEMATIC DRAWING OF SPECIAL TOOL
STARTING MOTOR
ALTERNATOR
FUEL INJECTION PUMP
WATER PUMP
NOZZLE HOLDER
THERMOSTAT
ENGINE FRONT SEAL
ENGINE REAR SEAL
CYLINDER HEAD
HYDRAULIC OIL COOLER
RADIATOR
ENGINE AND MAIN PUMP
DAMPER
CENTER SWIVEL JOINT
TRAVEL MOTOR
SPROCKET
SWING MOTOR AND SWING MACHINERY
SWING MOTOR
SWING MACHINERY
REVOLVING FRAME
SWING CIRCLE
IDLER AND RECOIL SPRING
IDLER
RECOIL SPRING
TRACK ROLLER
RUBBER SHOE
STEEL SHOE AND ROAD LINER
PPC PUMP
MAIN PUMP
3-SPOOL CONTROL VALVE
4-SPOOL CONTROL VALVE
MAIN RELIEF VALVE
PPC VALVE ASSEMBLY ON LEFT SIDE OF WORK EQUIPMENT
PPC VALVE ON RIGHT SIDE OF WORK EQUIPMENT
WORK EQUIPMENT PPC VALVE
PPC VALVE FOR OFFSET OPERATION
ARM CYLINDER
BUCKERT CYLINDER
BOOM CYLINDER
OFFSET CYLINDER
BLADE CYLINDER
HYDRAULIC CYLINDER
WORK EQUIPMENT
BUCKET
ARM
2ND BOOM
BUCKET AND ARM
1ST BOOM
BLADE
OPERATOR'S CAB
FLOOR FRAME
FUEL TANK
CONTROLLER
MONITOR
COUNTERWEIGHT

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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