Hitachi Excavator ZX110 to ZX135UR Technical Manual (Operational Principle) TO187-E-04

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Hitachi Excavator ZX110 to ZX135UR Technical Manual (Operational Principle) TO187-E-04
Size: 9.45 MB
Format: PDF
Language: English
Brand: Hitachi
Type of Machine: Excavator
Type of Manual: Technical Manual (Operational Principle)
Model: Hitachi ZX110, ZX125US, ZX110M, ZX135US, ZX120, ZX135UR, ZX130, ZX130LCN Excavator
Part Number: TO187-E-04
Number of Pages: 318 Pages

Contents:
SECTION 1 GENERAL

Specifications​

SPECIFICATIONS​

WORKING RANGES​

Component Layout​

MAIN COMPONENT LAYOUT​

ELECTRICAL COMPONENT LAYOUT (Overview)​

ELECTRICAL SYSTEM (Relays and Related Equipment)​

ELECTRICAL SYSTEM (Monitors and Switches)​

PUMP DEVICE​

SWING DEVICE​

CONTROL VALVE​

SIGNAL CONTROL VALVE​

SOLENOID VALVE UNIT​

8-UNIT SOLENOID VALVE UNIT​

BLADE CONTROL VALVE​

POSITIONING CONTROL VALVE​

TRAVEL DEVICE​

Component Specifications​

ZAXIS110/110M/125US/135UR​

ZAXIS120/130/130LCN/135US​

SECTION 2 SYSTEM

Control System​

OUTLINE​

ENGINE CONTROL​

PUMP CONTROL​

VALVE CONTROL​

OTHER CONTROLS​

Front Control System​

OUTLINE​

FRONT MOVEMENT CONTROL​

Hydraulic System​

OUTLINE​

PILOT CIRCUIT​

MAIN CIRCUIT​

Electrical System​

OUTLINE​

MAIN CIRCUIT​

ELECTRIC POWER CIRCUIT (KEY SWITCH: OFF)​

INDICATOR LIGHT CHECK CIRCUIT (KEY SWITCH: ON)​

ACCESSORY CIRCUIT​

PREHEAT CIRCUIT (KEY SWITCH: ON /START)​

STARTING CIRCUIT (KEY SWITCH:START)​

CHARGING CIRCUIT (KEY SWITCH: ON)​

ENGINE STOP CIRCUIT​

SERGE VOLTAGE PREVENTION CIRCUIT​

SECTION 3 COMPONENT OPERATION

Pump Device​

OUTLINE​

MAIN PUMP​

REGULATOR​

SOLENOID VALVE​

BLADE PUMP (ZAXIS135UR ONLY) PILOT PUMP​

N SENSOR (ENGINE SPEED SENSOR)​

PUMP DELIVERY PRESSURE SENSOR​

PUMP CONTROL PRESSURE SENSOR​

Swing Device​

OUTLINE​

SWING REDUCTION GEAR​

SWING MOTOR​

SWING PARKING BRAKE​

VALVE UNIT​

Control Valve​

OUTLINE​

HYDRAULIC CIRCUIT​

FLOW COMBINER VALVE​

MAIN RELIEF VALVE​

OVERLOAD RELIEF VALVE​

REGENERATIVE VALVE​

ANTI-DRIFT VALVE​

FLOW RATE CONTROL VALVE​

BYPASS SHUT-OUT VALVE​

AUXILIARY FLOW COMBINING VALVE​

Pilot Valve​

OUTLINE​

OPERATION​

Travel Device​

OUTLINE​

TRAVEL REDUCTION GEAR​

TRAVEL MOTOR​

PARKING BRAKE​

TRAVEL MODE CONTROL​

TRAVEL BRAKE VALVE​

Signal Control Valve​

OUTLINE​

PILOT PORT​

SHUTTLE VALVE​

SHOCKLESS VALVE​

PUMP 1 AND PUMP 2 FLOW RATE CONTROL VALVES​

BUCKET FLOW RATE CONTROL VALVE CONTROL SPOOL, FLOW COMBINER VALVE CONTROL SPOOL, SWING PARKING BRAKE RELEASE SPOOL​

Others (Upperstructure)​

PILOT SHUT-OFF VALVE​

SOLENOID VALVE UNIT​

OFFSET ANTI-DRIFT VALVE (ZAXIS 135UR ONLY)​

HOLDING VALVE​

PILOT RELIEF VALVE​

EC MOTOR​

Others (Undercarriage)​

SWING BEARING​

CENTER JOINT​

TRACK ADJUSTER​

SERVICE MANUAL REVISION REQUEST FORM