Technical Manual Hitachi ZW80 Wheel Loader | TO4FN-EN-00

Technical Manual Hitachi ZW80 Wheel Loader TO4FN-EN-00 (Preview)

TO4FN-EN-00
INTRODUCTION
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
GENERAL / Specifications
SPECIFICATIONS (STANDARD)
GENERAL / Component Layout
MAIN COMPONENT LAYOUT (OVERVIEW)
MAIN COMPONENT LAYOUT (BODY)
MAIN COMPONENT LAYOUT (TRAVEL SYSTEM)
ELECTRICAL SYSTEM (OVERVIEW)
ELECTRICAL SYSTEM (INSIDE OF CAB)
ENGINE
REDUCTION GEAR, HST MOTOR
CONTROL VALVE
GENERAL / Component Specifications
ENGINE
ENGINE ACCESSORIES
HYDRAULIC COMPONENT
ELECTRICAL COMPONENT
SECTION 2 SYSTEM
SYSTEM / Control System
OUTLINE
HST Control
OTHER CONTROLS
CONTROL BY ELECTRIC AND HYDRAULIC COMBINED CIRCUIT
SYSTEM / Hydraulic System
OUTLINE
MAIN CIRCUIT
STEERING CIRCUIT
HST CIRCUIT
BRAKE CIRCUIT
SYSTEM / Electrical System
OUTLINE
MAIN CIRCUIT
ELECTRIC POWER CIRCUIT (KEY SWITCH: OFF)
INDICATOR LIGHT CHECK CIRCUIT (KEY SWITCH: ON)
PREHEAT CIRCUIT (KEY SWITCH: HEAT)
STARTING CIRCUIT (KEY SWITCH: START)
CHARGING CIRCUIT (KEY SWITCH: ON)
ENGINE STOP CIRCUIT
LAMPLIGHT CIRCUIT
HEADLIGHT CIRCUIT
TURN SIGNAL CIRCUIT
BRAKE LIGHT CIRCUIT
HAZARD LIGHT CIRCUIT
HORN CIRCUIT
REVERSE LIGHT / BUZZER CIRCUIT
PARKING BRAKE CIRCUIT
EMERGENCY PARKING BRAKE CIRCUIT
INDICATOR CIRCUIT
SECTION 3 COMPONENT OPERATION
COMPONENT OPERATION / Priority Valve
OUTLINE
STRUCTURE
OPERATION
COMPONENT OPERATION / Control Valve
OUTLINE
HYDRAULIC CIRCUIT
OPERATION
MAIN RELIEF VALVE
OVERLOAD RELIEF VALVE (WITH MAKE-UP FUNCTION)
MAKE-UP VALVE
COMPONENT OPERATION / Steering Valve
OUTLINE
STRUCTURE
OPERATION
OVERLOAD RELIEF VALVE
MAKE-UP VALVE
COMPONENT OPERATION / HST Pump
OUTLINE
FORWARD/REVERSE SELECTION SOLENOID VALVE
DE PUMP SOLENOID VALVE
CUTOFF VALVE
HIGH-PRESSURE RELIEF VALVE

LOW-PRESSURE RELIEF VALVE
HST CHARGING PUMP

COMPONENT OPERATION / HST Motor
OUTLINE
OPERATION
REGULATOR
EP MOTOR SOLENOID VALVE
COMPONENT OPERATION / Reduction
OUTLINE
CONSTRUCTION
COMPONENT OPERATION / Axle
OUTLINE
DIFFERENTIAL
LIMITED SLIP DIFFERENTIAL (LSD) (OPTIONAL)
SERVICE BRAKE
PARKING BRAKE
FINAL DRIVE / AXLE SHAFT
COMPONENT OPERATION / Brake Master Cylinder
OUTLINE
STRUCTURE
OPERATION
COMPONENT OPERATION / Others
GEAR PUMP
PROPELLER SHAFT
PARKING BRAKE SOLENOID VALVE
SERVICE MANUAL REVISION REQUEST FORM