Technical Manual Hitachi ZW80-5B Wheel Loader | TONCH60-EN-00 (2019.04.15)

Technical Manual Hitachi ZW80-5B Wheel Loader TONCH60-EN-00 (2019.04.15) (Preview)

TONCH60-EN-00
INTRODUCTION
SYMBOL AND ABBREVIATION
SECTION AND GROUP CONTENTS
SECTION 1GENERAL
Group 1 Specifications
Standard Specifications (Canopy Vehicle)
Standard Specifications (Cab Vehicle)
Group 2 Component Layout
Main Component (Overview)
Electrical System (Overview)
Electrical System (Cab Vehicle)
Engine
Pump Device
Control Valve
HST Motor/Reduction Gear/Axle
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
SECTION 2SYSTEM
Group 1 Controller
Outline
CAN Circuit
Group 2 Control System
Outline
Engine Control
HST Pump/Motor Control
Other Control
Group 3 ECM System
Outline
Fuel Injection Control
EGR Control
Engine Trouble Alarm Control
Engine Oil Pressure Alarm Control
Overheat Alarm Control
Group 4 Hydraulic System
Outline
Main Circuit
HST Circuit
Brake Circuit
Group 5 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
CAN Circuit
Light Bulb Check Circuit (Key Switch: ON)
Preheating Circuit (Key Switch: ON)
Engine Starting Circuit (Key Switch: START)
Charging Circuit (Key Switch: ON)
Surge Voltage Prevention Circuit (Key Switch: OFF)
Engine Stop Circuit (Key Switch: OFF)
Light/Horn Circuit/Parking Brake Circuit
Light Circuit
Work Light Circuit (Cab Vehicle)
Turn Signal Light Circuit
Hazard Light Circuit
Brake Light Circuit
Horn Circuit
Reverse Light/Reverse Buzzer Circuit
Parking Brake Circuit
Accessory Circuit
Wiper/Washer Circuit (Cab Vehicle)
Cab Light Circuit (Cab Vehicle)
SECTION 3COMPONENT OPERATION
Group 1 Pump Device
Outline
HST Pump
Operational Principle
Displacement Cylinder
When in Neutral
DA Valve
Forward/Reverse Selector Control Solenoid Valve
Cutoff Valve
High-Pressure Relief Valve
Low-Pressure Relief Valve
HST Charge Pump
Main Pump
Group 2 Control Valve
Outline (Manually Operated Type)
Hydraulic Circuit
Main Relief Valve
Overload Relief Valve (Bucket Side)
Make-Up Valve
Group 3 Priority Valve
Outline
Operation
Group 4 Steering Valve
Outline
Structure
Operation
Overload Relief Valve
Make-Up Valve
Group 5 HST Motor
Outline
Travel Motor
Regulator
Displacement Angle Control Solenoid Valve
Motor Displacement Angle Control
Group 6 Reduction Gear
Outline
Structure
Group 7 Axle
Outline
Differential
Torque Proportioning Differential (TPD)
Limited Slip Differential (LSD) (Optional)
Service Brake
Parking Brake
Final Drive / Axle Shaft
Group 8 Brake Master Cylinder
Outline
Structure
Operation
Group 9 Others
Propeller Shaft
Inching Valve
Parking Brake Solenoid Valve
HST Cooler Relief Valve
Filter
SERVICE MANUAL REVISION REQUEST FORM