Technical Manual Hitachi ZW80, ZW90 Wheel Loader | TO4FG-E-00

Technical Manual Hitachi ZW80, ZW90 Wheel Loader TO4FG-E-00 (Preview)

TO4FG-E-00
INTRODUCTION
SECTION AND GROUPCONTENTS
SECTION 1 GENERAL
Group 1 Specifications
Specifications
Group 2 Component Layout
Main Component Layout (Overview)
Main Component Layout (Body)
Main Component Layout(Travel System)
Electrical System (Overview)
Electrical System (Inside of Cab)
Engine
HST Pump / Main Pump
Reduction Gear / HST Motor
Control Valve
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
SECTION 2 SYSTEM
Group 1 Control System
Outline
HST Control
Other Controls
Control by Electric and Hydraulic Combined Circuit
Group 2 Hydraulic System
Outline
Main Circuit
Steering Circuit
HST Circuit
Brake Circuit
Group 3 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
Head Light Circuit
Turn Signal Circuit
Brake Light Circuit
Hazard Light Circuit
Horn Circuit
Revrse Light / Buzzer Circuit
Parking Brake Circuit
Emergency Parking Brake Circuit
Indicator Circuit
SECTION 3 COMPONENT OPERATION
Group 1 Priority Valve
Outline
Structure
Operation
Group 2 Control Valve
Outline
Hydraulic Circuit
Operation
Main Relief Valve
Overload Relief Valve
Make-Up Valve
Group 3 Steering Valve
Outline
Structure
Operation
Overload Relief Valve
Make-Up Valve
Group 4 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
Group 5 HST Motor
Outline
Operation
Regulator
EP Motor Solenoid Valve
Group 6 Reduction
Outline
Construction
Group 7 Axle
Outline
Differential
Limited Slip Differential (LSD)(Optional)
Service Brake
Parking Brake
Final Drive / Axle Shaft
Group 8 Brake Master Cylinder
Outline
Structure
Operation
Group 9 Others
Gear Pump
Propeller Shaft
Parking Brake Solenoid Valve
SERVICE MANUAL REVISION REQUEST FORM