Technical Manual Hitachi ZW100-G, ZW120-G Wheel Loader | TO4FK-E-00

Technical Manual Hitachi ZW100-G, ZW120-G Wheel Loader TO4FK-E-00 (Preview)

TO4FL-E-00
INTRODUCTION
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
Group 1 Specifications
Specifications
Group 2 Component Layout
Main Component Layout (Upperstructure)
Main Component Layout (Travel System)
Electrical System (Overview)
Electrical System (Relay and Others)
Electrical System (In Canopy)
Electrical System (In Cab)
Electrical System (Relays)
Front Console (In Canopy)
Front Console (In Cab)
Monitor Panel (In Cab)
Engine
Pump Device
Transmission
Control Valve
Priority Valve
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Filter
Electrical Component
SECTION 2 SYSTEM
Group 1 Controller
Outline
Can (Network Provided for Machine)
MC: Main Controller
ECM: Engine Control Module
ICF: Information Controller
Monitor Unit
Group 2 Control System
Outline
HST Brake
HST Pump Control
Forward/Reverse Lever Control
HST Motor Control
Travel Immediate Slowdown Prevention Control
Matching Control
Overrunning Control
Engine Protection Control
Coolant Temperature Control
Transmission Control
Slow Travel Speed Selection Control
Other Controls
HST Failure Warning Control
Parking Brake Operation Warning Control
Group 3 ECM System
Outline
Engine Start Control
Engine Failure Warning Control
Engine Oil Pressure Warning Control
Overheat Warning Control
Group 4 Hydraulic System
Outline
Main Circuit
Steering Circuit
HST Circuit
Transmission Circuit
Group 5 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
Indicator Light Check Circuit (Key Switch: ON)
Preheat Circuit (Key Switch: ON)
Engine Starting Circuit (Key Switch: START)
Charging Circuit (Key Switch: ON)
Serge Voltage Prevention Circuit
Engine Stop Circuit
Lamplight Circuit
Light Lighting Circuit
Working Light Circuit
Turn Signal Circuit
Brake Light Circuit
Hazard Light Circuit
Horn Circuit
Parking Brake Circuit
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Outline
HST Pump
Displacement Angle Control Cylinder
Da Valve
Forward/Reverse Selection Solenoid Valve
Cutoff Valve
High-PressureRelief Valve
Low-PressureRelief Valve
HST Charging Pump
Main Pump, Transmission Charging Pump
Group 2 Control Valve
Outline
Hydraulic Circuit
Main Relief Valve
Overload Relief Valve (With Make-Up Function)
Group 3 Priority Valve
Outline
Operation
Group 4 Steering Valve
Outline
Structure
Operation
Group 5 HST Motor
Outline
Travel Motor
Regulator
Displacement Angle Control Solenoid Valve
Travel Control Solenoid Valve
Flushing Valve
Group 6 Transmission
Outline
Operation
Parking Brake
Travel Mode Selector Valve
Accumulator
Solenoid Valve
Group 7 Axle
Outline
Differential
Torque ProportioningDifferential (TPD)
Limit Slip Differential (LSD) (Optional)
Brake(Service Brake)
Final Drive/Axle Shaft
Group 8 Brake Valve
Outline
Structure
Operation
Group 9 Others
Inching Valve
Propeller Shaft
SERVICE MANUAL REVISION REQUEST FORM