Technical Manual Hitachi ZX470-5G, ZX470LC-5G, ZX470H-5G, ZX470LCH-5G, ZX470R-5G, ZX470LCR-5G | TOJAC-EN-00

Technical Manual Hitachi ZX470-5G, ZX470LC-5G, ZX470H-5G, ZX470LCH-5G, ZX470R-5G, ZX470LCR-5G TOJAC-EN-00 (Preview)

TOJAC-EN-00
INTRODUCTION
Symbol and Abbreviation
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
Group 1 Specifications
Specifications
Working Ranges
Group 2 Component Layout
Main Component
Electrical System (Overview)
Electrical System (Rear Tray)
Electrical System (Switch Panel)
Electrical System (Cab Behind Side)
Isolation Switch (Optional)
Engine
Pump Device
Control Valve
Check Valve / Accumulator
Signal Control Valve
4-Spool Solenoid Valve Unit
2-Spool Solenoid Valve Unit
Layout of Attachment Spec. Parts (Hydraulic System)
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
SECTION 2 SYSTEM
Group 1 Controller
Outline
CAN Circuit
Group 2 Control System
Outline
Engine Control
Pump Control
Valve Control (Standard)
Other Control
Group 3 Hydraulic System
Outline
Pilot Circuit
Main Circuit
Breaker/Pulverizer/Crusher Circuit (Optional)
Group 4 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
CAN Circuit
Accessory Circuit
Preheating Circuit (Key Switch: ON, START)
Starting Circuit (Key Switch: START)
Charging Circuit (Key Switch: ON)
Surge Voltage Prevention Circuit.
Pilot Shut-Off Circuit (Key switch: ON)
Engine Stop Circuit
Monitor Circuit
Security Circuit
Radio Circuit
Air Conditioner Circuit
Accessory Circuit
Work Light Circuit
Wiper/Washer Circuit
Cab Light Circuit
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Outline
Main Pump
Regulators
Pilot Pump
N Sensor (Engine Speed Sensor)
Pump Delivery Pressure Sensor
Pump Displacement Angle Sensor
Group 2 Swing Device
Outline
Swing Reduction Gear
Swing Motor
Swing Parking Brake
Valve Unit
Group 3 Control Valve
Outline
Hydraulic Circuit
Flow Combiner Valve
Main Relief Valve
Overload Relief Valve (with Make-Up Function)
Boom Overload Relief Valve (Low Pressure)
Regenerative Valve
Anti-Drift Valve
Flow Rate Control Valve
Boom Lower Meter-In Cut Valve
Bypass Shut-Out Valve
Auxiliary Flow Combiner Valve
Group 4 Pilot Valve
Outline
Operation (Front Attachment / Swing and Travel Pilot Valves)
Operation (Auxiliary / Counterweight Removaland Installation Pilot Valve)
Shockless Function (Only for Travel Pilot Valve)
Group 5 Travel Device
Outline
Travel Reduction Gear
Travel Motor
Parking Brake
Travel Brake Valve
Overload Relief Valve
Travel Mode Control
Group 6 Signal Control Valve
Outline
Pilot Port
Shuttle Valve
Shockless Valve
Pump 1 Flow Rate Control Valve, Pump 2Flow Rate Control Valve
Arm Flow Rate Control Valve Control Spool, Flow Combiner Valve Control Spool, Swing Parking Brake Release Spool
Group 7 Others (Upperstructure)
Pilot Shut-Off Solenoid Valve
Solenoid Valve
Fan Motor
Fan Valve
Pilot Relief Valve
Shockless Valve
Accumulator
Distribution Valve
Group 8 Others (Undercarriage)
Swing Bearing
Center Joint
Track Adjuster
SERVICE MANUAL REVISION REQUEST FORM