Technical Manual Hitachi ZX145W-3 Wheeled Excavator | TOCFA-E-00

Technical Manual Hitachi ZX145W-3 Wheeled Excavator TOCFA-E-00 (Preview)

TOCFA-E-00
INTRODUCTION
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
Group 1 Specifications
Specifications
Working Ranges
Group 2 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
Group 3 Component Layout
Main Component Layout
Electrical System (Overview)
Electrical System (Monitors and Switches)
Electrical System (Controllers and Relays)
Engine
Pump Device
Swing Device
Signal Control Valve
Control Valve
Brake Valve
4-Spool Solenoid Valve Unit
Solenoid Valve Unit (For Electric Lover)
Travel Shockless Valve
TransmissionChangeover Solenoid Valve
Travel Device
Filter
SECTION 2 SYSTEM
Group 1 Controller
Outline
Can: Controller Area Network (Network Provided for Machine)
MC: Main Controller
ECM: Engine Control Module
ICF: Information Controller
Monitor Unit
Option Controller
Steering Column Monitor
Group 2 Control System
Outline
Engine Control
Pump Control
Valve Control
Other Control
Option Controller Control
Electric and Hydraulic Composite Circuit Control
Group 3 ECM System
Outline
Fuel Injection Control
Fuel Injection Amount Correction Control
Preheating Control
EGR (Exhaust Gas Recirculation) Control
Engine Stop Control
Group 4 Hydraulic System
Outline
Pilot Circuit
Service Brake Circuit
Steering Circuit
Main Circuit
Group 5 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
Accessory Circuit
Starting Circuit (Key Switch: START)
Charging Circuit (Key Switch: ON)
Serge Voltage Prevention Circuit
Pilot Shut-Off Circuit (Key Switch: ON)
Security Lock Circuit
Engine Stop Circuit (Key Switch: OFF)
Security Horn Circuit
Wiper/Washer Circuit
Light Circuit
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Outline
Main Pump
Regulator
Solenoid Valve
Pilot Pump, Steering Pump
Pump Delivery Pressure Sensor
Pump Control Pressure Sensor
Group 2 Swing Device
Outline
Swing Reduction Gear
Swing Motor
Swing Parking Brake
Valve Unit
Group 3 Control Valve
Outline
Hydraulic Circuit
Main Relief Valve
Overload Relief Valve (with Make-Up Function)
Anti-Drift Valve
Regenerative Valve
Flow Rate Control Valve
Bypass Shut-Out Valve
Auxiliary Flow Combiner Valve
Group 4 Pilot Valve
Outline
Operation
Group 5 Electric Lever
Outline
Operation
Group 6 Transmission
Outline
Transmission
Shift Interlock Control
Shock Reducing Function
Disconnect Device
Group 7 Axle
Front Axle
Differential Gear
Reduction Gear
Steering Cylinder
Rear Axle
Group 8 Travel Motor
Outline
Rotor Section
Regulator
Overload Relief Valve
Travel Brake Valve
Group 9 Signal Control Valve
Outline
Pilot Port
Shuttle Valve
Shockless Valve
Pump 1 and Pump 2 Flow Rate Control Valves
Bucket Flow Rate Control Valve Control Spool, Swing Parking Brake Release Spool
Group 10 Steering Valve
Outline
Steering Valve
Operation
Overload Relief Valve
Make-Up Valve
Priority Valve
Operation
Relief Valve
Group 11 Brake Valve
Outline
Operation
Group 12 Others (Upperstructure)
Pilot Shut-Off Solenoid Valve
Transmission Changeover Solenoid Valve
Solenoid Valve
Travel Shockless Valve
Accumulator Charging Valve
Hose Rupture Valve
Accumulator
Pilot Relief Valve
Machine Height Control Valve(Optional)
Group 13 Others (Undercarriage)
Swing Bearing
Center Joint
Slip Ring
Cylinder
Suspension Cylinder (Optional)
Accumulator (Optional)
SERVICE MANUAL REVISION REQUEST FORM