Technical Manual Hitachi ZW140-5B, ZW140PL-5B Wheel Loader | TONDF-EN-01 (2015.04.27)

Hitachi ZW140-5B, ZW140PL-5B Wheel Loader TONDF-EN-01 (2015.04.27) (Preview)

TONDF-EN-00
INTRODUCTION
SYMBOL AND ABBREVIATION
SECTION AND GROUP CONTENTS
SECTION 1 GENERAL
Group 1 Specifications
Specifications
Group 2 Component Layout
Main Component Layout (Overview)
Main Component Layout (Upperstructure)
Main Component Layout (Travel System)
Electrical System (Overview)
Electrical System (Cab)
Engine
Muffler Filter
HST Pump, 4-Gear Pump Unit
Transmission, HST Motor
Control Valve
Manifold Valve
Brake Charge Valve
Fan Valve
Fan Valve (with Fan Reverse Rotation)(Optional)
Ride Control Valve (Optional)
Emergency Steering Block (Optional)
Emergency Steering Pump (Optional)
Solenoid Valve (In Front Frame)
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
HST Pump/Motor Control, Transmission Control
Fan Control, Valve Control
Control by Electric and Hydraulic Combined Circuit
Group 3 ECM System
Outline
Fuel Injection Control
Fuel Injection Amount Correction Control
EGR Control
Preheating Control
Alarm Control
Muffler Filter
Operation
Muffler Filter Regenerative Control
Variable Turbocharger Control
Group 4 Hydraulic System
Outline
Main Circuit
Steering Circuit
Emergency Steering Circuit (Optional)
Pilot Circuit
Ride Control Circuit (Optional)
HST Circuit
Transmission Circuit
Fan Circuit
Group 5 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
Light Bulb Check Circuit (Key Switch: ON)
CAN Circuit
Accessory Circuit (Key Switch: ACC)
Starting Circuit (Key Switch: START)
Neutral Engine Start Circuit
Charging Circuit (Key Switch: ON)
Surge Voltage Prevention Circuit
Engine Stop Circuit
Auto Shut-Down Circuit (Optional)
Steering Column Monitor Circuit
Head Light Circuit
Hazard Light Circuit (Key Switch: OFF)
Turn Signal Light Circuit:
Horn Circuit (Key Switch: OFF)
Reverse Buzzer Circuit
Brake Light Circuit
Parking Brake Circuit
Accessory Circuit
Work Light Circuit
Wiper Circuit
Cab Light Circuit
SECTION 3 COMPONENT OPERATION
Group 1 Pump Device
Outline
Rotary Group
Displacement Angle Control Cylinder
Pump Displacement Angle Control Solenoid Valve
Forward/Reverse Control Solenoid Valve
Cutoff Valve
High-Pressure Relief Valve
Low-Pressure Relief Valve
HST Charging Pump
4-Gear Pump Unit
Group 2 HST Motor
Outline
Rotary Group
Regulator
Motor Displacement Angle Control Solenoid Valve
Motor Displacement Angle Control
Flushing Valve
Group 3 Control Valve
Outline
Hydraulic Circuit
Main Relief Valve
Overload Relief Valve
For Lift Arm Raise and Bucket Tilt Circuits
Make-Up Valve
Flow Rate Control Valve
Group 4 Fan Motor and Fan Valve
Fan Motor
Fan Valve
Fan Valve (with Fan Reverse Rotation) (OPT)
Group 5 Steering Valve
Outline
Structure
Operation
Overload Relief Valve
Make-Up Valve
Group 6 Priority Valve
Outline
Structure
Operation
Group 7 Pilot Valve
Outline (Joystick Type Pilot Valve for Front Attachment)
Operation
Electromagnetic Detent
Outline (Fingertip Control Type Pilot Valve for Front Attachment)
Operation
Electromagnetic Detent
Outline (Auxiliary Pilot Valve) (Optional)
Operation
Outline (Auxiliary Pilot Valve) (Optional)
Operation
Group 8 Brake Charge Valve
Outline
Brake Charge Valve
Group 9 Manifold Valve
Outline
Manifold Valve
Pilot Reducing Valve
Parking Brake Solenoid Valve
Control Lever Lock Solenoid Valve
Pilot Accumulator
Group 10 Transmission
Outline
Clutch Pressure Control Solenoid Valve
Parking Brake
Group 11 Axle
Outline
Differential
Torque Proportioning Differential (TPD)
Limited Slip Differential (LSD) (Optional)
Service Brake
Final Drive / Axle Shaft
Group 12 Brake Valve
Outline
Operation
Group 13 Ride Control Valve
Outline
Charge-Cut Spool
Overload Relief Valve
Drain Plug
Group 14 Others
Propeller Shaft
HST Cooler Bypass Check Valve
Service Brake Accumulator
Steering Accumulator
Ride Control Accumulator
Emergency Steering Check Block
Emergency Steering Pump
Solenoid Valve
Filter
SERVICE MANUAL REVISION REQUEST FORM