Technical Manual Hitachi ZW310-6 Wheel Loader | TONFB50-EN-01

Technical Manual Hitachi ZW310-6 Wheel Loader TONFB50-EN-01 (Preview)

TONFB50-EN-01
CONTENTS
INTRODUCTION
SYMBOL AND ABBREVIATION
SECTION AND GROUP CONTENTS
SECTION 1
GENERAL
Group 1 Specifications
Specifications
Weight of Main Components
Group 2 Component Layout
Main Component
Main Component
Main Component
Electric Component Layout (Overview)
Electrical System (Cab)
Electrical System (Relays)
Electrical System (Around Hydraulic Oil Tank)
Electrical System (Around Fuel Tank)
Engine
Aftertreatment Device
Air Cleaner
Hydraulic Pump
Transmission and Torque Converter Assembly
Multiple Control Valve
Brake Charge Valve/Combination Valve
Flow Regulator Valve
Brake Valve
Ride Control Valve
Emergency (Secondary) Steering Group
Steering Valve
Emergecy Steering Pump
Joystick Steering Hydraulic Component Layout
Joystick Steering Cab Components
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
Transmission Control
Fan Control, Valve Control
Other Controls
JSS Control System
Combined Electric and Hydraulic Control Circuit
Group 3 Engine System
Outline
Engine Sensors
Fuel Injection Control
EGR Control
Preheating Control
Variable Turbocharger Control
Urea SCR System
Engine Output Restriction (Inducement)
Aftertreatment Device
Aftertreatment Device Regeneration Control
Group 4 Hydraulic System
Outline
Pilot Circuit
Brake Priority Circuit
Service Brake Circuit
Parking Brake Circuit
Lift Arm/Bucket Operation Control Circuit
Fan Circuit
Main Circuit
Steering Priority Circuit
Steering Operation Control Circuit
Neutral Circuit
Flow Rate Control Circuit
Relief Circuit
Other Circuits
Pump Control Circuit
Parallel Circuit Flow Rate Control
Single Operation Circuit
Combined Operation Circuit
Ride Control Circuit
Emergency (Secondary) Steering Circuit
Joystick Steering Hydraulic System
Group 5 Electrical System
Outline
Main Circuit
Electric Power Circuit (Key Switch: OFF)
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
Pilot Shut-Off Circuit (Key Switch: ON)
Auto Shut-Down (Idling Stop) Circuit
Engine Stop Circuit
Monitor Circuit
Air Conditioner Circuit
Steering Column Monitor Circuit
Head Light Circuit
Hazard Light Circuit (Key Switch: OFF)
Turn Signal Light Circuit
Horn Circuit (Key Switch: OFF)
Reverse Light/Buzzer Circuit
Brake Light Circuit
Parking Brake Circuit
Accessory Circuit
Work Light Circuit
Wiper Circuit
Cab Dome Light Circuit
JSS Electrical System
Outline
SECTION 3
COMPONENT OPERATION
Group 1 Pump Device
Hydraulic Pump Outline
Main Hydraulic Pump
Main Pump Regulator
Accessory Pump
Pump Delivery Pressure Sensor
Group 2 Control Valve
Outline
Hydraulic Circuit
Main Relief Valve
Main Relief Valve Operation
Overload Relief Valve (with Make-Up Function)
Overload Relief Valve Operation
Make-up Valve Operation
Bleed-Off Compensation Spool
Bleed-Off Compensator
Bucket Spool
Bucket Spool Operation
Lift Arm (Boom) Spool
Lift Arm Spool Operation
Lift Arm Spool Operation
Lift Arm Flow Rate Control Valve
Ride Control
Pump Control Valve (Negative Control Relief Valve)
Group 3 Cooling Fan System
Fan Pump (Accessory Pump)
Fan Motor
Fan Valve
Fan Control Valve
Fan Control Valve
Fan Control Valve
Group 4 Steering Pilot Valve
Outline
Unit Location
Overview
Structure
Operation
Group 5 Steering Valve
Outline
Operation
Steering Valve Meter-In Compensator
Steering Main Relief Valve
Steering Overload Relief Valve
Overload Relief Valve Operation
Steering Spool Variable Orifice
Steering Pilot Circuit and Its Operation
Flow Amplifier Notch and Pilot Orifice
Group 6 Pilot Valve
Outline (Fingertip Control Type Pilot Valve for Front Attachment)
Operation
Electromagnetic Detent
Outline (Joystick Type Pilot Valve for Front Attachment)
Operation
Electromagnetic Detent
Group 7 Charging Circuit
Outline
Brake Charge Valve
Combination Valve (Manifold Valve)
Reducing Valve (S/N 5001~5021)
Reducing Valve (S/N 5022~, 9001~)
Pressure Sensor Specifications (Loading Pilot Pressure)
Combination Valve (Parallel/Tandem Switching Solenoid Valve)
Service Brake Accumulator
Parking Brake Accumulator (S/N 5022~, 9001~)
Group 8 Drive Unit
Outline
Main Component
Torque Converter (Lock-Up)
Transmission
Operation of Transmission
Transmission Control Valve
Transmission Regulator Valve
Safety Valve
Torque Converter Safety Valve
Parking Brake
Drive Unit Circuit
Lubrication Lines
Group 9 Axle
Outline
Differential
Torque Proportioning Differential (TPD)
Limited Slip Differential (LSD)
Service Brake
Final Drive Planetary / Axle Shaft
Group 10 Brake Valve
Outline
Operation
Pressure Switch (for Stop Lamp)
Pressure Sensor (for Declutch)
Group 11 DEF Supply System
System Overview
DEF/AdBlue®
DEF Tank
Hose Urea
DEF Sensor Unit
DEF Supply Module
Coolant Line
Group 12 Others
Steering Accumulator
Propeller Shaft
Flow Regulator Valve
Ride Control Valve
Ride Control Accumulator
Priority Hammer Valve
Emergency (Secondary) Steering Pump
Axle Oil Cooler
SERVICE MANUAL REVISION REQUEST FORM