Technical Manual Hitachi ZW310-5A Wheel Loader | TONFC-EN-00

Technical Manual Hitachi ZW310-5A Wheel Loader TONFC-EN-00 (Preview)

TONFC-EN-00
INTRODUCTION
To The Reader
Additional References
Manual Composition
Page Number
Safety Alert Symbol and Headline Notations
Units Used
Symbol and Abbreviation
Symbol and Abbreviation
SECTION AND GROUPCONTENTS
SECTION 1GENERAL
Group 1 Specifications
Specifications
Weight of Main Components
Group 2 Component Layout
Main Component (Overview)
Main Component (Travel System)
Electric Component Layout (Overview)
Electrical System (Cab)
Controller and Relays
Right Console
Monitor and Switches
Monitor Panel
Electrical System (Relays)
Engine/Fan Pump
Transmission and Torque Converter Assembly
Hydraulic Pump Device
Control Valve
Charging Block
Front Axle
Steering Valve
Brake Valve
Fan Motor
Pilot Valve
Ride Control Group (Option)
Emergency Steering Group (Option)
Emergency Steering Pump (Option)
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
SECTION 2SYSTEM
Group 1 Controller
Outline
CAN Circuit
Group 2 Control System
Outline
Engine Control
Accelerator Pedal Failure Control
Auto-Warm Up Control
Engine Load Idle Speed Control
Forward/Reverse Operation Engine Speed Limiter
Engine Speed Regulator for Digging
Speed Limit Control with Power Mode OFF
Machine Overheat Engine Speed Limiter
Reversing Fan Idle Speed Control
Pump Control
Base Torque Control
Torque Decrease Control While Dumping Bucket
Transmission Control
Neutral Control
Forward/Reverse Lever Priority Control (Option)
Manual Speed Shift Control
Automatic Speed Shift Control
Downshift Control
Speed Shift Delay Control
Clutch Cut Control
Shift Holding Control
Fan Control, Valve Control
Fan Speed Control
Fan Reverse Rotation Control (Option)
Ride Control (Option)
Other Controls
Transmission Alarm Control
Low Brake Oil Pressure Indicator Control
Low Steering Oil Pressure Indicator Control (Option)
Overrun Alarm Control
Lift Arm Auto Leveler Height Kickout Control(Option)
Lift Arm Auto Leveler Lower Kickout Control(Option)
Quick Power Mode Control
Emergency Steering Control (Option)
Combined Electric and Hydraulic ControlCircuit
Bucket Auto Leveler Control
Lift Arm Float Control
Lift Arm Lift Kickout Control
Group 3 ECM System
Outline
Fuel Injection Control
Operation of Fuel Injection
Fuel Flow Diagram
Group 4 Hydraulic System
Outline
Main Circuit
Outline
Priority Valve Circuit
Neutral Circuit
Single Operation Circuit
Combined Operation Circuit
Pilot Circuit
Outline
Charging Circuit (Brake Priority Circuit)
Lift Arm/Bucket Operation Control Circuit
Pump Control Circuit
Service Brake Circuit
Parking Brake Circuit
Ride Control Circuit (Option)
Steering Circuit
Steering Shock Dampening Function
Steering Stop Circuit
Emergency Steering Circuit (Option)
Fan Speed Control Circuit
Reversing Fan Circuit (Option)
Group 5 Electrical System
Outline
Main Circuit
CAN Circuit
Electric Power Circuit (Key Switch: OFF)
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
Accessory Circuit
Head Light Circuit
Clearance Light, License Light, Tail Light Circuit
Head Light Circuit
High-Beam Circuit
Hazard Light Circuit

Turn Signal Light Circuit
Horn Circuit (Key Switch: OFF)
Reverse Light/Buzzer Circuit
Brake Light Circuit
Parking Brake Circuit
Parking Brake: Applied
Parking Brake: Released
Work Light Circuit
Wiper Circuit
Front Wiper Circuit
Rear Wiper Circuit
Washer Circuit
Cab Dome Light Circuit
Cab Light Switch
Rear Cab Light Switch
SECTION 3COMPONENT OPERATION
Group 1 Pump Device
Pump Device Location
Main Pump Device Outline
Pump Device Hydraulic Circuit Diagram
Pump Specifications
Main Pump
Increasing and Decreasing Flow Rate
Regulator
Regulator Control Function
Control by Pump Control Pressure
Control by Pump Internal Delivery Pressure
Control by Pilot Pressure from Torque ControlSolenoid Valve
Steering Priority Valve
Steering Main Relief Valve
Pilot Pump
Pump Delivery Pressure Sensor
Group 2 Control Valve
Outline
Control Valve Location
Control Valve Hydraulic Circuit
Control Valve Overview
Control Valve Cross Section Views
Hydraulic Circuit
Main Circuit
Pilot Operation Control Circuit
Main Relief Valve
Overload Relief Valve (with Make-UpFunction)
Relief Operation
Make-Up Operation
Restriction Valve
Pump Control Valve (Negative Control ReliefValve)
Flow Rate Control Valve
Group 3 Cooling Fan System
Cooling Fan System
Unit Location
Fan Pump
Pump Specifications
Fan Motor
Fan Motor Specifications
Fan Motor (Option)
Fan Motor Specifications
Fan Valve (Option)
Fan Valve Operation
Normal Rotation
Reverse Rotation
Fan Speed Control
Fan Valve Make-Up Function
Pressure Sensor (Fan Circuit Pressure)
Pressure Sensor Specifications
Group 4 Steering Pilot Valve
Outline
Unit Location
Overview
Structure
Operation
Steering (Left)
Steering (Right)
Neutral
Group 5 Steering Valve
Outline
Unit Location
Steering Valve Overview
Steering Valve Component Layout
Operation
Steering (Left)
Steering Overload Relief Valve
Relief Operation
Make-Up Operation
Steering Accumulator
Steering Accumulator Specifications
Group 6 Pilot Valve
Outline (Fingertip Control Type Pilot Valvefor Front Attachment)
Operation
Electromagnetic Detent
Pressure Sensor (Loading Pilot Pressure)
Outline (Auxiliary Pilot Valve) (Option)
Operation
Group 7 Charging Block
Outline
Unit Location
Charging Block Hydraulic Diagram
Charging Block Overview
Charging Block Cross Section View
Priority Valve
Priority Valve Operation
Pilot Relief Valve
Relief Valve Operation
Parking Brake Solenoid Valve
Solenoid Valve Operation
Pump Torque Control Solenoid Valve
Solenoid Valve Operation
Service Brake Accumulator
Accumulator Specifications
Pilot Accumulator
Accumulator Specifications
Service Brake Primary Pressure Sensor (BrakePressure Alarm)
Pressure Sensor Specifications
Parking Brake Pressure Sensor
Pressure Sensor Specifications
Group 8 Drive Unit
Drive Unit OutlineThe selectable range drive unit
Front View of Transmission
Cross Section View of Transmission
Rear View of Transmission
Side View of Transmission
Torque Converter
Torque Converter Operation
Transmission
Transmission Gear Pattern
Number of Gear Teeth
Clutch Pack
Speed Range Clutch Assy
Forward/Reverse Clutch Assy
Clutch Pack Operation
Power Flow in Transmission
Forward First Speed
Forward Second Speed
Forward Third Speed
Forward Fourth Speed
Reverse First Speed
Transmission Control Valve
Transmission Control Valve Overview
Transmission Control Valve Operation (Modulation)
Manual Operation Spool (for Emergency Travel)
Clutch Solenoid Valve
Solenoid Valve Operation
Hydraulic Circuit
Transmission Regulator Valve
Transmission Regulator Valve Operation
Parking Brake
Parking Brake Operation
Parking Brake Manual Release
Group 9 Axle
Outline
Differential
Purpose of Differential
Principle of Differential
Operation of Differential
Torque Proportioning Differential (TPD)
Limited Slip Differential (LSD) (Option)
Service Brake
Final Drive Planetary / Axle Shaft
Group 10 Brake Valve
Outline
Brake Valve Component Layout
Operation
Pressure Switch (for Stop Lamp)
Pressure Switch Specifications
Pressure Sensor (Service Brake SecondaryPressure for Clutch Cut)
Pressure Sensor Specifications
Group 11 Ride Control Device
Ride Control Valve (Option)
Outline
Overview
Ride Control Hydraulic Circuit Diagram
Ride Control Valve Layout
Ride Control Operation
Charge-Cut Spool
Overload Relief Valve
Relief Operation
Make-Up Operation
Drain Plug
Ride Control Accumulator (Option)
Ride Control Accumulator Specifications
Lift Arm Raise Pressure Sensor (Option)
Lift Arm Angle Sensor (Option)
Group 12 Others
Propeller Shaft
2nd Propeller Shaft (Between Front Axle and Transmission)
3rd Propeller Shaft (Between Transmission and Rear Axle)
Stop Valve
Stop Valve Operation
Emergency Steering Pump (Option)
Emergency Steering Check Block (Option)
Axle Oil Cooler (Option)
Axle Oil Cooler Hydraulic System
Axle Oil Cooler Hydraulic Circuit Diagram
Fan Pump for Axle Oil Cooler
Axle Oil Cooler Major Components
Oil Cooler Fan
Oil Filter Assembly
Oil Pump Assembly
Axle Oil Cooler Electrical System
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