Technical Manual Hitachi ZX135US-5A Hydraulic Excavator | TODAY90-EN-00

Technical Manual Hitachi ZX135US-5A Hydraulic Excavator TODAY90-EN-00 (Preview)

TODAY90-EN-00
INTRODUCTION
SYMBOL AND ABBREVIATION
SECTION AND GROUPCONTENTS
SECTION 1GENERAL
Group 1 Specifications
Specifications
Working Ranges (Triple Grouser shoe)
Group 2 Component Layout
Main Component
Electrical System (Overview)
Electrical System (Rear Tray)
Electrical System (Switch Panel)
Electrical System (Around Air Cleaner)
Electrical System (Relays)
Engine
Pump Device
Around Pump Device
Control Valve
Signal Control Valve
Swing Device
Travel Device
4-Spool Solenoid Valve Unit
Maximum Pump 1 Flow Rate Limit ControlSolenoid Valve
Attachment Spec. Parts
Group 3 Component Specifications
Engine
Engine Accessories
Hydraulic Component
Electrical Component
Optional Parts
SECTION 2SYSTEM
Group 1 Controller
Outline
CAN Circuit
Group 2 Control System
Outline
Engine Control
Pump Control
Valve Control (Standard)
Valve Control (Option)
Other Control
Group 3 ECM System
ECM System
Fuel Injection Control
Fuel Injection Amount Correction Control
EGR Control
Preheating Control
Variable Turbocharger Control
Alarm Control
Group 4 Hydraulic System
Outline
Pilot Circuit
Main Circuit
Blade/Breaker/Pulverizer/Crusher Circuit(Optional)
Group 5 Electrical System
Outline
Main Circuits
Electric Power Circuit (Key Switch: OFF)
CAN Circuit
Accessory-Related Circuit (Key Switch: ACC)
Starting Circuit (Key Switch: START)
Charging Circuit (Key Switch: ON)
Surge Voltage Prevention Circuit
Pilot Shut-Off Circuit (Key Switch: ON)
Auto Shut-Down Circuit/Automatic EngineStop Circuit at Low Temperature
Engine Stop Circuit
Monitor Circuit
Security Circuit
Radio Circuit
Air Conditioner Circuit
Accessory Circuit
Work Light Circuit
Wiper/Washer Circuit
Cab Light Circuit
SECTION 3COMPONENT OPERATION
Group 1 Pump Device
Outline
Main Pump
Regulator
Solenoid Valve
Pilot Pump, Blade Pump (Option)
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
Flow Combiner Valve
Main Relief Valve
Overload Relief Valve (with Make-UpFunction)
Regenerative Valve
Anti-Drift Valve
Flow Rate Control Valve
Digging Regenerative Valve
Boom Lower Meter-In Cut Valve
Auxiliary Flow Combiner Valve and BypassShut-Out Valve
Blade Control Valve (Option)
Blade Circuit (Option)
Group 4 Pilot Valve
Outline
Operation (Front Attachment/Swing andTravel Pilot Valves)
Operation (Auxiliary, Blade Pilot Valves)
Shockless Function (Only for Travel PilotValve)
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
Bucket Flow Rate Control Valve ControlSpool, Flow Combiner Valve Control Spool,Swing Parking Brake Release Spool, Arm 1Flow Rate Control Valve Control Spool
Group 7 Others (Upperstructure)
Pilot Shut-Off Solenoid Valve
Solenoid Valve
Hose Rupture Valve (Option)
Pilot Relief Valve
Recirculation Valve
Group 8 Others (Undercarriage)
Swing Bearing
Centerjoint
Track Adjuster
SERVICE MANUAL REVISION REQUEST FORM