Hitachi Zaxis 70 70LC Technical Manual

$39.95

Factory Service Repair Manuals For Hitachi Zaxis 70 70LC Technical Manual Excavators. Tons of illustrations, instructions, diagrams for step by step remove and install, assembly and disassembly, service, inspection, repair, troubleshooting, tune-ups.

Photo 9 - Hitachi Zaxis 70 70LC Technical Manual
Hitachi Zaxis 70 70LC Technical Manual $39.95
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Factory Service Repair Manuals For Hitachi Zaxis 70 70LC Technical Manual Excavators. Tons of illustrations, instructions, diagrams for step by step remove and install, assembly and disassembly, service, inspection, repair, troubleshooting, tune-ups.

Format: PDF
Language: English
Pages: 1017
Bookmarks: Yes
Searchable: Yes
Number: W1CDE-00
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Hitachi Zaxis 70, 70LC

Contents

1.Technical Manual(Operational Principle)
2.Technical Manual(Troubleshooting)
3.Workshop Manual

Workshop Manual

  • INTRODUCTIUON
    SAFETY
  • -GENERAL INFORMATION
    –PRECAUTIONS FOR DISASSEMBLING AND ASSEMBLING
    Precautions for Disassembling and Assembling
    Maintenance Standard Terminology
    –TIGHTENING TORQUE
    Tightening Torque Specification
    Torque Chart
    Piping Joint
    Periodic Replacement of Parts
    –PAINTING
    Painting
  • -UPPERSTRUCTURE
    –CAB
    Remove and Install Cab
    Dimensions of the Cab Glass
    –COUNTERWEIGHT
    Remove and Install Counterweight
    –MAIN FRAME
    Remove and Install Main Frame
    –PUMP DEVICE
    Remove and Install Pump Device
    Disassemble Main Pumps 1 and 2
    Assemble Main Pumps 1 and 2
    Disassemble Main Pump 3
    Assemble Main Pump 3
    Maintenance Standards
    Disassemble and Assemble Pilot Pump
    –CONTROL VALVE
    Remove and Install Control Valve
    Disassemble Control Valve
    Assemble Control Valve
    –SWING DEVICE
    Remove and Install Swing Device
    Disassemble Swing Reduction Gear
    Assemble Swing Reduction Gear
    Disassemble Swing Motor
    Assemble Swing Motor
    Disassemble and Assemble Valve Block
    Maintenance Standard
    –PILOT VALVE
    Remove and Install Right Pilot Valve
    Remove and Install Left Pilot Valve
    Remove and Install Travel Pilot Valve
    Remove and Install Blade Pilot Valve
    Disassemble Right and Left Pilot Valves
    Assemble Right and Left Pilot Valves
    Disassemble Travel Pilot Valve
    Assemble Travel Pilot Valve
    Disassemble Blade Pilot Valve
    Assemble Blade Pilot Valve
    –PILOT SHUT-OFF VALVE
    Remove and Install Pilot Shut-Off Valve
    Disassemble Pilot Shut-Off Valve
    Assemble Pilot Shut-Off Valve
    –SHOCKLESS VALVE
    Remove and Install Shockless Valve
    Disassemble and Assemble
    Shockless Valve
    –SOLENOID VALVE
    Remove and Install Solenoid Valve Unit
    Disassemble Proportional Solenoid Valve
    Assemble Proportional Solenoid Valve
  • -UNDERCARRIAGE
    –SWING BEARING
    Remove and Install Swing Bearing
    Disassemble Swing Bearing
    Assemble Swing Bearing
    –TRAVEL DEVICE
    Remove and Install Travel Device
    Disassemble Travel Reduction Gear
    Assemble Travel Reduction Gear
    Disassemble Travel Motor
    Assemble Travel Motor
    Disassemble Brake Valve
    Assemble Brake Valve
    Maintenance Standard
    –CENTER JOINT
    Remove and Install Center Joint
    Disassemble Center Joint
    Assemble Center Joint
    Maintenance Standard
    –TRACK ADJUSTER
    Remove and Install Track Adjuster
    Disassemble Track Adjuster
    Assemble Track Adjuster
    –FRONT IDLER
    Remove and Install Front Idler
    Disassemble Front Idler
    Assemble Front Idler
    Maintenance Standard
    –UPPER AND LOWER ROLLER
    Remove and Install Upper Roller
    Remove and Install Lower Roller
    Disassemble and Assemble
    Lower Roller
    Maintenance Standard
    –TRACK
    Remove and Install Track
    Maintenance Standard
  • -FRONT ATTACHMENT
    –FRONT ATTACHMENT
    Remove and Install Front Attachment
    Maintenance Standard
    Standard Dimensions for Arm and Bucket Connection
    –CYLINDER
    Remove and Install Cylinder
    Disassemble Cylinder
    Assemble Cylinder
    Maintenance Standard
  • -ENGINE AND ACCESSORY
    –GENERAL INFORMATION
    General Repair Instructions
    Notes on the Format of This Manual
    Main Data and Specifications
    Tightening Torque Specifications
    –MAINTENANCE
    Model Identification
    Injiction Pump Identification
    Lubricating System
    Fuel System
    Cooling System
    Valve Clearance Adjustment
    Injection Timing
    Compression Pressure
    Measurement
    Recommended Lubricants
    Engine Repair Kit
    –ENGINE ASSEMBLY 1 (DISASSEMBLY)
    General Description
    Disassembly
    –ENGINE ASSEMBLY 2 (INSPECTION AND REPAIR)
    Inspection and Repair
    –ENGINE ASSEMBLY 3 (REASSEMBLY)
    Reassembly
    –LUBRICATING SYSTEM
    Main Data and Specification
    General Description
    Oil Pump
    –COOLING SYSTEM
    Main Data and Specification
    General Description
    Thermostat
    –FUEL SYSTEM
    Main Data and Specification
    General Description
    Injection Nozzle
    Injection Pump Calibration Data
    –ENGINE ELECTRICALS
    Starter
    Alternator
    –TROUBLESHOOTING
    Hard Starting
    Unstable Idling
    Insufficient Power
    Excessive Fuel Consumption
    Excessive Oil Consumption
    Overheating
    White Exhaust Smoke
    Dark Exhaust Smoke
    Oil Pressure does not Rise
    Abnormal Engine Noise
    –SPECIAL TOOL LIST
    Special Tool List
    –REPAIR STANDARDS
    General Rules
    Repair Standards Chart
    –CONVERSION TABLE
    Length
    Area
    Volume
    Mass
    Pressure
    Torque
    Temperature

Technical Manual (Operational Principle)

  • INTRODUCTION
  • -GENERAL
    –SPECIFICATION
    Specifications
    Working Ranges and Machine Transportation Dimensions
    –COMPONENT LAYOUT
    Main Components
    Electrical System (Overall System)
    Electrical System (Monitor and Switches)
    Others
    –COMPONENT SPECIFICATIONS
    Engine
    Engine Accessories
    Hydraulic Component
    Filter
    Electrical Component
  • -SYSTEM
    –CONTROL SYSTEM
    Outline
    Engine Control
    Valve ControlI
    Other ControlsI
    –HYDRAULIC SYSTEM
    Outline
    Pilot Circuit
    Main Circuit
    –ELECTRICAL SYSTEM
    Outline
    Main Circuit
    Electric Power Circuit (Key Switch: OFF)
    Indicator Light Check Circuit (Key Switch:ON)
    Accessory Circuit
    Preheat Circuit (Key Switch: He3t)
    Starting Circuit (Key Switch: Start)
    Charging Circuit (Key Switch: ON)I
    Serge Voltage Prevention CircuitI
    Engine Stop CircuitI
  • -COMPONENT OPERATION
    –PUMP DEVICE
    Outline
    Main Pumps (1,2 and 3)
    Reducing Valve
    Pilot Pump
    –SWING DEVICE
    Outline
    Swing Motor
    Swing Parking Brake
    Make-Up Valve
    Relief Valve
    Swing Reduction Gear
    –CONTROL VALVE
    Outline
    Hydraulic Circuit
    Flow Combiner Valve
    Main Relief Set Pressure Change
    Boom Anti-Drift Valve
    Main Relief Valve
    Overload Relief Valve
    –PILOT VALVE
    Outline
    Operation
    –TRAVEL DEVICE
    Outline
    Travel Motor
    Parking Brake
    Travel Brake Valve
    Travel Reduction Gear
    –OTHERS (UPPERSTRUCTURE)
    Pilot Shut-Off Valve
    Shockless Valve
    Solenoid Valve Unit
    EC Motor‘
    –OTHERS (UNDERCARRIAGE)
    Swing Bearing
    Center Joint
    Track Adjuster

Technical Manual(Troubleshooting)

  • INTRODUCTION
    SAFETY
  • -OPERATIONAL PERFORMANCE TEST
    –INTRODUCTION
    Operational Performance Tests
    Preparation for Performance Tests
    –ENGINE TEST
    Engine Speed
    Engine Compression Pressure
    Valve Clearance Adjustment
    Nozzle Check
    Injection Timing
    –EXCAVATOR TEST
    Travel Speed
    Track Revolution Speed
    Mistrack Check
    Travel Parking Function Check
    Swing Speed
    Swing Function Drift Check
    Swing Motor Leakage
    Swing Bearing Play
    Maximum Swingable Slant Angle
    Hydraulic Cylinder Cycle Time
    Dig Function Drift Check
    Control Lever Operating Force
    Control Lever Stroke
    Combined Boom Raise/Swing Function Check
    –COMPONENT TEST
    Primary Pilot Pressure
    Secondary Pilot Pressure
    Solenoid Valve Set Pressure
    Main Pump Delivery Pressure
    Main Relief Valve Set Pressure
    Overload Relief Valve Set Pressure
    Main Pump 1 and 2 Flow Rate Measurement
    Main Pump 3 Flow Rate Measurement
    Swing Motor Drainage
    Travel Motor Drainage
    –STANDARD
    Operational Performance Standard Table
    Main Pump 1 and 2 P-Q Diagram
    Main Pump 3 P-Q Diagram
    Injection Pump
    DrEX Monitor Indicating Values
  • -TROUBLESHOOTING
    –GENERAL
    Introduction
    Diagnosing Procedure
    Built-In Diagnosing System Operation
    Built-In Diagnosing Function Display List Dr EX Operation
    Dr EX Fault Code List
    Dr EX Monitoring Item List
    Dr EX Special Function
    Dr EX Service Mode
    Adjustment Data List
    –COMPONENT LAYOUT
    Main Components
    Electrical Component (Overall System)
    Electrical System (Monitors and Switches)
    Others
    Control Valve
    –TROUBLESHOOTING A
    Troubleshooting A Procedure
    Fault Code List
    Fault Code 01, 02, 03
    Fault Code 04
    Fault Code 06
    Fault Code 07
    Fault Code 18
    Sensor Activating Range
    –TROUBLESHOOTING B
    Troubleshooting B Procedure
    Relationship between Machine Trouble Symptoms and Related Parts
    Correlation between Trouble
    Symptoms and Part Failures
    Engine System Troubleshooting
    All Actuator System Troubleshooting
    Front Attachment System Troubleshooting
    Swing System Troubleshooting
    Travel System Troubleshooting
    Blade System Troubleshooting
    Other System Troubleshooting
    Engine Speed Adjustment and Engine Learning
    Exchange Inspection
    Emergency Boom Lowering Procedure
    –TROUBLESHOOTING C
    Troubleshooting C Procedure
    Malfunction of Coolant Temperature Gauge
    Malfunction of Fuel Gauge
    Malfunction of Indicator Light Check System
    Malfunction of Alternator Indicator
    Malfunction of Engine Oil Pressure Indicator
    Malfunction of Overheat Indicator
    Malfunction of Air Filter Restriction Indicator
    Malfunction of Buzzer
    Malfunction of LCD
    Malfunction of Hour Meter
    Malfunction of Hydraulic Oil Filter Indicator (Optional)
    –ELECTRICAL SYSTEM INSPECTION
    Precautions for Inspection and Maintenance
    Instructions for Disconnecting Connectors
    Fuse Inspection
    Fusible Link Inspection
    Battery Voltage Check
    How to Troubleshoot Alternator Malfunctions
    Continuity Check
    Voltage and Current Measurement
    Check by False Signal
    Test Harness
    –ICX
    Outline
    ICX Fault Code List
    Satellite Terminal Fault Code List
    Fault Code 1 to 6
    Fault Code 7 to 10
    Some Parts of Data in Daily Report, Frequency Distribution, Cumulative Operation Hours are not Recorded
    Troubleshooting and Setting of ICX and Satellite Terminal Using Dr EX
    Satellite Communication System

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