Linkbelt 800LX (Tier 3) Excavator Service Repair Manual

Table of Contents

1. Specifications

• Major Equipment Specifications
  • Complete Machine Dimensions
    • Standard Arm (3.66 m)
    • Long Arm (4.44 m)
    • Super Long Arm (5.62 m)
    • Mass Digging Arm (2.98 m)
  • Work Range
    • Standard Arm (3.66 m)
    • Long Arm (4.44 m)
    • Super Long Arm (5.62 m)
    • Mass Digging Arm (2.98 m)
  • Optional Components
    • List of Optional Components
• Emission Control Regulation of 3rd-Stage
  • Execution Time Emission Control Regulation
  • Standard Amount of Exhaust Gas
  • Measures to be Taken for the Emission Control Regulation
  • Engine Fuel and Maintenance of Fuel Filters
  • Engine System Diagram
  • Construction of Engine (ISUZU 6WGIT)
  • Common Rail Injection System
  • Suction and Exhaust System
• Major Equipment
  • Equipment
    • Overall
    • Operator’s Cab
  • Lower Mechanism
    • Assembly Drawing
    • Travel Unit
    • Idler Wheel
    • Upper Roller
    • Lower Roller
    • Recoil Spring
    • Shoes
  • Upper Mechanism
    • Swing Unit
  • Engine and Related Areas
    • Engine
    • Muffler
    • Air Cleaner (With Pre-Cleaner)
    • Radiator
    • Fuel Tank
  • Hydraulic System
    • Hydraulic Pump
    • Hydraulic Reservoir
    • Rotating Joint
    • Solenoid Valve
  • Controls
    • Control Valve
    • Remote Control Valve (Left/Right, Travel Operations)
  • Backhoe Attachments
    • Cylinder
    • Attachments

2. Hydraulic Section

• Hydraulic Pump
  • Operation Principle
  • Internal Structure Drawing
• Control Valve
  • Operation Explanation of Each Part
  • Main Relief Valve
  • Overload Relief Valve
  • Foot Relief Valve
  • Load Holding Valve
  • Arm Regenerative
  • Priority Valve
  • Boom Regenerative
• Swing Unit
  • Operation Principle
  • Hydraulic Motor
  • Anti-Cavitation Check Valve Section
  • Relief Valve
  • Reversal Prevention Valve
  • Brake Section
  • Internal Structure Drawing
• Travel Unit
  • Operation Principle
  • Hydraulic Motor
  • Parking Brake
  • 2-Speed Switch Mechanism Operation Principle
  • Relief Valve
  • Double Counterbalance Valve
• Fan Motor for Hydraulic Drive
  • Outside Drawing
  • Internal Structure Drawing
  • Operation Principle
  • Hydraulic Motor
  • Suction Safety Valve
  • Variable Flow Control Valve
  • Operation of Forward/Reverse Changeover Valve

3. Hydraulic Circuits Section

• Port Locations
  • Hydraulic Pump
  • Control Valve
• Pilot Hose Connection Diagrams
  • Pilot P&T Lines
  • Pilot Control Lines
• Functional Explanation
  • Functional Table
• Travel Circuits
  • High Speed Travel Circuit
  • Low Speed Travel Circuit
  • Straight Travel Circuit
• Swing Circuits
  • Swing Parking Circuit (Lever in Neutral/Swing Locked)
  • Swing Parking Circuit (Brake Released)
  • Swing Push Digging
• Arm Circuits
  • Arm-Out Circuit
  • Arm-In Load Holding
  • Arm-In Circuit
• Boom Circuits
  • Boom-Up Circuit (Single)
  • Boom-Up Circuit (Combined)
  • Boom-Down Load Holding
  • Boom-Down Circuit
• Backup Circuits
  • Combined Circuit (Breaker Circuit)
  • Combined Circuit (High Speed Confluence Circuit)
• Other Circuits
  • High Dump
• Hydraulic Circuit Diagram

4. Electric Circuits Section

• Operation Explanation
  • System Chart of Functions
  • Engine Control
  • Work Mode Selection
    • H.S.L Modes
    • Auto Modes
    • Load Prefetch Control
  • Throttle Control
  • Idling Control (Auto/One-Touch)
  • Breaker Mode
  • Auto Preheat (Glow Control)
  • Auto Warm-Up
  • Overheat Protection
  • Atmospheric Pressure Compensation
  • Control When Starting Engine
  • Control When Stopping Engine
  • Emergency Stop of the Engine
  • Engine Protection Function (EPF)
  • Lever Lock
  • Auto Boost Control
  • Swing Lock
  • Swing Brake Control
  • Travel Speed Switch-Over
  • Travel Alarm
  • Power Shut-Off Delay
  • Control of Hydraulic Driven Fan
  • Fuel Supply Pump Control (Automatic Stop, Optional)
  • Power Transistor Protection
  • Monitor Display
    • Normal Display
    • Message Display
• Service Support
  • Summary
  • Operating Instructions
• Measuring Electrical Device
  • Instruments to be Measured
  • Equipment for Measuring
  • Measuring Methods
• Initial Controller Settings
  • Verifying the Settings
  • Resetting Procedures
  • Setting Procedures
  • List of Settings
  • Error Display Functions
• Troubleshooting
  • Problem Symptoms
  • Inspections Prior to Troubleshooting
  • Troubleshooting Procedures
  • Using the Flow Chart
  • Diagnosis
    • Refilling Fuel
    • Refilling Coolant
    • Low Engine Oil Pressure
    • Overheat
    • Battery Charging
    • Faulty Electrical System
• Electric Wiring Diagrams
  • Electrical Components and Wiring (Frame)
  • Electrical Components and Wiring (Cab)
• Harness Diagrams
  • Frame Main Harness
  • Cab Main Harness
• Electric Circuits Diagram

5. Maintenance Section

• New Machine Performance
  • Performance Evaluation Check Sheet
  • Reference Values
• Instructions for Measuring and Adjusting Pressure
  • Measuring Pressure
    • Basic Conditions
    • Set Values
    • Pressure Measuring Port
    • Preparation for Measuring Pressure
    • Measuring Pressure
    • Measuring Other Pressures
  • Adjusting Pressure
    • Pressure Adjusting Points
    • Instructions for Adjusting Pressure
• Maintenance of the Circumference of Engine
  • Circumference Filter Arrangement of Engine
  • Fuel Element System Diagram
• Main Body Weight
  • Major Component Weight
  • Individual Part Weight
  • Shoe Weight
  • Arm Weight
• Attachments Dimensions
• Compatibility
• Plastic Shim
• Procedures for Changing Operation Type
  • ISO Type
  • Old Sumitomo Type
  • Old Mitsubishi Type
  • Old Kobelco Type

6. Assembly and Disassembly Section

• Summary of Assembling
  • Total Work Process
  • Major Machines, Tools, and Equipment Table
  • Matters to be Attended
  • Prior Preparation
  • Prior Preparation Procedure
  • Unloading Work
  • Connection of Lower Sideframes to Upper Swing Body
  • Mounting Travel Motor Lines
  • Mounting Counterweight
  • Mounting Attachments
  • Checking Work
  • Confirmation of Movement After Assembling Work
• Summary of Disassembling
• Attached Data

7. Appendix

• Unit Conversion Table
• New Hydraulic Oil