Linkbelt 800LX (Tier 3) Excavator Service Repair Manual

Service Repair Manual: 778 pages
Operators Manual: 232 pages
Parts Catalog: 509 pages
Hydraulic and Electrical Schematics
Manuals: Repair and Operators Manual
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