Description
Doosan Daewoo Solar 400LC-3 Excavator Shop Manual (Serial Number 0080 and Up)
Doosan Daewoo Solar 400LC-3 Excavator Index:
SAFETY
To the Operator of a Daewoo Excavator
Basic Excavator Operating Safety
General Safety Essentials
Locations Of Safety Labels
Safety Precautions for Lifting in Leveling Mode I
Operation
Equipment .
Maintenance
Shipping and Transportation
Excavator Rated Lift Capacity Tables
SPECIFICATIONS
Excavator Machinery Plan
Excavator Engine Specifications
Engine Performance Curves (Per KS-R1004 Standard)
Hydraulic System Component Specifications
Hydraulic Pump Performance Characteristics ………….
Specifications
General Dimensions
Working Range Dimensions .
Reference Table — Approximate Weight of Workload Materials
Excavator Rated Lift Capacity Tables
UPPER STRUCTURE
Operator’s Cab Removal Procedure
Falling Object Protective Structures (F.O.P.S.)
Front Attachment Pin Specifications
Bucket Tooth Inspection and Replacement .
Shimming Bucket Linkage
Bucket Attachment, Removal and Reversal
Removal and Installation of the Front Attachment .
Attachment Cylinders, Disassembly and Reassembly
Cylinder Disassembly Special Tools
Operation of Hydraulic Cylinders
Cylinder Assembly and Disassembly
Cylinder Reassembly
Welding Precautions and Guidelines
Accumulator
Engine Components and Accessories
Counterweight Removal and Installation
Fuel Tank Removal and Installation
Engine Cooling System: Radiator/Oil Cooler
Swing Bearing Maintenance .
Center Joint (Swivel) OverhauVRepair
Hydraulic System General Notes
Operation of Working Components
Main Pump Assembly Description
pump Regulator Description
Hydraulic System General Precautions
Maintenance Service and Repair Procedure
Troubleshooting — Main Pump
Main Pump Parts List
Main pump Disassembly and Reassembly
Reassembly of Main Pumps and Valve Block
Pump Regulator Parts List … … …
Pump Regulator Disassembly and Reassembly
Swing Motor Basic Operation
Rebuilding the Swing Motor — Disassembly
Swing Motor Parts List
Rebuilding the Swing Motor — Assembly
Swing Gearbox — Disassembly .
Swing Gearbox — Assembly
Control Valve Assembly
Pump Flow Control Regulator
Electronic Proportional Control Valve
LOWER STRUCTURE
General Description .
Travel Motor — Theory of Operation
Travel Motor Brake
Counterbalance Valve
Relief Valve
Travel Motor Specifications
Travel Motor .
Principles of Torque Generation
Two Speed Travel
Motor Rotation .
Motor Lubrication
Hydraulic Oil — Visual Inspection
Filter
Motor Installation and Inspection
Troubleshooting — Travel Motor .
Troubleshooting — Travel Brake
Troubleshooting — Relief Valve
Troubleshooting — Dual Counterbalance Valve
Troubleshooting — Two Speed Shift Valve
Travel Motor Repair Standards
Rebuilding the Travel Motor — Disassembly (MAG-230-VP6000-3)
Travel Motor Assembly Torques
Rebuilding the Travel Motor — Assembly
Travel Gearbox- (Model RGCQ30 VP-61)
Rebuilding the Travel Gearbox — Disassembly
Travel Gearbox Parts List
Rebuilding the Travel Gearbox — Assembly
Front Idler Roller Parts List
Lower Roller Parts List … .
Upper Roller Parts List .
Track Spring and Track Adjusting Cylinder Parts List
Track Tensioning
Service Standards for Lower Travel Frame Components .
ELECTRICAL SYSTEM
General Description
24 Volt Operation
Engine Start-up and Shutdown
Cylinder Preheat — Intake Air Electrical Heater .. , , , , .
Alternator Circuit
LOW Current Electrical Circuits
Climate Control (Air Conditioning) Circuit …………..
Power Mode System Operating Components .
Instrument Panel
Instrument Panel LED Displays and Input Terminal Connections
Instrument Panel Connector Arrangement
Instrument Panel Selector Switches
Instrument Panel Coolant Overheating Circuit
Instrument Panel Indicator Lights
Instrument Panel Engine Oil Pressure Circuit .
start-up Electrical Test Circuit
Interior Lighting
Hydraulic Pump Discharge Pressure Sensor .
Power Mode Circuit Instrument Panel Summary
Power Mode System Basic Operation
Power Mode Ill
Power Mode II
Power Mode I
Swing Priority Circuit
Boom Up, Arm Crowd, and Bucket Crowd Combined Operation .
Loading Work Mode .
Swing and Arm Dump Combined Operation
Swing Priority and Arm Crowd Recovery Function
Leveling Mode l: Boom Up and Arm Crowd Combined Operation .
Leveling Mode II
Maintaining Straight Travel While Swinging
Maintaining Straight Travel While Operating the Boom Arm, or Bucket Cylinders
ENGINE
Engine Specifications (D2366T)
Wear Limits Of Major Engine Components
Engine Oil Pump Overhaul and Rebuilding
Fuel Injection Pump Installation, Alignment and Timing
Cylinder Headbolt Torque Requirements
Engine Throttle Controller
Engine Speed Sensor
INSPECTION, MAINTENANCE AND ADJUSTMENT
Periodic Inspection and Maintenance ….
Table of Recommended Lubricants
Maintenance Intervals
Inspection and Maintenance
Daily or Every IO Operating Hours .
Weekly or Every 50 Operating Hours .
150 Operating Hours .
Monthly or Every 250 Operating Hours
Three Months or Every 500 Operating Hours
Six Months or Every 1,000 Operating Hours
