Description
Doosan Solar 70-3 Excavator Shop Manual (Serial Number 0001 and Up)
Doosan Solar 70-3 Excavator Index:
SAFETY
To the Operator of a Daewoo Excavator .
General Safety Essentials
Locations of Safety Labels .
Work-site Safety Precautions .
Operation ….. ….. ….. …
Equipment
Maintenance
Shipping and Transportation .
Excavator Lift Capacity Tables
SPECIFICATIONS
Component Locations
General Specifications .
Excavator Engine Specifications .
Engine Performance Curves
Hydraulic System Component Specifications
Hydraulic Pump Performance Characteristics
System Component Specifications .
General Dimensions .
Working Range Dimensions …………..
Reference Table — Approximate Weight of Workload Materials .
Excavator Lift Capacity Tables
Excavator Performance Tests and Standards
Excavator Performance Tests .
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
Engine Components
Hydraulic System Description ……
Hydraulic System Schematic
Hydraulic Circuits
Hydraulic System General Precautions ,
Maintenance Service and Repair Procedures
Welding Precautions and Guidelines
Accumulator
Hydraulic Cylinder Operation .
Hydraulic Attachment Cylinder Components
Hydraulic Attachment Cylinder Disassembly and Reassembly
Swing Bearing Maintenance
Swing Bearing Rebuild
Main pump Operation
Main Pump Disassembly
Main Pump Reassembly
Pilot Pump Disassembly and Reassembly
Swing Motor Operation
Control Valve Section Views
Control Valve Theory of Operation
Main Control Valve Disassembly
Main Control Valve Reassembly
Main Relief Valve
Overload Relief Valve
Relief Valve Adjustment
Remote Control Valve Parts List
Remote Control Valve Disassembly and Reassembly
Hydraulic System Schematic
LOWER STRUCTURE
General Description
Travel Motor Assembly and Parts List
Travel Motor Major Components and parts List
Axial Piston Motor Major Components and Parts List
Travel Motor Theory of Operation
Idler Assembly and Parts List
Lower Roller Assembly and Parts List
Upper Roller Assembly and Parts List
Track Spring and Adjusting Cylinder Assembly and Parts List
Track Tensioning
Service Standards for Lower Travel Frame Components
ELECTRICAL SYSTEM
24 Volt Operation
Engine Starting Circuit
Engine Start-up and Shutdown
Cylinder Preheat — Preheat Plug
Alternator Circuit
Low Current Electrical Circuits
Windshield Wiper Delay Circuitry
Wiring Color Code for Electrical Schematic Diagrams
Climate Control (Air Conditioning) Circuit
Instrument Panel
Function Check
ENGINE
Engine Specifications
Wear Limits of Major Engine Components
Fuel System ..
Engine Lubrication
Cylinder Head Bolt Torque Requirements
INSPECTION, MAINTENANCE AND ADJUSTMENT
Periodic Inspection and Maintenance
Table Of Recommended Lubricants
Maintenance Intervals
Inspection and Maintenance
Daily or Every 10 Operating Hours … …
Weekly or Every 50 Operating Hours
150 Operating Hours
Monthly or Every 950 Operating Hours
Three Months or Every 500 Operating Hours
Six Months or Every 1,000 Operating Hours .
Annually or Every 1 ,200 Operating Hours .
Horsepower Adjustment
Hydraulic Pump Maintenance . … ..
Torque Specifications
Torque Wrench Extension Tools
Flange and Thread Sealant Assembly Compounds
Welding Precautions and Guidelines
Hydraulic System Cleanliness and Oil Leaks
TROUBLESHOOTING
Engine
Electrical System
Hydraulic System
Hydraulic Pump
Hydraulic Cylinders
Swing System
Swing Motor….
Travel System
Travel Motor .
Counterbalance Valve
Relief Valve
2 Speed Transmission
Parking Brake
INDEX
