Doosan Crawler Excavator Type DX420LC S/N: 5001 - 5326 Workshop Service Manual

Illustrated Factory Workshop Service Manual for Doosan Crawler Excavator Type DX420LC.

• Original factory manuals for Doosan Excavators, containing high-quality images, circuit diagrams, and instructions for operation, maintenance, and repair.
• All manuals are printable, contain searchable text, and navigation bookmarks.

Covered models: S/N: 5001 - 5326

Format: PDF, 900 Pages

Language: English

Contents:

• Safety
  • Track Excavator Safety
• Specifications
  • Specification for DX420LC
• General Maintenance
  • General Maintenance Procedures
  • Standard Torques
• Upper Structure
  • Cabin
  • Counterweight
  • Fuel Tank
  • Swing Bearing
  • Swing Reduction Gear
• Lower Structure and Chassis
  • Track Assembly
  • Air Conditioner
• Engine and Drive Train
  • Drive Coupling (Main Pump)
• Hydraulics
  • Hydraulic System Troubleshooting, Testing, and Adjustment
  • Accumulator
  • Center Joint (Swivel)
  • Cylinders
  • Swing Motor
  • Travel Motor (With Gearbox)
  • Main Pump
  • Control Valve (KVMG-400-DA)
  • Remote Control Valve (Work Lever / Joystick)
  • Travel Control Valve (With Damper)
  • Solenoid Valve Assembly
  • Breaker EPPR Valve (Opt)
  • Fan Motor (Vane Type)
  • Gear Pump (Fan Cooling Drive)
  • Fan Cooling Flow In-Out Change Valve
  • Hydraulic Schematic (DX420LC)
• Electrical System
  • Electrical System
  • Electrical Schematic (DX420LC)
• Attachments
  • Boom and Arm
  • Bucket