Part of the Doosan Repair Manuals.
Wrenching on a Doosan DX480LC or DX520LC track excavator? All 866 pages of this shop manual PDF (OEM #K1008703BE) are built to put your machine back to factory spec, swing bearing to travel motor. You get full hydraulic schematics plus a dedicated troubleshooting, testing, and adjustment section covering the main pump, swing motor, travel motor, and main control valve. Inside: complete electrical schematics for both models, teardown procedures for cylinders, track assembly, center joint, and swing reduction gear, and a standard torque reference. Torque the final drive's drilled head bolts to 2,700 kg-cm (195 ft lb), and keep the return line filter at 10 micron. No more bleeding a hydraulic circuit on a guess. Bookmarked with a real text layer: search any spec, pull it up on your phone in the cab, and get back to digging.
Other editions of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Dx480Lc/520Lc | 1-4 | |
| Safety | 7-50 | Track Excavator Safety |
| Specifications | 51-84 | Specification for DX480/520LC |
| General Maintenance | 85-122 | General Maintenance Procedures, Standard Torques |
| Upper Structure | 123-238 | Cabin, Counterweight, Fuel Tank, Fuel Transfer Pump (Opt), Swing Bearing, Swing Reduction Gear |
| Lower Structure and Chassis | 239-278 | Track Assembly |
| Engine and Drive Train | 279-288 | Drive Coupling (Main Pump) |
| Hydraulic System Troubleshooting, Testing and Adjustment | 291-324 | Safety Precautions, Applicable Models, Hydraulic System - General Notes, Hydraulic Schematic, Operation of Working Components, Boom Operating Circuit |
| Accumulator | 325-396 | Safety Precautions, Applicable Models, General Description |
| Travel Motor (with Gearbox) | 397-460 | Safety Precautions, Applicable Models, General Description, Theory of Operation, Hydraulic Motor Operation, Reduction Gearbox Operation |
| Main Pump | 461-518 | Safety Precautions, Applicable Models, A8VO200LA1KH1/63, General Repair Guidelines, Seal Kits and Sub-Assemblies, Sealing the Drive Shaft |
| Gear Pump (Fan Cooling Drive) | 519-594 | Safety Precautions, Applicable Models, Disassembling Single Gear Pump, Reassembling Single Gear Pump, Disassembling Double Gear Pump(Opt), Reassembling Double Gear Pump(Opt) |
| Remote Control Valve (Work Lever / Joystick) | 595-642 | Safety Precautions, Applicable Models, General Description, Function, Torques, Tools and Materials |
| Fan Motor (Vane Type) | 643-688 | Safety Precautions, Applicable Models, Introduction and Description, General, Description, Applications |
| Breaker EPPR Valve (Opt) | 689-707 | Safety Precautions, Applicable Models, Structure, Numbers and Names of Parts, Functions and Operation, Cautions for Operation |
| Electrical System | 708-836 | Electrical Schematic DX480LC/520LC |
| Attachments | 837-866 | Boom and Arm, Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Swing Reduction Gearbox Weight | 170 kg (375 lb) | p. 201 |
| bearing temperature | 90° - 100°C (194° - 212°F) | p. 212 |
| Torque for drilled head bolts on end of shaft | 2,700 kg•cm (195 ft lb) | p. 220 |
| Hydraulic reservoir return line and pilot circuit filter rating | 10 micron | p. 299 |
| Reservoir intake strainer rating | 80 mesh, 177 micron | p. 299 |
| Boom overload relief valve pressure setting | 360 kg/cm2 (5,112 psi) | p. 300 |
| Arm overload relief valve pressure setting | 360 kg/cm2 (5,112 psi) | p. 301 |
| Internal sealing PF3/4 engagement torque | 15±1.09 kg m | p. 343 |
| External sealing PT3/8 engagement torque | 4.5 ~ 9.5 kg m | p. 343 |
| Tightening Torque for M5 shaft bolts (Strength Class 12.9) | 10 Nm | p. 421 |
| DX480LC | ||
| Fuel Tank Capacity | 620 liters | p. 70 |
| DX520LC | ||
| Fuel Tank Capacity | 620 liters | p. 72 |
