Part of the Doosan Repair Manuals.
Looking for the Doosan DX300LC-3 shop manual PDF straight from the factory? All 888 pages of this Shop Manual (OEM #950106-00215E) cover the DX300LC-3 excavator from swing bearing to track assembly. Inside: full hydraulic schematics, electrical wiring diagrams for the starting, charging, and monitoring circuits, and a complete troubleshooting section for pilot pressure, power mode valve, and pump input power control. You also get step-by-step disassembly and reassembly procedures for the main pump, swing device, travel motor, and boom and arm cylinders. Set main relief at 350 kg/cm2 (370 in pressure-up mode) and fill the hydraulic system to 280 liters total. No more chasing hydraulic faults on a 30-ton machine with borrowed numbers. Bookmarked and keyword-searchable; download it, pull it up on your tablet next to the machine, and get to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-72 | Track Excavator Maintenance Safety |
| Specifications | 73-102 | Specifications for DX300LC-3 |
| General Maintenance | 103-140 | Standard Torques |
| Upper Structure | 141-202 | Cabin, Counterweight, Fuel Tank, Fuel Transfer Pump, Swing Bearing |
| Lower Structure and Chassis | 203-236 | Track Assembly |
| Engine and Drivetrain | 237-266 | Diesel Heater, Drive Coupling |
| Hydraulic System Troubleshooting, Testing and Adjustment | 267-302 | Troubleshooting, Pilot Pressure, Power Mode Valve, Pressure Up Valve, Pump Input Power Control |
| Accumulator | 303-310 | Gas-Charged Storage, Precharge Pressure, Specifications, Maintenance |
| Center Joint (Swivel) | 311-324 | Swivel Joint, Inspection, Disassembly, Reassembly, Leakage Prevention |
| Cylinders | 325-364 | Boom Cylinder, Arm Cylinder, Piston Nut, Slipper Seal, Disassembly, Reassembly |
| Swing Device | 365-416 | Swing Motor, Reduction Gear, Reactionless Valve, Brake Part, Disassembly, Reassembly |
| Travel Device | 417-476 | Travel Motor, Reduction Gear, Brake Valve, High-Low Speed Switching, Disassembly, Reassembly |
| Main Pump | 477-522 | Axial Piston Pump, Regulator, Flow Control, Horsepower Control, Disassembly, Reassembly |
| Gear Pump (Option) / Main Control Valve / Breaker EPPR Valve (Option) / Hydraulic Schematic | 523-694 | Gear Pump, Main Control Valve, Breaker EPPR Valve, Hydraulic Schematic, Troubleshooting |
| Electrical System | 695-860 | Electrical Supply System, Engine Starting Circuit, Engine Preheating System, Charging System, Monitoring System, Air Conditioner System |
| Attachments | 861-888 | Boom and Arm, Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Relief Pressure (Normal) | 350 kg/cm² | p. 96 |
| Main Relief Pressure (Pressure Up) | 370 kg/cm² | p. 96 |
| Fuel Tank Capacity | 500 liters | p. 90 |
| Hydraulic System Capacity | 280 liters | p. 90 |
| Hydraulic Reservoir Capacity | 165 liters | p. 90 |
| Engine Power | 216 ps | p. 93 |
| Max Torque | 99 kg•m | p. 93 |
| Fuel Consumption (Rated) | 160 g/ps•h | p. 93 |
| Counterweight Weight | 5,300 kg | p. 90 |
