Part of the Doosan Repair Manuals.
This is the factory shop manual for the Doosan DX300LC-5 crawler excavator, the DC 9 powered machine rated at 202 kW (271 HP) at 1,800 rpm. Inside: safety and transport procedures, full specs and working ranges, standard fastener torque charts, and teardown coverage of the DC 9 engine including cooling, fuel, and the EGR/SCR aftertreatment. Upper structure chapters walk the main pump, main control valve, swing device, EPPR valve, and accumulator. Lower structure covers the swing bearing, center joint, travel device, and tracks; the front group gets boom, arm, bucket, and cylinders. Hydraulic testing and adjustment, electrical troubleshooting, and attachment options round it out, and the final Schematic chapter prints both the hydraulic and electrical wiring schematics in this same book.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-74 | Maintenance Safety, Instructions, Messages, General, Transportation, Operation, Environment |
| Specifications | 75-108 | Safety Instructions, General Descriptions, Component Locations, General Dimensions, Working Ranges, General Specifications, Approximate Weights of Workload Materials, Performance Tests, Preparation for Performance Tests, Operational Performance Standard Tables, Operational Performance Tests |
| General Maintenance | 109-146 | Maintenance Instructions, Standard Torques |
| Engine | 147-572 | Engine Coolant Heater |
| Upper Structure | 573-1024 | Cabin, Counterweight, Oil Tank, Fuel Tank, Main Pump, Drive Coupling, Main Control Valve, Swing Device, Fan Pump/Motor, Gear Pump, Joystick Valve, Travel Control Valve, Solenoid Valve, EPPR Valve, Accumulator |
| Lower Structure and Chassis | 1025-1150 | Swing Bearing, Center Joint, Travel Device, Track Assembly |
| Front | 1151-1212 | Boom and Arm, Bucket, Cylinders |
| Hydraulic System | 1213-1306 | Testing and Adjustment, Troubleshooting |
| Electrical System | 1307-1478 | Troubleshooting |
| Options | 1479-1570 | One Way, Two-Way, Rotating, Quick Coupler, Two Pump |
| Schematic | 1571-1576 | Hydraulic Schematic, Electrical Schematic |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Model | DC 9 | p. 169 |
| Rated Net Power | 202 kW (271 HP) @ 1,800 rpm (SAE J1995) | p. 169 |
| Max. Torque | 1,275 Nm @ 1,300 rpm | p. 171 |
| Fuel Tank Capacity | 500 L (132.1 U.S. gal) | p. 92 |
| Hydraulic Reservoir Capacity | 165 L (44 U.S. gal) | p. 92 |
| Hydraulic System Capacity | 280 L (74 U.S. gal) | p. 92 |
| Shipping Weight | 29.5 tons (65,036 lb), One-Piece Boom std config | p. 92 |
| Overall Shipping Length | 10,540 mm (34' 7") standard boom/arm | p. 93 |
| Ground Pressure Rating | 0.57 bar (8.1 psi), standard 600 mm shoe | p. 92 |
| Max. Digging Reach (3.1m STD Arm) | 10,860 mm (35' 7") | p. 91 |
| Max. Digging Depth (3.1m STD Arm) | 7,010 mm (22' 12") | p. 91 |
| Swing Speed | 18.5 sec / 3 revolutions | p. 98 |
