Part of the Doosan Repair Manuals.
Hunting for a Doosan DX300LC service manual PDF worth the download? This is the 854-page factory shop manual, OEM #K1006409AE, written for the DX300LC from serial number 7440 and up. Both schematics print as their own chapters on oversize sheets: the DX300LC hydraulic circuit at pages 689-695, with a 49-item component legend, and the electrical wiring schematic at pages 818-824. Ahead of them sit the chapters you actually work out of — hydraulic system troubleshooting, testing and adjustment, then teardown and reassembly of the swing motor, travel motor, axial piston pump, gear pump and main control valve, plus a standard torque chapter covering metric and U.S. fasteners, hose clamps and split flanges. The machine data is specific: 28.9 metric ton shipping weight, a DL08 engine rated 200 ps at 1,900 rpm, a 500 litre fuel tank and a 280 litre hydraulic system. Measure your track link pitch against the 216 mm factory standard, and replace the bushing once its outside diameter wears down to the 59 mm limit. The specification, hydraulic and electrical chapters are DX300LC-specific; several shared chapters — safety, cabin, cylinders, travel and solenoid valves, boom, arm and bucket — also list the DX340LC through DX520LC. Bookmarked with a full text layer: search any spec, jump to any system, and get wrenching.
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What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-50 | Safety Label Locations, General Hazard Information, Lifting in Digging Mode, Before Starting Engine, Machine Operation, Maintenance Safety |
| Specifications | 51-78 | Component Locations, General Dimensions, Working Range, General Specifications, Engine Performance Curves, Performance Tests, Excavator Performance Standards |
| General Maintenance and Standard Torques | 79-116 | Welding Precautions, Hydraulic System Cleanliness, Bearing Inspection, Torque Values for Metric and U.S. Fasteners, Hose Clamps, Split Flanges, Torque Wrench Extension Tools |
| Upper Structure | 117-224 | Cabin, Counterweight, Fuel Tank, Fuel Transfer Pump (Opt), Swing Bearing Axial and Lateral Play, Swing Reduction Gear |
| Lower Structure and Chassis | 225-256 | Track Tension, Track Shoe, Lower Roller, Upper Roller, Front Idler, Track Shoes and Links, Track Removal and Installation |
| Engine and Drive Train | 257-266 | Drive Coupling (Main Pump), Installation of Drive Coupling |
| Hydraulic System Troubleshooting, Testing and Adjustment | 267-302 | Operation of Working Components, Procedural Troubleshooting Baseline, Pilot Pressure, Power Mode Valve, Pressure Up Valve, Pump Regulator Adjustment, Flow Meter Testing, Swing System, Troubleshooting Tables for Hydraulic Problems and Control Valves |
| Hydraulic Components | 303-478 | Accumulator, Center Joint (Swivel), Cylinders and Slipper Seals, Swing Motor, Travel Motor, Travel Reduction Gear |
| Pumps | 479-542 | Axial Piston Pump Theory and Model Number Designation, Regulator, Torques, Single and Double Gear Pump Disassembly and Reassembly |
| Control Valves | 543-688 | Main Control Valve, Remote Control Valve (Work Lever / Joystick), Travel Control Valve (with Damper), Solenoid Valve Assembly, Breaker EPPR Valve (Opt) |
| Hydraulic Schematic (DX300LC) | 689-695 | Oversize Circuit Sheet on Page 695, 49-Item Legend: Main Pump, Main Control Valve, Boom, Arm and Bucket Cylinders, Swing Motor, Travel Motor, Restriction Valves, Oil Cooler, Rotating Valve, Optional Pedal Valve, Solenoid Valves |
| Electrical System | 696-817 | Electrical Supply System, Engine Starting Circuit, Preheating, Engine Stop, Charging System, Monitoring System, Warning and Indicator Lights, Special Menu, Failure Codes and FMI Numbers, Connectors |
| Electrical Schematic (DX300/340/350LC) | 818-824 | Oversize Wiring Sheet on Page 824 with Wire Gauge and Colour Codes: Battery and Battery Relay, Circuit Breaker, Air Heater, Alarm Buzzer and Relay, A/C Control Panel and Aircon Unit, Blower, CAN Bus Lines (AH, Al, Bh, Bl), Boost Pressure and Ambient Temp Sensors, Breaker and Shear Select Switch, Cabin Lamp, Beacon, Connectors |
| Attachments | 825-854 | Front Attachment Pin Specifications, Boom and Arm Removal and Installation, Bucket Tooth Inspection, Bucket Shimming, Bucket Attachment and Reversal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Shipping weight | 28.9 metric tons (63,714 lb) | p. 66 |
| Fuel tank capacity | 500 liters (132.1 U.S. gal) | p. 66 |
| Hydraulic system capacity | 280 liters (74 U.S. gal) | p. 66 |
| Hydraulic reservoir capacity | 160 liters (42 U.S. gal) | p. 66 |
| Ground pressure, standard 600 mm (23.6") shoe | 0.56 kg/cm2 (8.0 psi) | p. 66 |
| Engine model | DL08 | p. 69 |
| Engine power (DIN 6270) | 200 ps @ 1,900 rpm (197 hp) | p. 69 |
| Engine max. torque | 93 kg•m @ 1,300 rpm (673 ft lb) | p. 69 |
| Main relief pressure, normal operation | 330 kg/cm2 (4,689 psi) | p. 72 |
| Main relief pressure with "Pressure Up" | 350 kg/cm2 (4,970 psi) | p. 72 |
| Track link pitch, standard dimension | 216 mm (8.504") | p. 237 |
| Bushing outside diameter, standard / replace limit | 66.5 mm (2.618") / 59 mm (2.323") | p. 237 |
| Lower roller tread outside diameter, standard / repair limit | 178 mm (7.008") / 164 mm (6.457") | p. 238 |
| Return line and pilot circuit filter rating | 10 micron, full flow | p. 276 |
| Boom and arm overload relief valve setting | 360 kg/cm2 (5,112 psi) | p. 277 |
| Travel motor brake release pressure | 9 kg/cm2 (128 psi) | p. 408 |
| Travel reduction gear oil capacity | 7.0 liters (1.8 U.S. gal) | p. 476 |
| Main control valve, main relief valve tightening torque | 7.95 - 8.97 kg•m (58 - 65 ft lb) | p. 603 |
