Part of the Doosan Repair Manuals.
Got a Doosan DX300LC or DX340LC in the shop? All 840 pages of this shop manual PDF (OEM #K1009684E) cover both excavators, from swing reduction gear to bucket pins. Inside: a full hydraulic troubleshooting, testing, and adjustment section, factory hydraulic schematics, and complete electrical schematics for both machines. You also get teardown and rebuild procedures for the main pump, swing motor, travel motor, cylinders, main control valve, and track assembly, backed by standard torque tables. Set track tension to 330-360 mm (13.0-14.17 in) on normal terrain, then torque the relief valve to 1700-1900 kg-cm (123-137 ft lb) with cracking pressure at 270 kg/cm³ (3,840 psi). Your excavator isn't earning anything parked. Bookmarked with a full text layer: type a spec, jump straight to the page, and get back in the seat.
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-52 | Safety Precautions, Applicable Models, To the Operator of a Doosan Daewoo Excavator, General Safety Essentials, Location of Safety Labels |
| Specifications | 53-80 | Specification for DX340LC |
| General Maintenance | 81-118 | General Maintenance Procedures, Standard Torques |
| Upper Structure | 119-216 | Swing Reduction Gear, Swing Bearing, Fuel Tank, Counterweight, Cabin |
| Lower Structure and Chassis | 217-288 | Air Conditioner SP000025, Track Assembly |
| Engine and Drive Train | 289-298 | Drive Coupling (Main Pump) |
| Hydraulic System Troubleshooting, Testing and Adjustment | 301-336 | Safety Precautions, Applicable Models, Hydraulic System - General Notes, Hydraulic Schematic, Operation of Working Components, Boom Operating Circuit |
| Accumulator | 337-388 | Safety Precautions, Applicable Models, General Description |
| Swing Motor | 389-424 | Safety Precautions, Applicable Models, General Description, Torques, Theory of Operation, Makeup Check Valve |
| Travel Motor SP000253 | 425-484 | Safety Precautions, Applicable Models, General Description, Theory of Operation, Special Tools and Materials, Hydraulic Motor Part |
| Main Pump | 485-534 | Safety Precautions, Applicable Models, A8VO200LA1KH1/63, General Repair Guidelines, Seal Kits and Sub-Assemblies, Sealing the Drive Shaft |
| Gear Pump | 535-614 | Safety Precautions, Applicable Models, Disassembling Single Gear Pump (Opt), Reassembling Single Gear Pump (Opt) |
| Remote Control Valve (Work Lever / Joystick) | 615-662 | Safety Precautions, Applicable Models, General Description, Theory of Operation, Torques, Tools and Materials |
| Breaker EPPR Valve (Opt) | 663-684 | Safety Precautions, Applicable Models, Structure, Numbers and Names of Parts, Functions and Operation, Cautions for Operation |
| Electrical System | 685-810 | Electrical System SP000038, Electrical Schematic (DX300LC/340LC) |
| Attachments | 811-840 | Boom and Arm, Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track tension distance for Normal terrain | 330 - 360 mm (13.0 - 14.17 in) | p. 225 |
| Track tension distance for Minimum clearance | 330 mm (13.0 in) | p. 225 |
| Relief Valve Torque | 1700 - 1900 kg•cm (123 - 137 ft lb) | p. 396 |
| Set Pressure of Relief V/V (Cracking) | 270 kg/cm2 (3,840 psi) | p. 396 |
| Motor Displacement | 250 cc/rev (15.26 in3/rev) | p. 396 |
| Motor Output Torque | 107.4 kg•m (777 ft lb) | p. 396 |
| Gear oil | 5.5 l/min. | p. 443 |
| Tightening torque for plug (564) | 220kgf•cm | p. 466 |
| Clearance (D-d) between piston and cylinder bore | 0.52 mm | p. 462 |
| Clearance between piston and shoe | 0.1 mm | p. 462 |
| Radial clearance of needle cage | 0.01 ~ 0.04 mm | p. 464 |
| Main relief valve plug (8) torque | below 2.0 kg•m (15 ft lb) | p. 591 |
