Part of the Doosan Repair Manuals.
This is the factory shop manual for the Doosan DX340LC-3 and DX350LC-3 crawler excavators, publication 950106-00225E, serial 1001 and up (10001 and up for Europe). Yes, both models - the cover says DX340LC-3/DX350LC-3, so if you run the 34-ton machine this same book covers you. Inside you get teardown and assembly for the upper structure, tracks and final drives, the full hydraulic circuit with test pressures (main relief 350 kg/cm2, 370 with Pressure Up), electrical schematics for the monitor panel, and maintenance intervals for a machine carrying 600 L of fuel and 450 L of hydraulic oil. This is the book Doosan dealer techs work from, not an operator pamphlet.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-72 | Safety Precautions, Decals, Lifting and Towing |
| Specifications | 73-102 | Machine and Engine Specifications, Working Ranges, Weights, Capacities, Relief Pressures |
| General Maintenance | 103-140 | Service Intervals, Fluids and Lubricants, Filters, Standard Torques |
| Upper Structure | 141-202 | Cab, Counterweight, Swing Bearing and Swing Motor, Tanks |
| Lower Structure and Chassis | 203-236 | Track Frame, Travel Motor, Idler, Rollers, Track Chain |
| Engine and Drivetrain | 237-264 | Engine Removal and Overhaul, Cooling, Fuel System, Air Intake |
| Hydraulic Troubleshooting, Testing and Adjustment | 267-300 | Symptom Charts, Pressure Tests, Main Relief 350 kg/cm2 and Pressure Up 370 kg/cm2 Settings |
| Accumulator, Center Joint and Cylinders | 301-364 | Accumulator, Center Joint (Swivel), Boom, Arm and Bucket Cylinders |
| Swing and Travel Devices | 365-478 | Swing Motor and Reduction Gear, Travel Motor and Final Drive Overhaul |
| Main Pump, Gear Pump and Fan Circuit | 479-606 | Main Pump Overhaul and Regulator, Gear Pump, Oil Cooler Fan Motor and Fan Pump |
| Control Valves and Solenoids | 607-806 | Main Control Valve, Prv, Sensor Block, Remote Control (Joystick) Valve, Travel Control Valve, Solenoid Valve Assembly, Breaker Eppr Valve |
| Hydraulic Schematic | 807-814 | Full Hydraulic Circuit Schematic Sheets |
| Electrical System | 815-984 | Wiring and Electrical Schematics, Sensors, Switches, Starting and Charging |
| Attachments | 985-1014 | Bucket, Breaker Piping and Optional Attachment Hydraulics |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rated Power | 285 ps @ 1,800 rpm (281 hp @ 1,800 rpm) | p. 93 |
| Max. Torque | 130 kg.m @ 1,300 rpm (940 ft lb @ 1,300 rpm) | p. 93 |
| Rated RPM (for power) | 1,800 rpm | p. 93 |
| Rated RPM (for max torque) | 1,300 rpm | p. 93 |
| Fuel Tank Capacity | 600 liters (158.5 U.S. gal) | p. 90 |
| Hydraulic System Capacity | 450 liters (118.8 U.S. gal) | p. 90 |
| Hydraulic Reservoir Capacity | 240 liters (63.4 U.S. gal) | p. 90 |
| Main Relief Pressure (normal operation) | 350 kg/cm² (4,978 psi) | p. 96 |
| Main Relief Pressure (with 'Pressure Up') | 370 kg/cm² (5,263 psi) | p. 96 |
| Shipping Weight | 34.9 tons (76,941 lb) | p. 90 |
| Shipping Weight (add for 700 mm (28") shoes) | 380 kg (838 lb) | p. 90 |
| Shipping Weight (add for 800 mm (32") shoes) | 760 kg (1,676 lb) | p. 90 |
| Shipping Weight (add for 850 mm (33.5") shoes) | 945 kg (2,083 lb) | p. 90 |
| Shipping Weight (add for 900 mm (36") shoes) | 1,140 kg (2,513 lb) | p. 90 |
| Shipping Weight (add for 600 mm (24") double grouser shoes) | 526 kg (1,160 lb) | p. 90 |
