Part of the Doosan Repair Manuals.
Looking for the Doosan DX225LC shop manual PDF? This is the 798-page factory shop manual (OEM #K1015439E) for the DX225LC track excavator, serial number 5001 and Up. It opens with a full specification section: 21.5 metric ton shipping weight, DL06 engine rated 150 ps at 1,900 rpm, 400 liter fuel tank and 140 liter hydraulic reservoir. The electrical section carries per-system circuit diagrams, electric power, power mode, work mode, power boost, lighting, air conditioner and heater, overload warning and audio, plus EPOS panel diagnostics and failure-log procedures. The hydraulic section adds function-by-function circuit diagrams alongside troubleshooting, testing and adjustment, with pilot pressure set to 40 ± 5 bar at the gear pump and main relief running 330 kg/cm2 normal, 350 kg/cm2 with Pressure Up. You also get teardown and reassembly steps for the cylinders, swing motor, swing reduction gear, travel motor, main control valve and axle piston pump, each with wear limits and tolerances. Fill the swing reduction gear with 3.8 liters of EP80W/90, then torque the eleven gearbox-to-frame bolts to 55 kg-m. Bookmarked with a real text layer, so you can search any spec and pull it up on your phone in the cab.
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-48 | Applicable Models and Serial Number Ranges, General Safety Essentials, Location of Safety Labels, Safety Precautions for Lifting in Digging Mode |
| Specifications | 49-74 | Component Locations, General Dimensions and Working Range, General Specifications, DL06 Engine Performance Curves (DIN 6270), Performance Tests and Excavator Performance Standards |
| General Maintenance | 75-110 | Welding Precautions, Hydraulic System Cleanliness and Oil Leaks, Bearing Inspection and Wear Patterns, Standard Torque Values for Metric and U.S. Fasteners, Hose Clamp Torques |
| Upper Structure | 111-216 | Cabin, Counterweight, Fuel Tank and Fuel Transfer Pump, Swing Bearing, Swing Reduction Gear: Removal, Installation, Wear Limits and Gear Oil Service |
| Lower Structure and Chassis | 217-250 | Track Assembly: Track Tension, Track Shoes and Links, Front Idler, Lower and Upper Rollers, Cleaning and Inspection with Wear Limits |
| Engine and Drive Train | 251-262 | Drive Coupling (Main Pump): General Description, Special Tools, Removal and Installation |
| Hydraulic System Troubleshooting and Testing | 263-320 | Hydraulic System General Notes, Operation of Working Components, Procedural Troubleshooting Baselines, Pilot Pressure and Power Mode Valve, Circuit Diagrams for Each Working Function, Accumulator, Center Joint (Swivel) |
| Cylinders, Swing and Travel Motors | 321-450 | Cylinder Disassembly and Reassembly with Special Tools, Swing Motor Operation and Maintenance, Travel Motor Operation, Hydraulic Circuit Diagram, Gear Oil Service and Wear Limits |
| Pumps, Control Valves and Hydraulic Schematic | 451-642 | Gear Pump, Main Control Valve Testing, Adjustment and Rebuild, Axle Piston Pump, PTO Server, Remote Control Valve (Joystick), Travel Control Valve with Damper, Solenoid Valve Assembly, Breaker EPPR Valve, Hydraulic Schematic Section |
| Electrical System | 643-774 | Electric Power, Engine Starting, Preheating, Stop and Charging Circuits, Power Mode, Work Mode and Power Boost Circuit Diagrams, Lighting, Air Conditioner and Heater, Overload Warning and Audio Circuit Diagrams, EPOS Panel Diagnostics and Failure Logs |
| Attachments | 775-798 | Boom and Arm: Front Attachment Pin Specifications, Removal and Installation; Bucket: Tooth Inspection and Replacement, O-Ring Replacement, Bucket Reversal |
Every system also includes applicable models and safety precautions.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Model | DL06 | p. 64 |
| Engine Power (DIN 6270) | 150 ps @ 1,900 rpm (148 hp) | p. 64 |
| Max. Engine Torque | 68 kg•m @ 1,400 rpm (492 lb•ft) | p. 64 |
| Shipping Weight | 21.5 metric tons (47,399 lb) | p. 61 |
| Counterweight Weight | 4,100 kg (9,039 lb) | p. 61 |
| Fuel Tank Capacity | 400 liters (105.7 U.S. gal) | p. 61 |
| Hydraulic System Capacity | 240 liters (63.4 U.S. gal) | p. 61 |
| Hydraulic Reservoir Capacity | 140 liters (37 U.S. gal) | p. 61 |
| Main Relief Pressure (Normal) | 330 kg/cm2 (4,689 psi) | p. 67 |
| Main Relief Pressure (Pressure Up) | 350 kg/cm2 (4,970 psi) | p. 67 |
| Pilot Pressure at Gear Pump | 40 ± 5 bar (580 ± 73 psi) | p. 279 |
| Pilot Pressure at Joystick | 23.5 ± 1.5 bar (341 ± 22 psi) | p. 279 |
| Pilot Accumulator Charge Pressure | 10 kg/cm2 (140 psi) | p. 307 |
| Swing Reduction Gear Oil | 3.8 L EP80W/90 | p. 212 |
| Swing Gearbox to Frame Bolt Torque | 55 kg•m (398 ft lb) | p. 215 |
| Travel Reduction Gear Oil Change Quantity | 3.3 liters SAE #90 | p. 407 |
| Main Relief Valve Plug Torque | 7.95 - 8.97 kg•m (58 - 65 ft lb) | p. 527 |
| Solenoid Valve Coil Resistance | 26.7 Ω @ 20°C | p. 623 |
