Part of the Doosan Repair Manuals.
Need factory answers for your Doosan DX225LC? This 810-page shop manual PDF (OEM #950106-00075E, 2010) also covers the DX225NLC, DX300LC, DX300LCA, DX340LC, DX350LC, DX420LC, DX480LC, and DX520LC track excavators. Inside: full electrical schematics for the e-EPOS control system, complete hydraulic schematics, and page after page of troubleshooting for swing motors, travel motors, and axial piston pumps. You get teardown and reassembly steps for the swing bearing, track assembly, center joint, main control valve, and cylinders, plus a dedicated section on pilot pressure adjustment and flow meter testing. Torque 1/2-inch split flange bolts to 15-18 ft lb and set worm-drive hose clamps under 44 mm to 40-50 in lb. No more chasing a swing fault with a multimeter and a prayer. Bookmarked with a full text layer: search any spec, jump to any section, get wrenching.
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-50 | Track Excavator Safety (Safety Precautions, Applicable Models, To the Operator of a Doosan Excavator, Location of Safety Labels, Summary of Safety Precautions for Lifting in Digging Mode, Unauthorized Modifications, Before Starting Engine, Machine Operation, Maintenance, Battery, Towing, Shipping and Transportation, Lifting with Sling) |
| Specifications | 51-78 | Specification for DX300LCA |
| General Maintenance | 79-116 | Standard Torques |
| Upper Structure | 117-224 | Cabin, Counterweight, Fuel Tank, Fuel Transfer Pump, Swing Bearing, Swing Reduction Gear |
| Lower Structure and Chassis | 225-256 | Track Assembly |
| Engine and Drive Train | 257-268 | Drive Coupling |
| Hydraulic System Overview & General Troubleshooting | 269-304 | General Notes, Working Components Operation, Pilot Pressure Adjustment, Pump Input Power Control, Flow Meter Testing, Swing System Troubleshooting |
| Accumulator, Center Joint & Cylinders | 305-356 | Accumulator Description, Center Joint Disassembly, Cylinder Theory of Operation, Cylinder Reassembly, Parts Lists |
| Hydraulic Motors (Swing & Travel) | 357-438 | Swing Motor Description, Swing Motor Troubleshooting, Travel Motor Operation Basics, Travel Motor Disassembly, Travel Motor Reassembly |
| Hydraulic Pumps (Axial Piston & Gear) | 439-502 | Axial Piston Pump Theory, Axial Piston Pump Troubleshooting, Gear Pump Disassembly, Gear Pump Reassembly |
| Electrical System | 657-780 | Electrical Supply System, Engine Starting Circuit, Charging System, Monitoring System, Electronic Hydraulic Control System (e-EPOS), Air Conditioner System |
| Attachments | 781-810 | Boom and Arm, Bucket |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Standard Torques | SP000813 | p. 5 |
| Axial Piston Pump | SP000068 | p. 6 |
| TORQUE VALUES FOR SPLIT FLANGES - 1/2" Flange Size, 5/16" Bolt Size | 15-18 ft lb | p. 111 |
| TORQUE VALUES FOR HOSE CLAMPS - Hydraulic System, Worm Drive - Under 44 mm (1-3/4 in) Open Diameter | 40-50 in lb | p. 110 |
| Fuel filter replacement | Loosen plug (1, Figure 23) on top of fuel filter head. | p. 155 |
| Pilot Pressure and Tolerance | 30 bar +10 bar (435 psi +145 psi) | p. 450 |
| Shipping Weight | 29.2 metric tons | p. 66 |
| Fuel Tank Capacity | 500 liters | p. 66 |
| Hydraulic System Capacity | 280 liters | p. 66 |
| Engine Power Output | 200 ps @ 1,900 rpm | p. 69 |
| Main Relief Pressure (normal operation) | 330 kg/cm3 | p. 72 |
| Swing Motor Output Torque | 85.1 kg•m | p. 368 |
