Part of the Doosan Repair Manuals.
All 792 pages of this Doosan DX210, DX225LCB shop manual PDF (OEM #950106-00185E) exist for one reason: putting your track excavator back to work. Inside: complete hydraulic schematics with troubleshooting, testing, and adjustment procedures for pilot pressure, the power mode valve, and the main control valve. You also get full electrical schematics covering the starting, charging, monitoring, and electronic hydraulic control circuits, plus step-by-step teardowns of the swing motor, travel motor, cylinders, and center joint. Real numbers, straight from Doosan: counterweight bolts torque to 150 kg·m (1,085 ft lb), and a healthy travel motor passes the jack-up test in 17.4 to 20.4 seconds at high speed. One side tracking slow? Quit swapping parts on a hunch. Download once, search any spec by keyword, and jump bookmark to bookmark right at the machine.
What's Inside This Doosan DX210, DX225LCB Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-52 | Safety Precautions, Checks Before Starting Engine, Battery and Asbestos Dust Hazard Prevention, Attachment Precautions, Action When Abnormality Is Found |
| Specifications | 53-80 | Machine Dimensions, Operating Weight, Engine Data, Hydraulic Capacities for DX210 and DX225LCB |
| General Maintenance | 81-118 | Standard Torques, Bolt Torque and Bolt Head Identification, Bearing Inspection, Wear and Cage Damage, Thread Locking Adhesives |
| Upper Structure | 119-224 | Cabin, Counterweight, Fuel Tank, Fuel Transfer Pump, Swing Bearing, Swing Reduction Gear |
| Lower Structure and Chassis | 225-260 | Track Assembly, Adjusting Cylinder, Bushing and Link, Bearings and Backup Rings, Chassis Inspection Items |
| Engine and Drive Train | 261-274 | Drive Coupling (Main Pump), Coupling Parts and Fixing Nut, Flywheel, Installation Procedure and Clearance Measurement |
| Hydraulic System Troubleshooting, Testing and Adjustment | 275-310 | System Overview, Pilot Pressure, Power Mode Valve, Swing System Troubleshooting, Control Valve Troubleshooting |
| Accumulator | 311-320 | Theory of Operation, Precharge Pressure, Maintenance, Specifications |
| Center Joint (Swivel) | 321-334 | Rotor Shaft, Body and Cover, O-Rings and Spacers, Slip Ring Seals, Port Identification |
| Cylinders | 335-366 | Theory of Operation, Piston Nut, Piston Jig, Disassembly, Reassembly, Slipper Seal |
| Swing Motor | 367-402 | Theory, Brake Valve, Parking Brake, Disassembly, Reassembly, Maintenance Standards |
| Travel Motor | 403-462 | Theory, Brake Valve, Parking Brake, Disassembly, Reassembly, Testing |
| Gear Pump | 463-474 | Single Gear Pump, Drive and Driven Gears, Shaft and Bushings, Housing and Cover, Shaft Seal |
| Main Control Valve | 475-657 | Theory, Spool Shift, Relief Valve, Antidrift Valve, Disassembly, Reassembly |
| Electrical System | 658-766 | Electrical Supply System, Engine Starting Circuit, Charging System, Monitoring System, Electronic Hydraulic Control System, Air Conditioner System |
| Attachments | 767-792 | Boom and Arm Removal and Installation Procedures, Attaching and Detaching the Bucket, Wear Part Replacement |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Travel Motor Jack-up Test (High Speed - Standard Mode) | 17.4 - 20.4 sec | p. 80 |
| Travel Motor Jack-up Test (High Speed - Power Mode) | 16.5 - 19.5 sec | p. 80 |
| Bolt Torque | 150 kg•m (1,085 ft lb) | p. 144 |
| Fuel tank capacity | 400 liters (105 U.S. gal) | p. 151 |
| Coolant overheat warning threshold | 107°C (225°F) | p. 723 |
| Normal operation coolant temperature | below 95°C (203°F) | p. 723 |
| Hydraulic System Capacity | 240 liters | p. 67 |
| Hydraulic Reservoir Capacity | 140 liters | p. 67 |
| Main Relief Pressure | 330 kg/cm2 | p. 74 |
| Engine Power | 157 ps @ 1,950 rpm | p. 71 |
| Max Torque | 60 kg•m @ 1,400 rpm | p. 71 |
| Swing Reduction Gear Oil Capacity | 3.8 liters | p. 220 |
Doosan DX210, DX225LCB Common Problems This Manual Covers
Doosan DX210 hydraulic pump whining and slow bucket lift, gets worse as oil warms up
Check the hydraulic reservoir level first; the reservoir holds 140 liters and low oil pulls air into the suction line, which makes a pump whine. Bleed the system, then test main relief pressure against the 330 kg/cm2 spec on page 74. Pressure that will not reach spec with adjustment points to pump wear, not the relief valve.
Manual Section: Hydraulic System Troubleshooting, Testing and Adjustment p. 275Machine pulls to one side when traveling, one track turns noticeably slower than the other
Jack up the slow side and time the travel motor jack-up test; high speed standard mode should run 17.4 to 20.4 seconds per page 80. If it runs slow, drain the travel motor gear oil, refill with 3.3 liters, and check the travel control valve for a sticking spool before condemning the motor.
Manual Section: Travel Motor p. 403Swing reduction gear growls and rotation feels jerky when starting or stopping a swing
Drain the swing reduction gear and measure what comes out; capacity is 3.8 liters per page 220, and a short drain means it has been running starved. Look for metal glitter in the oil before refilling. Grease the swing bearing and rotate the house between shots so grease spreads around the full race.
Manual Section: Swing Reduction Gear TroubleshootingCoolant temperature climbs under load and power falls off in hot weather
Verify the reading first: the overheat warning triggers at 107°C (225°F) and normal operation stays below 95°C (203°F), page 723. Blow out the radiator and oil cooler cores from the fan side, check fan blades for cracks and even shroud clearance, then inspect the air cleaner filter for restriction.
Manual Section: Electrical System p. 723Engine cranks slowly or clicks once and won't fire after sitting overnight
Clean both battery terminals down to bright metal and tighten the clamps; a loose ground kills cranking speed before anything else does. Trace the engine starting circuit on the wiring diagram, page 658, wiggle-testing each connector for corrosion. If cranking is strong, drain the water separator and confirm fuel; the tank holds 400 liters.
Manual Section: Electrical System p. 658Frequently Asked Questions
How do I enter self-diagnostics on a Doosan DX225LCB?
To start self-diagnostics, turn the starter switch to the ON position. Then, press the SEL switch more than 3 times in 5 seconds while pressing the A/C switch. The auto-diagnosis will start after the graphic in the LCD displays twice every 0.5 seconds. p. 750
What is the procedure for resetting the operation hours on a Doosan DX225LCB?
To reset operation hours, navigate to the 'Reset Hrs' screen in the special menu. Press the Enter button (3 on Figure 24) to select it. When the 'All Operating Hours will be DELETED' screen appears, press the 'YES' button to confirm the reset. p. 708
What is the fuel tank capacity for the DX210 and DX225LCB?
The fuel tank capacity for both the DX210 and the DX225LCB is 400 liters (105.7 U.S. gal). p. 67
What is the tightening torque for the main relief valve on the DX210/DX225LCB?
The tightening torque for the main relief valve is 7.95 - 8.97 kg•m (58 - 65 ft lb). p. 535
What is the recommended interval for changing the gear oil in the swing reduction gear?
The first gear oil change should be performed after 500 operating hours. Subsequent oil changes should be performed every 1000 operating hours or once per year. p. 420
Is this Doosan DX210 Shop Manual a digital download?
Straight to your device: 792 pages of searchable Shop Manual, downloadable the moment payment goes through.
Is this Doosan DX210 manual print-friendly?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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