Need factory numbers for your Doosan Solar 225LC-V track excavator? All 666 pages of this Doosan Solar 225LC-V shop manual PDF (OEM #023-00058E) cover the Solar 225LC-V and 225NLC-V, from swing bearing to bucket pins. You get full hydraulic schematics with pilot pressure and power mode valve testing, complete electrical schematics for the e-EPOS controller and monitoring system, plus step-by-step teardowns of the main pump, Kayaba control valve, swing motor, and travel motor. Wear limits are here too: replace track link bushings at 54.0 mm, and swap the return filter once clogging pressure climbs 1.5 kg/cm². The hydraulic system takes 240 liters; the fuel tank, 350. Chasing an e-EPOS fault without the schematic is a lost afternoon. Bookmarked and keyword-searchable; pull it up on your phone next to the machine and get wrenching.
What's Inside This Doosan Solar 225LC-V Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-44 | Track Excavator Safety, General Safety Essentials, Lifting in Digging Mode, Hazard Information, Maintenance Safety |
| Specifications | 47-68 | Solar 225LC-V Specs, General Dimensions, Working Range, Engine Performance, Performance Tests |
| General Maintenance | 71-84 | Maintenance Procedures, Standard Torques, Bearing Inspection, Welding Precautions |
| Cab | 99-106 | Cab Shell Removal and Installation, Wiper and Washer Connectors, Control Console Harnesses and Hydraulic Piping Through the Floor, Operator's Seat and Duct Covers, Main Harness Disconnection |
| Counterweight | 107-114 | Counterweight Removal and Installation, Counterweight Weight Table 3, 900-4, 500 Kg (8, 580-9, 920 Lb), Rated Slings and Shackles, Assist Crane Capacity, Front Attachment Safety Interlock |
| Fuel Tank | 115-126 | General Description, Removal, Installation, Start-Up Procedures |
| Fuel Transfer Pump | 127-132 | Theory of Operation, Troubleshooting, Rotor and Vane Replacement, Armature Replacement |
| Swing Bearing | 133-138 | Swing Bearing Maintenance, Operating Recommendation, Measuring Swing Bearing Axial Play, Measuring Bearing Lateral Play, Swing Bearing Basic Operation, Rebuilding Swing Bearing |
| Swing Reduction Gearbox | 139-162 | Two-Step Planetary Gearbox, Sun Gears No.1 and No.2, Carriers No.1 and No.2, Ring and Pinion Gears, Roller Bearings and Oil Seal, Swing Brake Engagement Check, Drain Valve and Oil Level |
| Track Assembly | 165-190 | Track Tension, Track Shoes and Links, Front Idler Roller, Lower Roller, Upper Roller |
| Air-Conditioner | 193-218 | Control Panel, Refrigerant Circulation, Troubleshooting, Refrigerant Charging, Leakage Check |
| Drive Coupling (Main Pump) | 219-232 | Drive Coupling Installation, Special Tools, Torque Specifications, Alignment |
| Hydraulic System Troubleshooting | 235-268 | Hydraulic Schematic, Pilot Pressure, Power Mode Valve, Swing Priority Valve, Pressure Up Valve |
| Cylinders | 287-326 | Theory of Operation, Disassembly, Assembly, Piston Jig, Slipper Seal Jig |
| Swing Motor | 327-356 | Theory of Operation, Swing Brake Operation, Disassembly, Reassembly, Wear Limits |
| Travel Motor (with Gearbox) | 357-410 | Theory of Operation, Brake Valve, Disassembly, Reassembly, Reduction Gear Cover |
| Main Pump (with Regulator) | 411-450 | Pump Regulator Description, Horsepower Control, Disassembly, Reassembly, Performance Characteristics |
| Main Control Valve (Kayaba) | 451-508 | Neutral Passage, Signal Passage, Antidrift Valve, Main Relief Valve, Overload Relief Valve |
| Pilot Control Valve (Work Lever / Joystick) | 509-528 | Four Push Rods, Spools and Return Springs, Pressure Reduction Valve Operation, Six-Port Housing (Input P, Tank T, Four Secondary Ports), Balancing Spring and Secondary Discharge Pressure, Horn Switch in the Handle |
| Travel Control Valve (with Damper) | 529-552 | Pressure Reducing Valve, Damper Mechanism, Disassembly, Reassembly, Installation |
| Electrical System | 563-638 | Electric Supply System, Engine Starting Circuit, Monitoring System, e-EPOS Controller, Lighting System |
| Boom and Arm | 649-656 | Front Attachment Pin Specs, Arm Removal, Boom Removal, Installation Procedures |
| Bucket | 657-666 | Bucket Tooth Inspection and Replacement, Type 1, Type 2, Bucket O-Ring Replacement, Bucket Shimming Procedures, New Bucket Installation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Return filter pressure increase for clogging | 1.5 kg/cm² | p. 583 |
| Track link, master pin bushing, master bushing (A) replacement limit | 54.0 mm | p. 170 |
| Track link, master pin bushing, master bushing (B) replacement limit | 41.0 mm | p. 170 |
| Fuel Tank Capacity | 350 liters | p. 56 |
| Hydraulic System Capacity | 240 liters | p. 56 |
| Hydraulic Reservoir Capacity | 140 liters | p. 56 |
| Counterweight Weight | 3,900 kg | p. 109 |
| Swing Reduction Gearbox Oil Capacity | 6 liters | p. 161 |
| Travel Reduction Gearbox Oil Capacity | 5.40 liters | p. 409 |
| Main Relief Pressure (Normal) | 330 kg/cm2 | p. 63 |
| Main Relief Pressure (Pressure Up) | 350 kg/cm2 | p. 63 |
| Pilot Pump Relief Valve Pressure | 40 kg/cm2 | p. 414 |
Doosan Solar 225LC-V Common Problems This Manual Covers
Doosan Solar 225LC-V engine stalls when boom is held against relief at full RPM
Test main relief pressure first; spec is 330 kg/cm2 normal and 350 kg/cm2 in pressure up mode, listed on page 63. If pressure checks out, suspect the pump regulator horsepower control dragging the engine down; regulator procedures start on page 411. Verify pilot pressure holds 40 kg/cm2 before condemning the pump.
Manual Section: Main Pump (with Regulator) p. 411Hydraulic functions slow and weak, oil temperature climbs after an hour of digging
Check reservoir oil level first; the reservoir holds 140 liters and the full system takes 240 liters, per page 56. Replace the return filter if its indicator shows a pressure rise over 1.5 kg/cm2, the clogging spec on page 583. Clean the oil cooler fins, then work the troubleshooting charts starting on page 235.
Manual Section: Hydraulic System Troubleshooting p. 235Tracks keep loosening and need tension adjustment every few days despite normal working conditions
Measure the master pin bushings before adjusting tension again. Replace links when bushing dimension A wears to the 54.0 mm limit on page 170; worn bushings will not hold adjustment no matter how often you tighten. Inspect the front idler and lower rollers while the track is off, using the procedures starting on page 165.
Manual Section: Track Assembly p. 165Swing gearbox growling and running hot, gear oil weeping from the case
Drain the gearbox and inspect the oil for metal particles. Refill with 6 liters of gear oil, the capacity listed on page 161. If growling continues on fresh oil, pull the gearbox for bearing and gear inspection; disassembly and reassembly procedures run through the section starting on page 139.
Manual Section: Swing Reduction Gearbox p. 139Machine pulls to one side during travel, one track noticeably slower than the other
Check travel reduction gearbox oil on the slow side first; each gearbox holds 5.40 liters, per page 409. Drain a sample and look for metal. If oil is clean, swap the travel lines side to side to isolate motor from valve; motor service starts on page 357, the travel control valve on page 529.
Manual Section: Travel Motor (with Gearbox) p. 357Frequently Asked Questions
What are the error code meanings for the Doosan Solar 225LC-V?
The Doosan Solar 225LC-V uses specific codes to indicate system malfunctions. For example, code 82 indicates a communication error between the e-EPOS controller and the instrument panel, while codes 01, 02, and 03 indicate short circuits in the EPPR valve, Pressure Up solenoid valve, and Swing Priority solenoid valve, respectively. p. 63
How do I reset error codes on the Doosan Solar 225LC-V?
For communication errors (code 82), the system performs an automatic reset once the problem is corrected. For other codes like 01, 02, or 03, you must correct the problem and then turn the start switch from 'OFF' to 'ON' to reset the system. p. 63
What is the replacement specification for the fuel filter?
The fuel tank capacity is 350 liters (93 U.S. gal). The fuel filter is a component of the fuel tank system, and the system should be primed using the hand-operated primer pump if the engine does not start after maintenance. p. 119
What is the tightening torque for the main relief valve on the Solar 225LC-V?
The tightening torque for the main relief valve (plug 1, width across flats: 32 mm) is 7.95 - 8.97 kg·m (58 - 65 ft lb). p. 103
What is the required oil capacity for the swing reduction gearbox?
The swing reduction gearbox requires 6 liters (6.3 quarts) of gear oil. p. 161
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