This 668-page Daewoo Solar 255LC-V shop manual PDF (OEM #023-00057E) is the same factory book dealer techs use on the track excavator, and it applies to the Solar 130LC-V, 170LC-V, 220LC-V, 220N-V, and 225LC-V as well. Inside: complete hydraulic schematics and electrical wiring diagrams, plus a full troubleshooting, testing and adjustment section covering the whole hydraulic circuit: main pump with regulator, Kayaba main control valve, swing motor, travel motor, and cylinders. You also get rebuild procedures for the swing bearing, swing reduction gearbox, track assembly, boom, arm, and bucket, backed by a standard torque chart. Fill the fuel tank to 370 liters and swap track bushings once wear passes the 54.0 mm limit. No more forum guesses while your excavator sits idle. Bookmarked and keyword-searchable; pull it up on your phone right at the machine.
What's Inside This Daewoo Solar 255LC-V Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-46 | Track Excavator Safety |
| Specifications | 47-70 | General Description, Component Locations, General Dimensions, Working Range, General Specifications, Engine Performance Curves (per DIN 6270 Standard) |
| General Maintenance | 71-98 | Welding Precautions and Guidelines, Hydraulic System - General Precautions, Maintenance Service and Repair Procedure, General Precautions, Hydraulic System Cleanliness and Oil Leaks, Maintenance Precautions for Hydraulic System Service |
| Upper Structure | 99-160 | Cab S0402040K, Counterweight S0403050K, Fuel Tank S0405025K, Fuel Transfer Pump, Swing Bearing, Swing Reduction Gearbox S0408005K |
| Lower Structure and Chassis | 161-188 | Track Assembly |
| Engine and Drive Train | 189-230 | Air-Conditioner S0605060K, Drive Coupling (Main Pump) |
| Hydraulic System Troubleshooting, Testing and Adjustment S0702170K | 233-268 | Hydraulic System - General Notes, Hydraulic Schematic, Operation of Working Components, Boom Operating Circuit, Boom Up Circuit, Boom Down Circuit |
| Accumulator S0703010K | 269-324 | General Description |
| Swing Motor | 325-352 | General Description, Theory of Operation, Swing Motor Anti-Cavitation Make-Up Valve, Relief Valve, Swing Brake Operation, Parts List (Model Solar 225LC-V, 225NLC-V) |
| Travel Motor (with Gearbox) | 353-410 | General Description, Gearbox (Reduction Unit), Theory of Operation, Travel Motor, Motor, Special Tools and Materials |
| Main Pump (with Regulator) | 411-450 | General Description, Gear (Pilot) Pump, Relief Valve, Pump Regulator Description, Horsepower Control, Power Shift Control |
| Main Control Valve (Kayaba) S0709401K | 451-508 | General Description, When All Spools Are in Neutral, Neutral Passage, Signal Passage, Single Operation, Travel Spool Shifting |
| Pilot Control Valve (Work Lever / Joystick) S0709451K | 509-552 | Travel Control Valve (with Damper) S0709820K |
| Hydraulic Schematic (Solar 255LC-V) S0792115K | 553-558 | General Description, Solar 255LC-V |
| Electrical System | 559-642 | Troubleshooting - Electrical System, Overview, Electric Supply System, Engine Starting Circuit, Operation During Start Process, Operation After Start Process |
| Attachments | 643-666 | Boom and Arm, Bucket |
| Publication Request for Proposed Revision | 667-668 | Company Name, Street Address, City, State, Province, Country, Name, Machine Model |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel tank capacity | 370 liters (98 U.S. gal) | p. 121 |
| Bolt torque for fuel filter head plug | 27 kg•m | p. 126 |
| Track link, master pin bushing, master bushing A (Normal) | 59.0 mm (2.32 in) | p. 168 |
| Track link, master pin bushing, master bushing A (Recommended Limit) | 57.0 mm (2.24 in) | p. 168 |
| Lower roller, axle A (Normal) | 70 mm (2.756 in) | p. 168 |
| Lower roller, axle A (Recommended Limit) | 68.60 mm (2.70 in) | p. 168 |
| Air filtration system filter cleaning interval | 500 hours | p. 193 |
| Main relief high-stage pressure (pressure up) | 350 bar (5075 psi) | p. 249 |
| Standard relief pressure | 330 bar to 335 bar (4785 psi to 4858 psi) | p. 249 |
| S255LC-V (Arm) øA | 140 mm (5.51 in) | p. 309 |
| S255LC-V (Boom) øA | 130 mm (5.12 in) | p. 309 |
| Hydraulic System Capacity | 290 liters | p. 58 |
Daewoo Solar 255LC-V Common Problems This Manual Covers
Daewoo Solar 255LC-V hydraulic functions weak and slow, all circuits sluggish, oil runs hot under load
Check the hydraulic reservoir level first; the system holds 290 liters total with a 155 liter reservoir. Drain a sample and look for foam, water, or metal particles. Test main relief pressure against the 330 to 335 bar standard on page 249, then chase pump regulator and pilot pressure faults if readings sag.
Manual Section: Hydraulic System Troubleshooting p. 249Boom or arm cylinder drifts down slowly with machine parked and controls in neutral
Mark the rod, load the bucket, and time the drift with controls in neutral. Inspect rod surfaces for scoring, then reseal the cylinder; boom and bucket bores run 130 mm and the arm is 140 mm, listed on page 309. If drift continues after new seals, look for control valve spool leakage.
Manual Section: Control Valve Troubleshooting p. 309Travel motor runs hot, loses pulling power on one side, grinding noise from final drive
Park on level ground, drain the final drive oil, and check for metal flakes or a burnt smell. Refill with clean gear oil and retest under load. If grinding continues, pull the travel motor for inspection; each unit weighs 85 kg, per page 373, so support it with a hoist before removal.
Manual Section: Travel Motor TroubleshootingEngine overheats under load, temperature gauge climbs, fan belt squeals at high idle
Clean the radiator and oil cooler fins with compressed air, blowing from the fan side outward. Check fan belt tension and replace any belt showing cracks or glazing. Clean the air filtration system element on the 500 hour interval shown on page 193; a plugged filter makes the engine work harder and run hot.
Manual Section: Engine and Drive Train p. 193Tracks keep going loose, shoe pins and bushings show heavy wear at mid life
Measure master pin bushing outside diameter against the wear tables on page 168: 59.0 mm is normal, 57.0 mm is the recommended limit, and 54.0 mm means replace. Turn or replace worn pins and bushings, then reset track tension. Check front idler axles too against page 170; 75.0 mm is normal.
Manual Section: Lower Structure and Chassis p. 168Frequently Asked Questions
How do I reset the service hour information for filters and oils on the Solar 255LC-V?
To reset the operating hours after changing a filter or oil, navigate to the 'Filter/Oil information' menu on the instrument panel. Once the specific filter or oil item is selected, use the 'Reset' function by pressing the Enter button to clear the current operating hours and start a new service interval. p. 587
How do I enter the special menu to access machine status and failure information?
To access the special menu, ensure the normal mode screen is displayed. Press the Enter button and the Escape button simultaneously for more than 3 seconds. This will switch the display from the normal mode screen to the special menu screen. p. 588
What is the procedure to reset the failure record for past errors?
Navigate to the 'Failure Log' screen within the special menu. Select the 'Delete Fail Log' mode. When prompted, press the Enter button to confirm 'YES' to delete all memorized records of past failures. The screen will display a deletion signal for 3 seconds before returning to the previous menu. p. 596
What is the fuel tank capacity for the Solar 255LC-V?
The fuel tank capacity for the Solar 255LC-V is 370 liters (98 U.S. gal). p. 121
What is the tightening torque for the mounting nuts on the cab floor?
The mounting nuts for the four corners of the cabin floor must be tightened to a torque of 20.2 kg•m (146 ft lb). p. 106
Do I get instant access to this Daewoo Solar 255LC-V Shop Manual?
Straight to your device: 668 pages of searchable Shop Manual, downloadable the moment payment goes through.
Can I print a copy of this Daewoo Solar 255LC-V Shop Manual for the shop?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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