Need the factory procedures for your Daewoo Solar 140LC-V hydraulic excavator? This 636-page Daewoo Solar 140LC-V Shop Manual PDF (OEM #023-00076E) covers the machine from swing bearing to track assembly. Inside: a full hydraulic schematic, electrical schematics for tracing wiring faults, and step-by-step teardown and reassembly procedures for the main pump, swing motor, travel motor, and main control valve. You also get cylinder rebuild instructions and a standard torque section covering metric fasteners from 0.15 to 103.00 kg-m. Set the motor makeup valve gauge pressure to 10 bar (145 psi), and torque hydraulic hose clamps to 0.5-0.6 kg-m, straight from the factory tables. No more chasing hydraulic pressure problems with borrowed numbers. Bookmarked with a full text layer; search any spec by keyword, pull it up on your phone, and get back to work.
What's Inside This Daewoo Solar 140LC-V Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-46 | Track Excavator Safety S0102000 |
| Specifications | 47-68 | Specifications for Solar 140LCV S0202130 |
| General Maintenance | 69-96 | General Maintenance Procedures S0302000, Standard Torques S0309000 |
| Upper Structure | 97-152 | Cab S0402040K, Counterweight S0403000, Fuel Tank S0405000, Fuel Transfer Pump S0405500, Swing Bearing S0407000, Swing Reduction Gearbox S0408020 |
| Lower Structure and Chassis | 153-178 | Track Assembly S0505050 |
| Engine and Drive Train | 179-220 | Air Conditioner S0605060K, Drive Coupling (Main Pump) S0609000 |
| Hydraulic System Troubleshooting, Testing and Adjustment | 221-254 | Hydraulic Schematic, Working Components, Pilot Pressure, Power Mode Valve, Pump Input Power Control |
| Accumulator | 255-260 | Accumulator General Description, Specifications, Charge Pressure, Volume |
| Cylinders | 261-300 | Cylinder Theory of Operation, Disassembly, Assembly, Piston Nut, Steel Bushing Jig, Dust Wiper Jig, Slipper Seal Jig |
| Swing Motor | 301-326 | Swing Motor Theory of Operation, Anticavitation Makeup Valve, Relief Valve, Swing Brake Operation, Disassembly, Reassembly |
| Travel Motor (with Gearbox) | 327-378 | Travel Motor Theory of Operation, Reduction Gearbox Operation, Disassembly, Reassembly, Special Tools |
| Main Pump (with Regulator) | 379-412 | Main Pump General Description, Pump Regulator Operation, Horsepower Control, Disassembly, Reassembly |
| Main Control Valve | 413-528 | Control Valve Operation, Swing Priority Circuit, Arm Priority Circuitry, Bucket Junction Circuitry, Straight Traveling Circuit, Plunger Replacement |
| Electrical System | 529-612 | Electrical System S0802220K, Electrical Schematic (S140LCV) S0892210 |
| Attachments | 613-636 | Boom and Arm S0902030, Bucket S0904000 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Torque Values for Standard Metric Fasteners | 0.15 kg•m to 103.00 kg•m | p. 87 |
| Torque Values for Standard U.S. Fasteners | 6 ft lb to 5760 ft lb | p. 89 |
| Torque Values for Hose Clamps (Hydraulic System) | 0.5 kg•m to 0.6 kg•m | p. 91 |
| Torque Values for Split Flanges (Hydraulic Systems) | 2.1 kg•m to 20.7 kg•m | p. 92 |
| Motor makeup valve gauge pressure | 10 bar (145 psi) | p. 247 |
| Motor makeup valve recommended minimum pressure | 2.5 bar (36 psi) | p. 247 |
| Solar 140LC-V Pilot / Travel Charge Pressure | 10 kg/cm2 (142 psi) | p. 258 |
| Main Relief Pressure (Normal) | 330 kg/cm2 | p. 64 |
| Main Relief Pressure (Pressure Up) | 350 kg/cm2 | p. 64 |
| Fuel Tank Capacity | 230 liters | p. 58 |
| Hydraulic System Capacity | 165 liters | p. 58 |
| Hydraulic Reservoir Capacity | 89 liters | p. 58 |
Daewoo Solar 140LC-V Common Problems This Manual Covers
Daewoo Solar 140LC-V accumulator still pressurized after engine shutdown, pilot lines spray fluid when fittings loosened
Work every joystick and pedal through full strokes with the engine off to bleed the accumulator before cracking any fitting. Verify pilot pressure has dropped to zero on a gauge; the accumulator holds a 10 kg/cm2 (142 psi) charge, listed on page 258, long after shutdown. Wear a face shield when breaking the first fitting.
Manual Section: Accumulator p. 258Hydraulic hoses cracked and weeping at pump outlet, oil misting near the main pump
Replace any hose showing cracks, blisters, or wet spots, starting with the pump outlet and branch lines. Torque split flange bolts between 2.1 and 20.7 kg•m depending on size per the chart on page 92, and hose clamps to 0.5 to 0.6 kg•m. Top off the system afterward; total hydraulic capacity is 165 liters.
Manual Section: General Maintenance p. 92Bucket and arm stall under load, all cylinders slow and weak in both work modes
Test main relief pressure at the pump with a gauge rated well above 400 kg/cm2. Normal setting is 330 kg/cm2, rising to 350 kg/cm2 in pressure up mode, per the specs on page 64. If readings come in low, adjust the main relief valve using the procedure starting on page 221, then retest both modes.
Manual Section: Hydraulic System Troubleshooting, Testing and Adjustment p. 221Whining or rattling noise from main pump, gets louder at full throttle
Check the reservoir oil level first; the reservoir holds 89 liters and a low level lets the pump pull air and cavitate. Inspect the suction line for loose clamps and retorque them to 0.5 to 0.6 kg•m. If the whine persists, pull the pump and inspect the regulator and rotating group, covered starting on page 379.
Manual Section: Main Pump (with Regulator) p. 379Swing drifts past target and coasts after joystick release, uneven rotation under load
Measure pressure at the swing brake SH port with the engine running; you need at least 4 bar (58 psi) to release the brake, per the values on page 247. Test the motor makeup valve against its 10 bar (145 psi) gauge spec too. Low readings point to pilot supply problems, not a worn motor.
Manual Section: Hydraulic System Troubleshooting, Testing and Adjustment p. 247Frequently Asked Questions
How do I reset the failure record for the Daewoo Solar 140LC-V?
To delete the memorized record of past failures, access the 'Failure Info' submenu within the special menu. Select 'Delete Fail Log' and press the Enter button. When 'YES' is selected, the records will be deleted, and the screen will display a deletion signal for 3 seconds before returning to the previous menu. p. 566
What is the torque specification for the main relief valve cap on the Solar 140LC-V?
The tightening torque for the main relief valve cap is 10 kg•m. p. 454
What is the replacement specification for the arm cylinder rod seal on the Solar 140LC-V?
The manual recommends replacing all O-rings and flexible seals during cylinder disassembly. Specifically, for the arm cylinder, the rod seal (20) and O-ring (19) should be replaced when disassembling the plug assembly (18). p. 490
What is the fuel tank capacity for the Solar 140LC-V?
The fuel tank capacity for the Solar 140LC-V is 230 liters (61 U.S. gal). p. 119
What is the standard torque for the main pump regulator mounting bolts?
The regulator mounting bolts (412, 413) are uneven in length and should be noted and replaced to the same location. The manual does not provide a specific torque value for these bolts, but emphasizes that they must be replaced in their original locations. p. 400
How quickly can I access this Daewoo Solar 140LC-V manual after buying?
Immediate download of the complete 636-page searchable Shop Manual. Access it on any device, from a laptop at your desk to a phone in the field.
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