Daewoo wrote this one for a single machine: the Solar 175LC-V track excavator, 686 pages, OEM #023-00063E. The hydraulic schematic for the 175LC-V is printed in full, with the boom, arm, bucket, swing and travel circuits traced one at a time, and the electrical schematic is there for hunting shorts through the harness. Teardown and reassembly cover the Rexroth main pump, swing motor, TM24VA travel motor, cylinders, center joint, swing bearing and track assembly, backed by a hydraulic troubleshooting and testing section. The fuel tank holds 280 liters (74 U.S. gallons); pull 3/4-inch split flange bolts to 3.0 to 3.7 kg·m (22 to 27 ft lb). Bookmarked with a real text layer: type the spec, jump to the page, get back in the seat.
What's Inside This Daewoo Solar 175LC-V Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-46 | Track Excavator Safety S0102000 |
| Specifications | 47-70 | Specifications for Solar 175LC-V S0202075K |
| General Maintenance | 71-98 | General Maintenance Procedures S0302000, Standard Torques S0309000 |
| Upper Structure | 99-164 | Cab S0402040K, Counterweight S0403050K, Fuel Tank S0405085K, Fuel Transfer Pump S0405500, Swing Bearing S0407000, Swing Reduction Gearbox S0408050 |
| Lower Structure and Chassis | 165-194 | Track Assembly S0505110 |
| Engine and Drive Train | 195-232 | Air-Conditioner S0605060K, Drive Coupling (Main Pump) S0609010K |
| Hydraulic System Troubleshooting, Testing and Adjustment | 233-264 | Hydraulic Schematic, Boom Operating Circuit, Arm Operating Circuit, Bucket Operating Circuit, Swing Operating Circuit, Travel Operating Circuit |
| Accumulator | 265-270 | Accumulator General Description, Accumulator Specifications, Pre-Charge Pressure |
| Center Joint (Swivel) | 271-280 | Center Joint General Description, Center Joint Disassembly, Center Joint Reassembly, Inspection |
| Cylinders | 281-320 | Cylinder Theory of Operation, Cylinder Disassembly, Cylinder Assembly, Piston Nut, Steel Bush Jig, Dust Wiper Jig |
| Swing Motor | 321-352 | Swing Motor Theory of Operation, Swing Brake Operation, Swing Motor Disassembly, Swing Motor Reassembly, Cleaning and Inspection |
| Travel Motor (with Gearbox) (TM24VA) | 353-406 | Travel Motor Theory of Operation, Brake Valve, Parking Brake, Reduction Gearbox Operation, Travel Motor Disassembly, Travel Motor Reassembly |
| Main Pump (Rexroth) | 407-462 | Sectional View, Seal Kits and Sub-Assemblies, Sealing the Drive Shaft, Control Module LR, Valve Plate with Valves, Rotary Group Removal and Re-Fitting, Inspection, Pump Assembly, Hydraulic Component Measurement |
| Main Control Valve | 463-530 | Control Valve Operation, Arm Priority Circuitry, Bucket Junction Circuitry, Straight Traveling Circuit, Main Relief Valve Adjustment, Overload Relief Valve, Arm and Boom Load Holding Valves, Arm Regeneration, Control Valve Drawing and Hydraulic Circuit |
| Pilot Control Valve (Work Lever / Joystick) | 531-550 | Theory of Operation, Parts List, Torque and Performance Specifications, Removal, Disassembly, Wear Limits and Tolerances, Reassembly, Installation, Start-Up Procedures |
| Travel Control Valve (with Damper) | 551-574 | Pressure Reducing Valve, Operating Theory of Damper Mechanism, Troubleshooting Testing and Adjustment, Removal, Disassembly, Wear Limits and Tolerances, Installation, Start-Up Procedures |
| Hydraulic Schematic (S175LC-V) | 575-580 | General Description, Full Hydraulic Schematic for the Solar 175LC-V S0792125K |
| Electrical System | 581-658 | Troubleshooting Electrical System, Electric Supply System, Engine Starting Circuit, Engine Preheating and Stop Systems, Charging System, Monitoring System, Instrument Panel, Warning and Indicator Lights, Graphic Information Area Display |
| Electrical Schematic (S175LC-V) | 659-664 | General Description, Full Electrical Schematic for the Solar 175LC-V S0892143K |
| Attachments | 665-684 | Boom and Arm S0902100, Bucket S0904005K |
| Publication Request for Proposed Revision | 685-686 | Company Information, Machine Identification, Manual Identification, Correction Description, Service Representative Contact |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Torque for 1/2" split flange | 2.1 - 2.5 kg•m (15 - 18 ft lb) | p. 94 |
| Torque for 3/4" split flange | 3.0 - 3.7 kg•m (22 - 27 ft lb) | p. 94 |
| Fuel tank capacity | 280 liters (74 U.S. gal) | p. 121 |
| Fuel tank mounting bolt torque | 27 kg•m (195 ft lb) | p. 127 |
| Standard 600 mm Shoe Dimension A | 18.0 mm (0.71 in) | p. 171 |
| Standard 600 mm Shoe Dimension B | 11.0 mm (0.43 in) | p. 171 |
| Lower roller, axle Dimension A | 60.0 mm (2.362 in) | p. 172 |
| Lower roller, bushing Dimension A | 60.0 mm (2.362 in) | p. 172 |
| Cab air-conditioner recirculation filter cleaning interval | 500 hours | p. 199 |
| Hydraulic reservoir return line filter rating | 10 micron | p. 239 |
| Pilot circuit filter rating | 10 micron | p. 239 |
| Pi control pressure adjustment | -0.7 kg/cm² (10 psi) per 1/2 turn | p. 253 |
Daewoo Solar 175LC-V Common Problems This Manual Covers
Daewoo Solar 175LC-V upper structure won't swing under load, brake drags and rotation stalls halfway
Check pilot pressure at the swing brake release port before pulling the motor. Test main relief pressure at the pump; it should hold 320 kg/cm2 in normal mode, spec on page 65. If pressures check out, drain the swing reduction gearbox (3.3 liter capacity, page 403) and inspect the oil for metal flake.
Manual Section: Swing Motor p. 321Main hydraulic pump noisy and slow, all functions weak at operating temperature
Run the engine at rated speed, 2,150 plus or minus 50 rpm, before condemning the pump. Test Pi control pressure at the regulator; each half turn of the adjuster changes it 0.7 kg/cm2 (10 psi), procedure on page 253. Inspect regulator piping for leaks, then pull the reservoir intake strainer (177 micron, page 239) and check for debris.
Manual Section: Main Pump (Rexroth) p. 407Hydraulic oil overheats and every function turns sluggish after an hour of steady digging
Clean the cooling package with compressed air; a plugged oil cooler cooks the system fast. Replace the return line filter (10 micron rating, page 239) and check for a collapsed element. Verify reservoir oil level; the reservoir holds 150 liters and a low level pulls air into the circuit, which foams the oil and kills cooling.
Manual Section: Hydraulic System Troubleshooting, Testing and Adjustment p. 233Machine pulls to one side during travel, one track weak or moving in jerks
Check track tension on both sides first; a track run too tight drags that side and chews the undercarriage. Swap travel lines at the control valve to isolate the motor from the valve. Measure lower roller axle-to-bushing clearance against the wear table on page 172; 1.0 mm (0.039 in) is the recommended maintenance limit and 1.3 mm (0.051 in) is the limit for use.
Manual Section: Travel Motor (with Gearbox) (TM24VA) p. 353Engine cranks but starts hard, idles rough, and lacks power under load
Drain water and sediment from the fuel tank; it holds 280 liters (74 U.S. gal) and condensation builds fast when parked half empty, capacity listed on page 121. Replace both fuel filters and bleed air from the lines to the injection pump. Watch the air cleaner indicator on the instrument panel; it lights and blinks when the engine air cleaner is clogged, circuit detail on page 603.
Manual Section: Engine and Drive Train p. 195Frequently Asked Questions
How do I reset fault codes on a Solar 175LC-V excavator?
To reset fault codes, you must first correct the underlying problem. Once the issue is resolved, the system will perform an automatic reset. For specific codes like 01, 02, or 03, you must turn the start switch from 'OFF' to 'ON' after the problem is corrected. p. 619
How do I check diagnostic codes on a Solar 175LC-V?
Diagnostic codes can be checked through the display on top of the e-EPOS controller box, which is located in the drawer under the operator's seat. The system operation status and malfunction codes are shown on this display. p. 650
What is the fuel tank capacity for the Solar 175LC-V?
The fuel tank capacity for the Solar 175LC-V is 280 liters (74 U.S. gal). p. 121
What is the tightening torque for the main control valve socket bolts?
The socket bolt tightening torque for the main control valve is 10 kg•m (72 ft lb). p. 503
Will this Daewoo Solar 175LC-V Shop Manual download right away?
Instant PDF download. You get the full 686-page searchable Shop Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print a copy of this Daewoo Solar 175LC-V Shop Manual for the shop?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Does this Daewoo Solar 175LC-V manual include hydraulic schematics?
Included. Hydraulic system schematics cover all circuits, control valves, and component specifications for the Daewoo Solar 175LC-V. The full schematic for the Solar 175LC-V is printed on pages 575 to 580, and the boom, arm, bucket, swing and travel circuits are traced individually starting on page 240.
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