All 460 pages of this Daewoo Solar 55-V Plus shop manual PDF (OEM #023-00045AE) focus on one job: getting your track excavator back to factory condition, from track assembly to bucket. You get the factory hydraulic schematic and full electrical schematic, plus step-by-step teardown and reassembly procedures for the main pump, travel motor, swing motor, cylinders, and main control valve. A standard torque section and troubleshooting charts for the drive train back up every repair. The hydraulic system holds 90 liters (24 U.S. gal.); torque 1/2-inch split flange bolts to 2.1-2.5 kg·m (15-18 ft lb) and refill the front idler with 260 cc of oil before you button up the undercarriage. Forum threads won't rebuild a travel motor for you. Download the bookmarked PDF, search any spec by keyword, and walk back to the machine with real numbers.
What's Inside This Daewoo Solar 55-V Plus Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-46 | Track Excavator Safety S0102035K |
| Specifications | 47-70 | Specifications for Solar 55-V Plus S0202035K |
| General Maintenance | 71-98 | General Maintenance Procedures S0302000, Standard Torques S0309000 |
| Upper Structure | 99-100 | Fuel Tank, Hydraulic Oil Tank, Engine, Radiator, Cab, Counterweight |
| Lower Structure and Chassis | 101-122 | Track Assembly S0505070 |
| Engine and Drive Train | 123-144 | Air Conditioner S0605015 |
| Accumulator | 145-152 | Gas-Charged Storage, Precharge Pressure, Hydraulic Fluid Reserve, Specifications |
| Center Joint (Swivel) | 153-160 | Hydraulic Oil Flow, 360-Degree Rotation, Inspection, Disassembly, Reassembly |
| Cylinders | 161-199 | Hydraulic Cylinder Operation, Piston Rod, Rod Stopper, Disassembly, Assembly, Special Tools |
| Travel Motor | 200-274 | Axial Piston Motor, Parking Brake, Reduction Gear, Troubleshooting, Performance Testing |
| Swing Motor | 275-280 | Revolution Motor, Counterbalancing, Relief Valve, Troubleshooting |
| Main Pump | 281-328 | Capacity Adjusting Piston, Swash Plate, Gear Pump, Test Operation, Maintenance |
| Main Control Valve | 329-388 | Neutral Position Operation, Travel Operation, Boom Operation, Bucket Operation, Arm Operation, Relief Valves |
| Pilot Control Valve (Work Lever / Joystick) | 389-406 | Theory of Operation, Parts List, Hydraulic Specifications, Special Tools, Disassembly, Reassembly |
| Hydraulic Schematic (Solar 55-V Plus) | 407-414 | General Description, Full Hydraulic Schematic S/N 1001-1200 and 31201-32135, Full Hydraulic Schematic S/N 32136 and Up |
| Electrical System | 415-436 | Electric Supply System, Engine Starting Circuit, Engine Preheating System, Engine Stop System, Charging System, Instrument Panel, Control Unit |
| Electrical Schematic (Solar 55-V Plus) | 437-444 | General Description, Full Wiring Schematic S/N 1001-1200 and 31201-32135, Full Wiring Schematic S/N 32136 and Up |
| Attachments | 445-460 | Bucket S0904000 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic oil capacity | 90 liters (24 U.S. gal.) | p. 58 |
| Split Flange 1/2" Bolt Torque | 2.1 - 2.5 kg•m (15 - 18 ft lb) | p. 94 |
| Split Flange 3/4" Bolt Torque | 3.0 - 3.7 kg•m (22 - 27 ft lb) | p. 94 |
| Track adjuster grease cylinder valve torque | 59 - 88 Nm (43 - 65 ft lb) | p. 107 |
| Front Idler assembly oil fill volume | 260 cc | p. 116 |
| Main pump hydraulic filter replacement interval | 500 hours | p. 292 |
| Gap Limit (Piston Assembly and Cylinder Block) | 0.050 mm (0.0197") | p. 308 |
| Engine Rated Output | 54 ps @ 2,200 rpm | p. 58 |
| Fuel Tank Capacity | 115 liters | p. 58 |
| Coolant Capacity | 10 liters | p. 58 |
| Swing Speed | 9.0 rpm | p. 58 |
| Maximum Breakout Force | 3,800 kg | p. 58 |
Daewoo Solar 55-V Plus Common Problems This Manual Covers
Daewoo Solar 55-V Plus hydraulic functions jerky and foamy oil in tank after filter service
Check the tank level first; the system holds 90 liters, and a low level pulls air into the suction line. Bleed air from the hydraulic system and confirm the pump case is filled with oil before restarting (page 291). Replace the hydraulic filter every 500 hours per the interval on page 292, sooner if oil looks milky.
Manual Section: Main Pump p. 292Whining noise from main pump under load, metal flakes showing up in the case drain oil
Drain a case oil sample and inspect it for grit. Disassemble the pump and measure the gap between piston assembly and cylinder block; the limit on page 308 is 0.050 mm (0.0197 inch). Check piston shoe to piston clearance too, 0.2 mm maximum. Replace worn rotating group parts before the pump seizes.
Manual Section: Main Pump p. 308All controls feel weak and slow to respond, joystick functions lag when hydraulic oil warms up
Test pilot pressure with a gauge on the pilot line; spec on page 394 is 28 kg/cm2 at full 6.5 mm lever stroke. If pressure reads low, check the pilot relief valve, set pressure 30 ±0.2 kg/cm2 (427 psi) per page 310. Replace the pilot filter and inspect the gear pump for wear if pressure still won't come up.
Manual Section: Main Control Valve p. 394Hydraulic oil overheating during normal digging, tank too hot to touch by mid morning
Measure oil temperature at the tank; anything over 90° C per page 293 will cook the fluid and seals. Check for a plugged return filter, replace it if past the 500 hour interval, and clean the oil cooler fins with compressed air. Drain and refill with fresh oil, 90 liters, if it smells burnt.
Manual Section: Main Pump p. 293One track travels slower than the other, machine pulls to one side on flat ground
Verify travel speeds on hard level ground; the machine should run 2.4 km/h in low and 3.8 km/h in high per the specs on page 58. Swap the travel hoses side to side to isolate motor versus valve. Follow the travel motor service procedures starting on page 201, and torque reamer bolts to 25.7 kg•m on reassembly.
Manual Section: Travel MotorFrequently Asked Questions
What is the replacement interval for the hydraulic oil?
The hydraulic oil should be replaced after every 2,000 hours of operation. This interval may be shortened depending on the degree of contamination and the load conditions. p. 293
What is the replacement interval for the hydraulic filters?
Hydraulic filters should be replaced after the initial period of operation, and then every 500 hours of operation thereafter. Check for unusual contamination daily until the first filter replacement. p. 292
What is the correct tightening torque for the reamer bolts on the travel motor?
The reamer bolts (Part No. 19) on the travel motor must be tightened to 25.7 ± 4.0 kg•m (252 ± 39.2 Nm / 186 ± 29 ft lb). p. 224
What is the required oil capacity for the travel motor reduction gear?
The reduction gear of the travel motor requires 1 liter (0.26 U.S. gal.) of lubrication oil. p. 268
What format is this Daewoo Solar 55-V Plus manual in?
A 460-page Shop Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Is this Daewoo Solar 55-V Plus Shop Manual printable?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Does this Daewoo Solar 55-V Plus Shop Manual include the hydraulic layout?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included. The full machine hydraulic schematic runs on pages 407-414. p. 407
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