Taking the Daewoo Solar 030 Plus and 035 hydraulic excavators apart one system at a time, this 143-page Solar 035 operation and maintenance manual PDF runs from the main pump and control valve through the swing and travel motors to the last track roller. A hydraulic line diagram traces oil from pump to actuators, and the electrical circuit diagram sits right beside its own troubleshooting section. Undercarriage work fills a solid share of the book: crawler, idler, track roller and sprocket rebuilds with maintenance standards, spring specs for the track tension adjusting cylinder, and the procedure for swapping your steel crawlers to rubber. Run M8 grade 7T bolts to 2.40 to 2.80 kg•m and a PT1/4 adaptor to 3.5 to 4.5 kg•m. A guessed torque costs you a second teardown. Bookmarks and a live text layer find any spec fast, and the pages print clean enough to live on the bench and soak up hydraulic oil.
What's Inside This Daewoo SOLAR 030 PLUS, SOLAR 035 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 4-25 | Safety Information, Safety Messages, Safe Operation, Locatoion of Safety Labels |
| General Information | 26-42 | Excavator Major Components, Excavator External View and Operating Space, Specification, Weight of Major Attachments and Components, Excavator Identification Number |
| Working Attachments | 43-49 | Maintenance Standards, Inspection and Correction |
| Engine | 50-52 | Engine Specifications, Engine Performance Curve |
| Main Pump | 53-59 | External Views, Pump Removal and Installation, Hydraulic Pump Performance Test |
| Hydraulic Oil Filter | 60-65 | Piping Diagram, Maintenance Procedure |
| Control Valve | 66-78 | Specifications, Disassembly and Reassembly, Each Valve, Cautions When Handlings |
| Swing Motor | 79-87 | Specifications, Operation, Inspection and Adjustment, Maintenance Standards |
| Travel Motor | 88-100 | Specifications, Operation, Care, Running Speed |
| Hydraulic Cylinder | 101-107 | Disassembly, Assembly |
| Swivel Joint | 108-111 | Specifications, Disassembly, And Reassembly |
| Joy Stick | 112-115 | Specifications, Operation, Pilot Valve |
| Solenoid Valve | 116-120 | Specifications, Operation, Relief Valve |
| Crawlers | 121-126 | Specifications and Construction, Disassembly and Reassembly, Maintenance Standards |
| Idler | 127-129 | Disassembly and Reassembly, Maintenance Standards, Oil Seal |
| Track Tension Adjusting Cylinder | 130-132 | Spring Specifications, Disassembly and Reassembly |
| Track Roller | 133-135 | Maintenance Standards |
| Sprocket | 136-137 | Disassembly and Reassembly, Maintenance Standards, Sprocket Tooth Width |
| Crawler Replacement Procedure | 138-139 | Steel Crawler Mounting Procedure, Replacement of Steel Crawlers with Rubber Crawlers |
| Electrical Device | 140-143 | Electrical Circuit Diagram, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bolt and nut tightening torque (M6, 4T) | 0.80~0.95 kg•m | p. 40 |
| Bolt and nut tightening torque (M8, 4T) | 1.80~2.10 kg•m | p. 40 |
| Bolt and nut tightening torque (M6, 7T) | 1.00~1.15 kg•m | p. 40 |
| Bolt and nut tightening torque (M8, 7T) | 2.40~2.80 kg•m | p. 40 |
| Adaptor tightening torque (PT1/4) | 3.5~4.5 kg•m | p. 40 |
| Adaptor tightening torque (PT3/8) | 4.5~5.5 kg•m | p. 40 |
| P1 main relief pressure | 200 kg/cm2 | p. 63 |
| P2 main relief pressure | 200 kg/cm2 | p. 63 |
| Suction filter (Y-3794) pressure resistance | 1 kg/cm2 | p. 58 |
| Return filter (SP10) BY-Pass open pressure | 1.05 kg/cm2 | p. 61 |
| Main pump (Solar 030 Plus) P1, P2 maximum pressure | 200 kg/cm2 | p. 50 |
| Rubber crawler track roller to crawler contact distance | 10~15mm | p. 124 |
Daewoo SOLAR 030 PLUS, SOLAR 035 Common Problems This Manual Covers
Daewoo Solar 030 Plus/035 starter pinion not sliding out and starter not rotating
Check each branch of the starter troubleshooting chart on page 141, starting with pinion not sliding and starter not rotating. Trace the starter circuit on the wiring diagram on page 140 before you pull the starter off the engine. If the starter will not stop once the engine fires, follow that branch of the same chart.
Manual Section: Starter Troubleshooting p. 141Alternator not charging, battery overcharged, or pilot lamp lighting with engine running
Check the fuse first; a broken or open fuse appears in both the regulator and alternator troubleshooting charts. Match your exact symptom (fails to charge, insufficiently charged, overcharged, unstable current) against both charts, and inspect the alternator joints. Trace the charge circuit on the wiring diagram on page 140 before condemning either unit.
Manual Section: Electrical Device p. 140Main hydraulic pump suspected when boom, arm, bucket, and swing operating speeds are slow
Measure boom, arm, bucket, and swing operating speeds first using the speed measurement procedure in the Working Attachments section on page 49. If speeds are low, connect the instruments and run the hydraulic pump performance test on page 58, plotting results against the P-Q curves. Verify P1 and P2 main relief pressure at 200 kg/cm2 per page 66.
Manual Section: Hydraulic Pump Performance Test p. 58Boom, arm, bucket, or dozer cylinder drifting down on its own with spontaneous settlement
Measure cylinder displacement for the boom, arm, bucket, and dozer using the spontaneous settlement procedure in the Working Attachments section on page 48, and compare each reading to the maintenance standards there. Isolate the cylinder that exceeds the standard. Remove and disassemble that cylinder following the Hydraulic Cylinder section on page 101, then reassemble per the same section.
Manual Section: Working Attachments p. 48Rubber crawler running loose with track roller to crawler gap out of spec
Measure the distance between the track roller rolling surface and the crawler contact surface; on the SOLAR 030 Plus it should read 10~15mm per page 124. Adjust tension at the cartridge valve following the Crawlers section, then tighten the cartridge valve to 6~9 kg·m once tension is correct.
Manual Section: Crawlers p. 124Hydraulic return filter clogged and oil contaminated with filter running in by-pass
Replace the return filter following the maintenance procedure on page 63, and inspect the suction filter and pilot line filter while the system is open. The return filter by-pass opens at 1.05 kg/cm2 per page 61, so a loaded filter quietly stops filtering long before anything fails.
Manual Section: Hydraulic Oil Filter p. 63Frequently Asked Questions
What are the hydraulic relief-valve torque specifications for the SOLAR 030 PLUS?
For the main relief valve on the SOLAR 030 PLUS, the relief valve fixing torque is 3.0~3.5 kg·m. The cap nut tightening torque for the same valve is 1.5~2.0 kg·m. p. 77
What are the replacement specifications for the hydraulic return filter and suction filter on the Daewoo Solar 030 Plus?
The suction filter (Y-3794) has a grain size of 105 µ and a filtering ability of 120 L/min. The return filter (SP10) also has a grain size of 105 µ and a filtering ability of 120 L/min, with an open pressure of 1.05 kg/cm² for the bypass. p. 61
What is the tightening torque for the travel motor sprocket mounting bolts on the Daewoo SOLAR 030 PLUS, SOLAR 035?
The tightening torque for the sprocket mounting bolt is 11.5 kg·m. p. 136
What is the recommended oil capacity for the hydraulic oil tank on the SOLAR 030 PLUS and SOLAR 035?
The hydraulic oil tank capacity for the SOLAR 030 Plus is 60 liters, and for the SOLAR 035 it is 70 liters. p. 64
What is the standard tightening torque for an M12 bolt of 7T grade on the Daewoo SOLAR 030 PLUS, SOLAR 035?
The standard tightening torque for an M12 bolt of 7T grade (S40C, S45C) is 7.90~9.20 kg·m. p. 40
How quickly can I access this Daewoo Solar 030 Plus manual after buying?
Straight to your device: 143 pages of searchable Operation and Maintenance manual, downloadable the moment payment goes through.
Can I print pages of this Daewoo Solar 030 Plus manual for my own shop?
Yes. Print the pages you need for the job in your own shop, and bin them when they get greasy.
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