Need factory-level depth on your mini excavator? This 392-page Kobelco SK10SR-3 shop manual PDF (OEM #S5PA0011E01) covers the complete machine: engine, hydraulic circuit, undercarriage, swing and travel systems, and every control component. Inside, you get a full hydraulic circuit schematic with pressure adjustment procedures, wiring diagrams, and a detailed troubleshooting section covering non-breakdown symptoms and fault-by-fault diagnosis. Teardown and rebuild procedures walk you through the hydraulic pump, control valve, swing motor, and travel motor, with a complete tightening torque list to back every fastener call. M12 track roller bolts torque to 78.4 to 98.0 N•m; the hydraulic oil tank drain (M14) calls for 117.6 to 147.0 N•m. Your machine is down. One download, search any spec by keyword, and get back to work.
What's Inside This Kobelco SK10SR-3 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 9-22 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 23-36 | 2-1 Specifications, 2-2 Outline Drawing and Working Area, 2-3 Weight List of Main Parts, 2-4 Lifting Capacity List |
| Service Standards | 37-56 | Machine Performance, Engine, Undercarriage (Rubber Crawler Specifications), Controls, Hydraulic Equipment (Hydraulic Cylinders) |
| Engine | 57-98 | 4-1 Exploded View (General Layouts of Major Engine Components), 4-2 Measurement, Inspection and Adjustment, 4-3 Measurement Procedure, Service Data and Corrective Action |
| Hydraulic System | 99-132 | 5-1 Outline, 5-2 Hydraulic Circuit Schematic, 5-3 Circuit Operation, 5-4 Pressure Adjustment |
| Hydraulic Equipment | 133-252 | 6-1 Hydraulic Pump, 6-2 Control Valve, 6-3 Pilot Valve, 6-4 Cut-Off Valve, 6-5 Swing Motor, 6-6 Travel Motor |
| Adjustment and Repair | 253-344 | 7-1 Electrical Equipment and Engine of Machine, 7-2 Undercarriage, 7-3 Controls, 7-4 Swing Bearing, 7-5 Hydraulic Equipment, 7-6 Implement |
| Periodic Inspection and Servicing | 345-348 | 8-1 List of Periodic Inspection and Servicing |
| Fuel, Lube Oil and Grease Recommended | 349-352 | 9-1 List of Fuel, Lube Oil and Grease Recommended |
| Troubleshooting | 353-390 | 10-1 Non-Breakdowns, 10-2 Troubleshooting |
| Reference Data | 391-392 | 11-1 Specifications for Attachment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller mounting bolt (M12) | 57.9 to 72.3 ft•lbf (78.4 to 98.0 N•m) | p. 51 |
| R (PT) plug (1/8) | 7.2 ft•lbf (9.8 N•m) | p. 53 |
| Pipe joint bolt (M8) | 9.4 to 12.3 ft•lbf (12.7 to 16.7 N•m) | p. 53 |
| Track roller (M12) | 57.9 to 72.3 ft•lbf (78.4 to 98.0 N•m) | p. 51 |
| Sprocket (Hexagon socket head bolt M10) | 32.6 to 43.4 ft•lbf (44.1 to 58.8 N•m) | p. 51 |
| Hose clip (32, 38) | 2.2 ft•lbf (2.9 N•m) | p. 51 |
| Hose clip (22 or larger) | 2.2 to 2.9 ft•lbf (2.9 to 3.9 N•m) | p. 51 |
| Nipple valve (M16) | 36.2 (49.0) ft•lbf (N•m) | p. 51 |
| Rubber crawler A (height) Standard | 0.59 (15) in. (mm) | p. 45 |
| Rubber crawler A (height) Wear limit | 0.31 (8) in. (mm) | p. 45 |
| System relief valve No.1 (Piston pump P1) Set pressure | 2986.2 (20.6) PSI (MPa) | p. 127 |
| System relief valve No.2 (Piston pump P2) Set pressure | 2986.2 (20.6) PSI (MPa) | p. 127 |
Kobelco SK10SR-3 Common Problems This Manual Covers
Kobelco SK10SR-3 hydraulic functions slow or bucket loses lifting force mid-cycle p. 365
Check hydraulic oil level first — tank capacity is 3.78 Gals (page 26), top off to the sight glass mark. Verify system relief pressure at 2986 PSI (page 127); if it reads low, the pump may be bypassing internally. Inspect hose clips at specified torques: 2.2 ft•lbf for size 32/38 clips (page 51). Check the filter for blockage and bleed any air trapped after recent service.
Manual Section: Hydraulic Implement Does Not Move or Operation Is SlowGrease fittings won't take grease, pins dry after service p. 51
Remove each zerk and clear it with a wire probe before attempting to pump. Torque replacement nipple valves (M16) to 36.2 ft•lbf (49.0 N•m) per page 51. If the fitting accepts grease but the joint stays dry, the internal passage is blocked — remove the pin, clean the bore, and confirm grease exits at both ends before reinstalling. Check the grease type against the recommended list on page 349.
Manual Section: Fuel, Lube Oil and Grease RecommendedTrack sags or throws off, tension out of spec after normal work p. 45
Measure lug height on the rubber crawler — standard is 0.59 in. (15 mm), replace the track at or below the wear limit of 0.31 in. (8 mm) per page 45. Adjust the grease tensioner and torque the stopper bolt and nut (M16) to 123.0 to 151.9 ft•lbf (166.7 to 205.8 N•m) shown on page 51. Confirm idler mounting bolts (M12) are at 57.9 to 72.3 ft•lbf before returning to service.
Manual Section: Undercarriage (Rubber Crawler Specifications)Damp spots on hoses or wet fittings after pressure work p. 15
Identify the leaking hose or fitting as the source by wiping the area dry and running a pressure cycle to confirm the exact origin. Check that hose fittings are torqued to specification per the tightening torque list (pages 49-55). For high-pressure rubber hoses (SAE J517, 100R1) inspect the inner bore for wear; replace any hose below the working pressure rating. If a fitting is weeping, verify the correct hose type code and nominal diameter match the circuit requirements per page 14 before replacing.
Manual Section: General Cautions for Maintenance WorkFrequently Asked Questions
What is the hydraulic pressure adjustment procedure for a KOBELCO SK10SR-3?
To adjust the hydraulic pressure for System Relief Valves, extend the arm cylinder to its stroke end or the bucket cylinder to its stroke end. Loosen the M14 nut and turn the adjust screw to set the pressure to 2986.2 PSI (20.6 MPa) at 2.90 GPM (11 L/min). For Circuit Relief Valves, extend the arm cylinder or retract the boom cylinder to its stroke end, then loosen the M14 nut and turn the adjust screw to set the pressure to 3412.8 PSI (23.5 MPa) at 1.32 GPM (5 L/min). The tightening torque for the M14 nut is 14.5 ft·lbf (19.6 N·m), which changes the pressure by 1763.3 PSI (12.2 MPa) per turn of the adjust screw.
What are the replacement specifications for Hydraulic hoses?
Hydraulic hoses are specified by their material code, type code, nominal diameter code, nominal length code, and fittings combination code. For high-pressure rubber hoses (SAE J517, 100R1), inner diameters range from 0.25 in. (6.3 mm) to 0.50 in. (12.7 mm) with working pressures from 1564 PSI (10.8 MPa) to 2489 PSI (17.2 MPa). For high-pressure plastic hoses (SAE J517, 100R7), inner diameters range from 0.25 in. (6.3 mm) to 0.50 in. (12.7 mm) with working pressures from 2986 PSI (20.6 MPa) to 4266 PSI (29.4 MPa).
How do you fix kobelco SK10SR-3 hydraulic functions slow or bucket loses lifting force mid-cycle?
Check hydraulic oil level first — tank capacity is 3.78 Gals (page 26), top off to the sight glass mark. Verify system relief pressure at 2986 PSI (page 127); if it reads low, the pump may be bypassing internally. Inspect hose clips at specified torques: 2.2 ft•lbf for size 32/38 clips (page 51). Check the filter for blockage and bleed any air trapped after recent service.
How do you fix grease fittings won't take grease, pins dry after service?
Remove each zerk and clear it with a wire probe before attempting to pump. Torque replacement nipple valves (M16) to 36.2 ft•lbf (49.0 N•m) per page 51. If the fitting accepts grease but the joint stays dry, the internal passage is blocked — remove the pin, clean the bore, and confirm grease exits at both ends before reinstalling. Check the grease type against the recommended list on page 349.
What do I get after purchasing this Kobelco SK10SR-3 manual?
This is a 392-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Are there any print restrictions on this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Are there hydraulic schematics in this Kobelco SK10SR-3 manual?
Yes, this Kobelco SK10SR-3 Shop Manual includes hydraulic system diagrams, circuit schematics, and component specifications.
Reviews
There are no reviews yet.