Chasing factory numbers for a Kobelco SK15MSR, SK16MSR Shop & Parts Manual PDF? This 587-page Shop & Parts Manual (OEM #S5PF0002E) covers both mini hydraulic excavators front to back. Inside: full hydraulic circuit schematics with operation theory, wiring diagrams for the electrical system, and complete teardown procedures for the bucket, arm, boom, swing, and dozer assemblies. You also get a dedicated hydraulic trouble-diagnosis section plus engine service data with measuring procedures and corrective actions. Set the main relief valves (P1, P2) to 210 kgf/cm2 (2990 psi), then torque a 1/8 PF flare-type hose fitting to 1.5 kgf-m; those numbers come from Kobelco engineers, not a forum thread. Your excavator is down and burning money. Grab the download, hit the bookmarks, and pull up any spec by keyword right from your phone in the shop.
What's Inside This Kobelco SK15MSR, SK16MSR Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications | 1-2 | Components Name, Machine Dimensions, Specifications and Performance, Machine & Components Weight, Transportation Dimensions and Weight, Crawler Shoes, Buckets |
| Maintenance | 3-6 | Specifications, Attachment Dimensions, Tools, Maintenance Time Table, Test Procedures |
| Installation Procedures for Optional Attachments | 7-83 | General Precautions for Repairs, International Unit Conversion System, Components Name, Machine Dimensions, Specifications and Performance |
| System | 84-189 | Hydraulic Circuit Operation |
| Disassembling | 190-380 | Attachment Assy and Name, Bucket, Arm, Boom, Swing, Dozer |
| Troubleshooting | 381-410 | Trouble Diagnosis: Hydraulic |
| Engine | 411-587 | Specifications and Performance, Cross Sectional Views, Cooling Water, Lubricating Oil and Fuel Oil, Measuring Procedure, Service Data and Corrective Action |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Metric Coarse Thread Standard Tightening Torque (M6, No Lubrication) | 0.45 ± 0.05 kgf-m | p. 54 |
| Metric Coarse Thread Standard Tightening Torque (M36, No Lubrication) | 105 ± 10 kgf-m | p. 54 |
| Hydraulic Hose (30° Flare Type) Tightening Torque (1/8 PF) | 1.5 ± 0.2 kgf-m | p. 55 |
| Setting pressure at main relief valve (P1,P2) | 210 kgf/cm2 (2990 psi) | p. 132 |
| Setting pressure at port A2, A5 (over load) relief valve | 280 kgf/cm2 (3980 psi) | p. 132 |
| 2-Speed shifting pressure | 15 kg/cm2 (210 psi) | p. 148 |
| Rated operating pressure | 210 kg/cm2 (2990 psi) | p. 148 |
| Swivel joint weight | Approx 12 kgf (26 lbs) | p. 157 |
| Swivel joint max working pressure | 210 kgf/cm2 (2990 psi) | p. 157 |
| Hydraulic System Pressure | 210 kgf/cm2 | p. 28 |
| Engine Output Rating | 12.1 PS / 2,000 rpm | p. 20 |
| Hydraulic Oil Capacity | 17 liters | p. 21 |
Kobelco SK15MSR, SK16MSR Common Problems This Manual Covers
Kobelco SK15MSR hydraulic pump making loud whining noise, bucket and boom barely move
Check hydraulic oil level first; the tank holds 17 liters and running low lets the pump suck air. Inspect the suction hose for collapse or cracking and pull the strainer to check for sludge. Retighten loose suction fittings, then bleed the pump. Follow the pump diagnosis steps starting on page 381 if noise continues.
Manual Section: Hydraulic System Troubleshooting p. 381Machine pulls to one side while traveling, left track noticeably weaker than right
Measure main relief pressure on both pump circuits; the setting is 210 kgf/cm2 (2990 psi), listed on page 132. If both sides check good, pressure test the swivel joint at 315 kgf/cm2 (4480 psi) using the data on page 157 to find internal seal leakage feeding the weak track. Check the travel control valve spool for sticking last.
Manual Section: Hydraulic System Troubleshooting p. 381All hydraulic functions dead or extremely weak after startup, engine runs fine
Verify oil level in the tank; full capacity is 17 liters per page 21, and a half-empty tank starves the pump. Drain a sample and inspect for milky or contaminated oil, then clean the suction strainer. Crack a delivery fitting at idle to confirm flow before condemning the pump; work through the checks beginning on page 381.
Manual Section: Hydraulic System Troubleshooting p. 381Hydraulic oil weeping at hose fittings and connectors around the boom base
Clean each fitting dry, run the machine, and trace the fresh oil back to its source. Retorque 30 degree flare fittings to spec; the 1/8 PF size takes 1.5 ± 0.2 kgf-m per the chart on page 55. Replace any hose with a cracked or abraded cover rather than retightening it, and never adjust a fitting under pressure.
Manual Section: Installation Procedures for Optional Attachments p. 55Boom, arm, and swing response sluggish and inconsistent once oil warms up
Check pilot pressure and control valve operation first; a sticking main spool or pilot valve causes lazy response. Test the main relief valves against the 210 kgf/cm2 (2990 psi) setting on page 132. If you disturb the pilot valve during inspection, retighten its lock nut to 4.2 kgf·m per page 124, then work the troubleshooting flow on page 381.
Manual Section: Hydraulic System Troubleshooting p. 381Frequently Asked Questions
What are the replacement specifications for hydraulic hoses?
When replacing flexible hoses, use the appropriate parts as different parts are used depending on the working pressure, even if the size of the fitting and the total length of the hose are the same. Tighten the fitting at the specified torque and ensure no kink, tension, interference, or oil leakage is recognized. p. 11
What is the tightening torque for the cylinder head bolts on a 3TNE74 engine?
The tightening torque for the cylinder head bolts on a 3TNE74 engine is 6.0–6.5 kgf-m (M9 x 1.25). p. 501
What is the standard valve clearance for the intake and exhaust valves on the engine?
The standard valve clearance for both intake and exhaust valves on all models is 0.15 to 0.25 mm when the engine is in a cold state. p. 445
What is the procedure for bleeding air from the hydraulic cylinder?
After removing or installing a hydraulic cylinder, start the engine and let it idle for about 5 minutes. Then, repeat the step of extending and retracting the cylinder 4 or 5 times at a slow engine speed, moving the piston rod 50 to 100 mm short of its stroke end. Finally, perform the procedure at high idling speed and move the piston rod to its stroke end at low idling speed to operate the relief valve. p. 218
What is the standard compression pressure for the 3TNE84 engine?
The standard compression pressure for the 3TNE84 engine is 33 ± 1 kgf/cm² at 250 rpm. p. 443
What do I get after purchasing this Kobelco SK15MSR manual?
Immediate download of the complete 587-page searchable Shop & Parts Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print just the pages I need from this Kobelco SK15MSR manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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