Part of the Yanmar Repair Manuals.
Need the factory reference for your Kobelco SK18 or SV18? This 410-page Yanmar 3TNV70-VBVA2 SK18 Shop Manual (OEM #S5PFB101E) covers every system on both mini excavators, from the 3-cylinder diesel to the full hydraulic circuit. Open to the hydraulic section and you get full circuit schematics tracing fluid from pump through control valve, pilot valve, swing motor, and travel motor. Inside: a complete troubleshooting guide, error code tables for the electric system, page after page of exploded views, and step-by-step rebuild procedures for every major assembly. Torque the cylinder head bolts to 53.9 to 57.9 N•m; set fuel injection pressure between 12.3 and 13.28 MPa. Your machine is down and the clock is running. Bookmarked and searchable, it opens on any device; bring it to the machine and start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Shop Manual Cover | 1 | Model, Applicable Number, Book Code, Date |
| General Cautions for Maintenance Work | 4-15 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 16-37 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List, Specifications for Attachment, Periodic Inspection and Servicing, Fuel |
| Service Standards | 38-65 | Machine Performance, Undercarriage, Controls, Hydraulic Equipment, Implement, List of Tightening Torque, Pressure Adjustment |
| Engine | 66-199 | Safety, Fuel System, Cooling System, Lubrication System, Starter Motor, Alternator, Electric Wiring |
| Electric System | 200-219 | Electric Equipment of Machine, Circuit Description of Engine Start and Stop, Error Code List |
| Hydraulic System | 220-313 | Outline, Circuit Operation, Hydraulic Pump, Control Valve, Pilot Valve, Swing Motor, Travel Motor |
| Adjustment and Repair | 314-348 | Engine and Electric Equipment, Undercarriage, Controls, Swing Bearing, Hydraulic Equipment, Implements |
| Troubleshooting | 349-410 | Non-Breakdowns |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| SV18 (Engine: 3TNV70-VBVA2) | ||
| Cylinder head bolt tightening torque | 53.9 to 57.9 N•m | p. 58 |
| Fuel injection pressure (Standard) | 12.3 to 13.28 MPa | p. 25 |
| Cold starting aids capacity | 12-120 V - W | p. 26 |
| Glow plug tightening torque | 14.7 to 19.6 N•m | p. 58 |
| Battery type (JIS) | 65B24 | p. 26 |
| Battery voltage - 5 hrs rate capacity | 12-36 V - Ah | p. 26 |
| Fuel filter filtration area | 432 cm² | p. 25 |
| Air cleaner filtration area | 4400 cm² | p. 25 |
| 3TNV70-VBVA2 | ||
| Fuel injection pressure (Test and Adjustment) | 12.3 to 13.3 MPa | p. 47 |
| All Models | ||
| Air cleaner intake hose clip tightening torque | 2.5 to 3.5 N•m | p. 54 |
| Radiator hose clip tightening torque (Hose clip 25) | 2.5 to 3.5 N•m | p. 54 |
| Fuel filter periodic replacement interval (dusty atmosphere) | Every 250h | p. 32 |
