Part of the Yanmar Repair Manuals.
All 405 pages of the Yanmar ViO12 Service Manual are organized around one machine: the ViO12 compact excavator, from general maintenance cautions through engine, electrical, and hydraulic systems. Inside: a full hydraulic circuit schematic with circuit-by-circuit breakdowns for boom, arm, bucket, swing, and boom swing, plus a wiring diagram section that walks through alarm sensor performance, engine start/stop logic, and battery charge fault diagnosis. You also get a complete troubleshooting section, a tightening torque list for both machine and engine fasteners, and exploded engine views with step-by-step measurement and reassembly procedures. Set your M12 track roller mounting bolts to 78.4-98 N•m and the M10 sprocket bolts to 44.1-58.8 N•m. Stop guessing at undercarriage specs. Bookmarked and searchable, this PDF opens on any device; pull it up on your tablet and walk straight to the machine.
What's Inside This Yanmar ViO12 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 0 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment, Cautions for Removal and Installation of Hydraulic Piping, Cautions for Handling Seals, Correct Installation of Hydraulic Hose, Specifications of Hydraulic Hose, Air Release of Hydraulic Equipment |
| Technical Data | 0 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List |
| Service Standards | 0 | Machine Performance, Engine, Undercarriage, Controls, Hydraulic Equipment, Implement, List of Tightening Torque |
| Engine | 0 | Measurement, Inspection and Adjustment, Measurement Procedure, Service Data and Corrective Action, Precautions for Reassembly, Electrical Equipment |
| Electric System | 0 | Parts Layout of Electrical Equipment, Monitor and Alarm Systems, Wiring Diagram, Circuit Description of Engine Start and Stop |
| Hydraulic Equipment | 0 | Outline, Hydraulic Circuit Schematic, Circuit Operation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller mounting bolt (M12) tightening torque | 78.4 to 98 N•m | p. 52 |
| Sprocket Hexagon socket head bolt M10 tightening torque | 44.1 to 58.8 N•m | p. 52 |
| Rubber hose (SAE J517, 100R1) 02 working pressure | 2489 (17.2) PSI (MPa) | p. 16 |
| Fuel filter filtration area | 430 cm2 | p. 29 |
| LO filter filtration area | 800 cm2 | p. 29 |
| LO filter valve opening pressure | 0.08 to 0.12 kPa | p. 29 |
| Air cleaner filtration area | 0.9 m2 | p. 30 |
| Radiator hose band tightening torque | 2.9 N•m | p. 52 |
| Overall length (Transportation position) | 3040 mm | p. 24 |
| Engine Rated output / engine speed | 9.2/2000 KW/rpm | p. 28 |
| Hydraulic oil tank capacity | 14.3 L | p. 27 |
| System relief set pressure (P1, P2) | 20.6 MPa | p. 26 |
