Part of the Yanmar Repair Manuals.
When a C12R will not travel in either direction and the crew is standing around a stalled job, the real question is whether the fault sits in the H.S.T. drive or somewhere in the hydraulics, and guessing wrong costs the rest of the day. This Yanmar service manual (publication 0BKC2-EN0010) exists to answer that question for the C12R and C12R (3WD), serial numbers 20501 and up, powered by the 2TNE68-EFW diesel.
Across 202 pages it covers engine measurement and adjustment, hydraulic cylinders, oil tank and piping, the machine's electrical equipment with wiring diagrams, undercarriage service standards and tightening torques, periodic servicing, and a troubleshooting chapter for both the engine and the H.S.T.
It arrives as a PDF download the moment you pay, prints cleanly for the bench, and is yours to keep for the life of the machine.
Complete the set for your C12R, C12R (3WD)
- Parts Catalog: Yanmar C12R, 2TNE68-EFW Parts Catalog
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 6-17 | Hydraulic Equipment, Hydraulic Piping, Seals, Hydraulic Hose, H.S.T. System, Hydraulic Cylinders |
| Technical Data | 18-27 | Specifications, Machine Dimensions, Hydraulic Circuit Schematic, Wiring Diagram, Weight of Components |
| Service Standards | 28-41 | Machine Performance, Engine, Undercarriage, Control Devices, Hydraulic Cylinder, Work Implement, List of Tightening Torque (Machine) |
| Engine | 42-86 | Measurement |
| Structure and Operation | 87-98 | Electrical Equipment of Machine (Parts Layout of Electrical Equipment, Monitor and Alarm Systems, Wiring Diagram, Circuit Description of Engine Start and Stop, Circuit Description of Battery Charging) |
| Hydraulic Equipment | 99-132 | Hydraulic Cylinder, Hydraulic Oil Tank, Hydraulic Piping |
| Structure and Operation | 133-184 | Electrical Equipment, Undercarriage, Control Equipment, Power Transmission, Hydraulic Equipment, Wagon, Monitor and Alarm Systems, Rubber Crawler |
| Periodic Inspection and Servicing | 185-187 | Lube Oil, Hydraulic System, Undercarriage, Steering Equipment, Electric Equipment, Fuel, Cooling Water, Rubber Hose |
| Fuel, Lube Oil and Grease Recommended | 188-189 | Engine Oil, Transmission Oil, Hydraulic Oil, Fuel, Engine Cooling Water |
| Troubleshooting | 190-201 | Machine and Engine, H.S.T. |
| Colophon | 202 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller ass'y tightening torque | 115.7 to 123.0 ft-lbf (156.8 to 166.6 N•m) | p. 35 |
| Oil seal 24 cover screws tightening torque | 4.7 ft-lbf (6.4 N•m) | p. 124 |
| Fuel injection pressure | 1711 to 1842 PSI (11.8 to 12.7 MPa) | p. 22 |
| Radiator hose clip tightening torque | 1.81 to 2.17 ft-lbf (2.45 to 2.94 N•m) | p. 35 |
| Engine oil pressure switch working pressure | 5.69 to 8.53 PSI (0.04 to 0.06 MPa) | p. 135 |
| Engine Oil Pan Capacity | 1.90 Qts. (1.8 L) | p. 189 |
| Hydraulic Oil System Capacity | 4.36 Gals. (16.5 L) | p. 189 |
| Fuel Tank Capacity | 3.83 Gals. (14.5 L) | p. 189 |
| Dump Cylinder Nut Tightening Torque | 217 to 253 ft-lbf (294 to 343 N•m) | p. 38 |
| Engine Minimum Idling Speed | 1075 to 1125 rpm | p. 21 |
| Glow Plug Tightening Torque | 11.07 to 14.76 ft-lbf (15 to 20 N•m) | p. 86 |
