Part of the Yanmar Repair Manuals.
Chase a C30R-2 that will not travel straight and you end up at the HST pump with a pressure gauge, needing the relief valve set point before anything you measure means a thing. That number, 27.46 MPa on the high pressure side, is in this book, along with the rest of the figures Yanmar published for the C30R-2 crawler carrier and its 3TNV88-FFW diesel.
The 344 page factory service manual works through the engine (valve clearance, injector pop pressure, main and rod bearing torque), the HST piston pump and motor, travel controls, tracks, and vehicle electrics, with removal and installation steps, service standards, and troubleshooting charts for machine, engine, and panel electrics.
It downloads as a bookmarked PDF in English. Print the pages you need, take them to the bench, and put the engine or the pump back together to the factory clearances.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 9-21 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 23-35 | Machine Specifications, Machine Dimensions, Power Transmission Mechanical Diagram, Hydraulic Circuit Diagram, Electric Wiring Diagram, Weight of Components |
| Service Standards | 37-53 | Machine Performance, Power Train Equipment, Undercarriage, Control Devices, Hydraulic Cylinder, Work Implement |
| Engine | 55-140 | General (How to Read This Manual, Engine External Views, Structural Description, Exhaust Gas Emission Regulation) |
| Structure and Operation | 141-156 | Component Parts Overview, Power Transmission Mechanism, Steering Mechanism, Auxiliary Equipment for Brake, Engine Start/Stop Circuit, Hydraulic Equipment Layout |
| Hydraulic Equipment | 157-223 | H.S.T. Piston Pump, H.S.T. Piston Motor, H.S.T. Troubleshooting, Control Valve Operation, Flow Divider, Pressure Adjustment |
| Adjustment and Repair | 225-310 | Electric Equipment of Vehicle, Undercarriage Removal/Installation, Controls Assembly/Adjustment, Power Transmission Removal/Installation, Hydraulic Equipment Removal/Installation |
| Periodic Inspection and Servicing | 311-314 | Daily Checks, 50/100/250/500/1000 Hour Service Intervals, Engine Oil, Fuel System, Cooling System, Hydraulic System, Undercarriage, Steering Equipment |
| Fuel, Lube Oil and Grease Recommended | 315-317 | Fuel Types, Engine Oil Grades, Hydraulic Fluid Types, Transfer Case Oil, Final Case Oil, Fluid Capacities, Antifreeze Mixture Ratios |
| Troubleshooting | 319-342 | Non-Breakdowns, Precautions for H.S.T. Troubleshooting, Machine and Engine Troubleshooting Charts, Electrical Equipment on Panel Troubleshooting Charts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller nut tightening torque | 393 to 441 N•m (40 to 45 kgf-m) | p. 245 |
| Engine mount vibroisolating rubber nut M12 tightening torque | 45 to 58 N•m | p. 51 |
| Engine to engine mount M10x30 (10.9T) bolt tightening torque | 64 to 73 N•m | p. 51 |
| Hydraulic suction filter / return filter replacement interval | 1st time (then regularly) | p. 313 |
| Fuel filter filtration area | 310 cm2 | p. 28 |
| Fuel filter element replacement interval | Every 250 hours | p. 87 |
| Hydraulic oil tank capacity | 5.0 Gal. (19 L) <Tank: 3.4 Gal. (13 L), Others: 1.6 Gal. (6 L)> | p. 26 |
| Hydraulic fluid type | ISO VG46 | p. 317 |
| Traveling speed (Forward Low 1st) | 0 to 2.5 MPH (0 to 4 km/hr) | p. 25 |
| Track deviation standard | 20 in. (500 mm) or less | p. 39 |
| Hydraulic cylinder air release procedure (extension/retraction distance) | 1.97 to 3.9 in. (50 to 100 mm) | p. 21 |
| Hydraulic cylinder air release procedure (slow extension/retraction repetitions) | 4 to 5 times | p. 21 |
