Part of the Yanmar Repair Manuals.
Drain the water separator, crack the fuel filter loose, and you still need to know why the 4TNV98C-WBV1 diesel stalls under load. This Yanmar ViO82 service manual (publication 0BKB3-EN0320) puts the answer next to the machine: 803 pages in English covering the engine, fuel, cooling, and lubrication systems, the electric system with engine and pump ECU descriptions and error codes, and the full hydraulic circuit from pump and control valve to swing and travel motors.
The Service Standards chapter gives you the numbers that settle arguments: relief pressures, valve clearances, tightening torques, and fluid capacities. Adjustment and Repair walks through undercarriage, swing bearing, controls, hydraulic equipment, cabin, and air conditioner work, and a quick reference troubleshooting table ties symptoms back to procedures.
It is a searchable PDF, so it rides on the laptop or tablet that goes where the excavator goes. When the machine stops, the manual is already on site.
Complete the set for your ViO82
- Parts Catalog: Yanmar ViO82 Parts Catalog (Excavator)
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 12-60 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Service Standards | 61-90 | 3-1 Machine Performance, 3-2 Engine, 3-3 Undercarriage, 3-4 Controls, 3-5 Hydraulic Equipment, 3-6 Implement, 3-7 List of Tightening Torque, 3-8 Pressure Adjustment |
| Engine | 91-247 | 4-1 Safety, 4-2 Engine, 4-3 Fuel System, 4-4 Cooling System, 4-5 Lubrication System, 4-6 Starter Motor, 4-7 Alternator, 4-8 Electronic Control System |
| Electric System | 248-314 | 5-1 Electric Equipment of Machine, 5-2 Circuit Description of Engine Start and Stop, 5-3 Engine ECU (Engine Controller), 5-4 Pump ECU (Pump Controller), 5-5 Error Code |
| Hydraulic System | 315-594 | 6-1 Outline, 6-2 Hydraulic Pump, 6-3 Control Valve, 6-4 Pilot Valve, 6-5 Swing Motor, 6-6 Travel Motor, 6-7 Pump Control Proportional Solenoid Valve, 6-8 Cutoff Valve |
| Adjustment and Repair | 595-784 | 7-1 Engine and Electric Equipment, 7-2 Undercarriage, 7-3 Controls, 7-4 Swing Bearing, 7-5 Hydraulic Equipment, 7-6 Implement, 7-7 Cabin, 7-8 Air Conditioner |
| Troubleshooting | 785-796 | 8-1 Non-Breakdowns, 8-2 Quick Reference Table for Troubleshooting |
| Colophon | 797-798 | |
| Appendix | 799-803 | Cabin Harness, Controller (Pump) Detailed Drawing, Controller (Engine) Detailed Drawing, Engine Harness, Harness B, Harness D |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for Hexagon head bolt (7T) Nut, Coarse screw thread, M8 × 1.25 | 16.67 to 20.95 ft·lbf (22.6 to 28.4 N·m) | p. 82 |
| Hydraulic hose length change under high pressure | +2 % to -4 % | p. 15 |
| Tightening torque for Hydraulic Fitting, Parallel pipe thread G (PF), 1/4 | 16.6 to 20.3 ft·lbf (22.6 to 27.5 N·m) | p. 83 |
| Suction filter filtration accuracy | 105 μ | p. 27 |
| Return filter filtration accuracy | 10 μ | p. 27 |
| Fuel filter filtration area | 2000 sq.cm | p. 29 |
| Oil/water separator type | Float type | p. 29 |
| LO filter filtration area | 1160 sq.cm | p. 29 |
| Air cleaner filtration area | 1.93 sq.m | p. 30 |
| Tightening torque for Cooling water hose clip 48 | 1.8 to 2.5 ft·lbf (2.5 to 3.4 N·m) | p. 77 |
| Engine Oil Capacity | 10.5 L | p. 46 |
| Hydraulic Oil Capacity (in tank) | 60 L | p. 46 |
