Need the factory specs for your Yanmar ViO75-A excavator? This 584-page Yanmar ViO75-A service manual PDF (OEM #0BKB3-G75000) puts the complete factory repair data in front of you: engine, hydraulic system, hydraulic components, undercarriage, and electrical circuits. Inside: hydraulic schematics with full fluid routing and pressure adjustment procedures for both piston pumps, wiring diagrams covering every machine circuit, and a troubleshooting section walking engine and hydraulic faults from symptom to fix. Step-by-step rebuild procedures cover the control valve, swing motor, travel motor, and hydraulic pump in sequence. Set each system relief valve to 3555 PSI (24.5 MPa) at 18.5 GPM (70 L/min); torque your track roller bolts to 274.9 to 296.6 ft·lbf (372.7 to 402.1 N·m). Your machine is down. Bookmarked and keyword-searchable: open it on any device and get back to digging.
What's Inside This Yanmar ViO75-A Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 11-24 | 1-1 Correct Work, 1-2 Safety Precautions, 1-3 Preparations, 1-4 Cautions for Disassembly and Reassembly, 1-5 Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 25-38 | 2-1 Specifications, 2-2 Outline Drawing and Working Area, 2-3 Weight List of Main Parts, 2-4 Lifting Capacity List |
| Service Standards | 39-60 | 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 |
| Engine | 61-140 | 4-1 General, 4-2 Troubleshooting, 4-3 Inspection and Adjustment, 4-4 Engine Body, 4-5 Lubrication System, 4-6 Cooling System, 4-7 Fuel Injection Pump / Governor, 4-8 Starting Motor |
| Hydraulic System | 141-184 | 5-1 Outline, 5-2 Hydraulic Circuit Schematic, 5-3 Circuit Operation, 5-4 Pressure Adjustment |
| Hydraulic Equipment | 185-410 | 6-1 Hydraulic Pump, 6-2 Control Valve, 6-3 Pilot Valve, 6-4 Swing Motor, 6-5 Travel Motor, 6-6 Pilot Check Valve |
| Adjustment and Repair | 411-532 | 7-1 Electric Equipment of the Machine, 7-2 Undercarriage, 7-3 Controls, 7-4 Swing Bearing, 7-5 Hydraulic Equipment, 7-6 Implement, 7-7 Cabin, 7-8 Air Conditioner |
| Periodic Inspection and Servicing | 533-536 | 8-1 List of Periodic Inspection and Servicing |
| Fuel, Lube Oil and Grease Recommended | 537-540 | Fuel, Lube Oil, Grease, Antifreeze, Hydraulic Oil, Cooling Water Mixture Ratio |
| Troubleshooting | 541-578 | 10-1 Non-Breakdowns, 10-2 Troubleshooting |
| Reference Data | 579-582 | 11-1 Specifications for Attachment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Sprocket installation bolt torque | 137.4 to 151.9 ft·lbf (186.3 to 205.9 N·m) | p. 442 |
| Track roller installation bolt torque | 274.9 to 296.6 ft·lbf (372.7 to 402.1 N·m) | p. 450 |
| System relief valve (Piston pump P1) set pressure | 3555.0 PSI (24.5 MPa) at 18.5 GPM (70 L/min) | p. 181 |
| System relief valve (Piston pump P2) set pressure | 3555.0 PSI (24.5 MPa) at 18.5 GPM (70 L/min) | p. 181 |
| Water separator cleaning interval | Every 100 hours | p. 93 |
| Suction filter type | Wire gauze | p. 30 |
| Suction filter filtration area | 338 sq.in. (2180 sq.cm) | p. 30 |
| Engine oil recommended type | SAE10W30, CD class | p. 539 |
| Engine oil capacity | 10.78 Qts. (10.2 L) | p. 539 |
| Track roller quantity (one side) | 5 pcs. | p. 31 |
| Idler quantity (one side) | 1 pcs. | p. 29 |
| Cooling water system issue | Low cooling water level, remedy: Supply | p. 93 |
Yanmar ViO75-A Common Problems This Manual Covers
Yanmar ViO75-A excavator engine runs rough, loses power under heavy load, and eventually stalls out completely. p. 93
Drain water from the fuel separator element every 100 hours as indicated on page 93. Inspect the fuel injection pressure, ensuring it holds between 3133 and 3278 PSI according to page 81. If pressure drops, replace the fuel filter element to restore steady flow.
Manual Section: Engine General TroubleshootingBoom and arm movements feel slow, weak, and fail to lift heavy loads during normal operation. p. 181
Test the piston pump P1 system relief valve set pressure. Adjust the valve to reach exactly 3555.0 PSI (24.5 MPa) at 18.5 GPM (70 L/min) as specified on page 181. Check the 15.05 Gals. hydraulic tank on page 539 for proper fluid levels.
Manual Section: Hydraulic Pump TroubleshootingRubber crawler skips over sprocket teeth, feels loose, and machine pulls heavily to one side. p. 441
Measure the rubber crawler tension adjustment H clearance. Adjust the idler position to achieve a sag of 0.8 to 1.0 in. (20 to 25 mm) using page 441. Torque the track roller installation bolts to 274.9 to 296.6 ft·lbf as detailed on page 450.
Manual Section: Adjustment and RepairHigh coolant temperature alarm sounds frequently and the engine overheats quickly during continuous digging cycles. p. 78
Inspect the thermostat and fan belt condition. Measure the fan belt tension force and adjust it to exactly 72.3 lbf. as shown on page 78. If the engine continues overheating, check page 72 for a defective thermostat kept closed and replace it immediately.
Manual Section: Engine General TroubleshootingFrequently Asked Questions
What is the hydraulic oil pressure / relief valve setting for a YANMAR ViO75-A?
For the YANMAR ViO75-A, the System relief set pressure for Piston pump P1 is 3555.0 PSI (24.5 MPa) at 18.5 GPM (70 L/min). The Circuit relief set pressure for the Boom (at rod end) (Piston pump P1) is 3981.6 PSI (27.5 MPa) at 10.6 GPM (40 L/min).
What is the torque spec for track roller bolts on a YANMAR ViO75-A?
The tightening torque for track roller bolts (M20) on a YANMAR ViO75-A is 274.9 to 296.6 ft·lbf (372.7 to 402.1 N·m). Loctite 262 or its equivalent should be applied as an adhesive.
What are the replacement specifications for Fuel/water separator element?
The fuel filter element, which includes the fuel/water separator, should be replaced every 500 hours for the YANMAR ViO75-A.
What are the replacement specifications for Hydraulic filters?
For the YANMAR ViO75-A, the suction filter should be cleaned for the first time, and the return filter should be replaced for the first time. The suction filter has a filtration accuracy of 150 Meshes, and the return filter has a filtration accuracy of 10 μ.
What do I get after purchasing this Yanmar ViO75-A manual?
A 584-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print specific sections of this Service Manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Can I find hydraulic circuit diagrams in this Yanmar ViO75-A manual?
Yes, this Yanmar ViO75-A Service Manual includes hydraulic system diagrams, circuit schematics, and component specifications.
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