Part of the Yanmar Repair Manuals.
Before you crack a fitting on a ViO35-6A pilot line, you want the relief pressures and the air release procedure in front of you, not a guess. This service manual for the Yanmar ViO35-6A mini excavator (serial numbers 60501-60548 and 60549 and above, Yanmar publication 0BKB3-U00100) is the document the dealer techs work from: 686 pages covering the 3TNV88F-ESBV engine, the electric system with its ECU error code list, the full hydraulic system from pump and control valve to swing and travel motors, and step-by-step adjustment and repair for the undercarriage, swing bearing, cylinders, cabin, and air conditioner.
Service standards spell out wear limits, pressure settings, and tightening torques for machine and engine, and a troubleshooting section separates genuine faults from non-breakdowns before you start pulling parts. It is a downloadable PDF, so the pages you need today can go to the bench and get dirty while the rest stays clean on your laptop.
What's Inside This Yanmar ViO35-6A Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 9-18 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 19-45 | 2-1 Specifications, 2-2 Outline Drawing and Working Area, 2-3 Weight List of Main Parts, 2-4 Lifting Capacity List, 2-5 Specifications for Attachment |
| Service Standards | 46-75 | Machine Performance, Engine, Undercarriage (Rubber Crawler Specifications, Steel Crawler Specifications, Common Specifications of Steel & Rubber Crawlers), Controls |
| Engine | 76-244 | 4-1 Engine, 4-2 Fuel System, 4-3 Cooling System, 4-4 Lubrication System, 4-5 Starter Motor, 4-6 Alternator, 4-7 Electronic Control System, 4-8 Electric Wiring |
| Electric System | 245-275 | 5-1 Electric Equipment of Machine, 5-2 Electronic Control System, 5-3 Engine ECU (Engine Controller), 5-4 Hydraulic ECU (Controller), 5-5 Error Code List |
| Hydraulic System | 276-517 | 6-1 Outline, 6-2 Circuit Operation, 6-3 Hydraulic Pump, 6-4 Control Valve, 6-5 Pilot Valve, 6-6 Swing Motor, 6-7 Travel Motor, 6-8 Proportional Solenoid Valve |
| Adjustment and Repair | 518-672 | 7-1 Engine and Electric Equipment, 7-2 Undercarriage, 7-3 Controls, 7-4 Swing Bearing, 7-5 Hydraulic Equipment, 7-6 Work Implements, 7-7 Cabin, 7-8 Air Conditioner |
| Troubleshooting | 673-685 | 8-1 Non-Breakdowns, 8-2 Quick Reference Table for Troubleshooting |
| Appendix ViO35-6A Wiring Diagram | 686 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Idler adjust screw (M10x40) tightening torque | 32.6 to 43.4 ft·lbf (44.1 to 58.8 N·m) | p. 545 |
| Bucket cylinder bottom pin lock plate (M10x25) tightening torque | 32.6 to 43.4 ft·lbf (44.1 to 58.9 N·m) | p. 63 |
| Return filter filtration area | 708.8 (4560) sq.in. (sq.cm) | p. 24 |
| Battery fixing bolt (Nut 6) tightening torque | 1.45 to 2.17 ft·lbf (1.96 to 2.94 N·m) | p. 62 |
| Fuel Injector Pressure | 2702 - 2845 psi | p. 54 |
| Cylinder Head Bolt Tightening Torque | 63 to 67 ft·lbf | p. 69 |
| Hydraulic Fitting Torque (G(PF) 1/4) | 16.6 to 20.3 ft·lbf | p. 71 |
Yanmar ViO35-6A Common Problems This Manual Covers
One track weak or not driving
When one side crawls while the other pulls, the usual suspects are the travel motor and its circuit. The Hydraulic System section covers travel motor construction and circuit operation so you can isolate the fault instead of swapping parts on a hunch.
Manual Section: 6. Hydraulic System p. 276Error code on the monitor
A fault code stops the job cold until you know what it means. The Electric System section covers the engine ECU, hydraulic ECU, and includes the error code list to turn the number on the screen into a diagnosis.
Manual Section: 5. Electric System p. 245Engine running hot
A plugged cooler core, tired belt, or a soft coolant hose will push temperatures up long before anything fails outright. The Engine section covers the cooling system on the 3TNV88F-ESBV along with fuel, lubrication, and the electronic control system.
Manual Section: 4. Engine p. 76Loose or worn track tension
Rubber crawlers stretch and idlers wear, and a thrown track buries the morning. The Adjustment and Repair section walks through undercarriage service, and the idler adjust screw torque of 32.6 to 43.4 ft·lbf is specified in the procedure.
Manual Section: 7. Adjustment and Repair p. 518Slow, weak hydraulic functions
When the boom lifts lazily or swing drags, you need to test against real numbers. The Service Standards section gives machine performance figures and pressure adjustment procedures for the relief valves, swing brake valve, and cut-off valve.
Manual Section: 3. Service Standards p. 46Oil leaks at cylinders and fittings
Weeping rod seals and seeping fittings contaminate the machine and drain the tank a little every shift. The Adjustment and Repair section covers hydraulic equipment and work implement service, including cylinder and pin work on the boom, arm, and bucket.
Manual Section: 7. Adjustment and Repair p. 518Frequently Asked Questions
Which machines does this manual cover?
It covers the Yanmar ViO35-6A excavator, serial numbers 60501-60548 and 60549 and above, with the 3TNV88F-ESBV engine. The Technical Data section, starting on page 19, carries the specifications those serial ranges differ on. It is the factory service manual, publication 0BKB3-U00100, in English.
Does it explain the error codes on the monitor?
Yes. The Electric System section covers the engine ECU and hydraulic ECU and includes the error code list, so you can read a code from the LCD monitor and trace it to a cause. p. 245
Are torque specs and wear limits included?
Yes. The Service Standards section carries tightening torque lists for the machine, engine, general bolts, and hydraulic fittings, plus wear limits for the undercarriage, cylinders, and bucket teeth. For example, the cylinder head bolt torque is listed at 63 to 67 ft·lbf. p. 46
Does it cover the travel and swing motors?
Yes. The Hydraulic System section covers the hydraulic pump, control valve, pilot valve, swing motor, travel motor, and proportional solenoid valve, along with circuit operation for diagnosing weak travel or swing. p. 276
How will I receive this Service Manual?
Immediate download of the complete 686-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
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.
Are there wiring harness diagrams in this Yanmar ViO35-6A manual?
Yes. This manual includes the complete electrical wiring diagrams and wire routing, covering the harnesses, the LCD monitor, engine speed sensing, the cabin headlight, and the air conditioner and heater circuits.
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