All 686 pages of this Yanmar ViO35-6A Service Manual PDF (OEM #0BKB3-U00100) focus on one thing: getting your excavator back to factory condition. Inside, you get full hydraulic schematics detailing circuit operations and pilot valve routing, along with complete electrical wiring diagrams for the engine ECU. Open to the troubleshooting section to quickly diagnose error codes, or flip through the massive service standards chapter for page after page of pressure adjustments and tightening torques. Lock down the bucket cylinder bottom pin plate to 32.6-43.4 ft-lbf (44.1-58.9 N-m), and set the track tensioner idler adjust screw to a matching 44.1-58.8 N-m. Stop wasting hours chasing intermittent faults without a schematic. Download this bookmarked file right to your tablet, jump straight to the correct system, and fix the machine today.
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 | Engine Speed Sensing, Cabin Headlight, Air Conditioner, Heater, Harnesses, LCD Monitor |
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
Yanmar ViO35-6A excavator loses power on one side and track drives weakly or not at all p. 545
Inspect the travel motor and track tension. Tighten the idler adjust screw to 32.6 to 43.4 ft·lbf (44.1 to 58.8 N·m) as shown on page 545. Verify hydraulic lines to the travel motor are intact before tearing down the final drive.
Manual Section: 7. Adjustment and RepairBoom and bucket functions feel sluggish and hydraulic system runs abnormally hot under normal load p. 23
Check the hydraulic oil tank level and ensure it meets the 16.4 Gals capacity listed on page 23. Drain contaminated fluid and inspect the return filter. If the 706.8 sq.in. filtration area is clogged with debris, replace the element immediately.
Manual Section: 2. Technical DataEngine temperature gauge spikes into the red zone and cooling performance drops during sustained operation p. 535
Inspect the radiator fins for blockages and test the fan belt tension. Adjust the belt to achieve a pressing force of 22.05 lbf (98.1 N) with 0.31 to 0.35 in. of slack, as detailed on page 535. Tighten loose hose clips.
Manual Section: 7. Adjustment and RepairFresh hydraulic fluid leaking visibly around control valve joints, pump fittings, and cylinder seals p. 335
Clean the affected joints and inspect the hydraulic pump shaft oil seal. Measure the seal installation area wear limit, replacing the shaft if wear exceeds 0.00039 in. (0.01 mm) per page 335. Torque all 1/4 inch hydraulic fittings to 16.6 to 20.3 ft·lbf.
Manual Section: 6. Hydraulic SystemDisplay panel flickers and electrical accessories operate intermittently when tracking over rough terrain p. 62
Verify the 12 V battery connections are tight and free of corrosion. Torque the battery fixing bolt (lower side) to 1.45 to 2.17 ft·lbf as specified on page 62. Inspect the main wiring harness for chafing near the engine compartment.
Manual Section: 3. Service StandardsFrequently Asked Questions
How do I reset the monitor or alarm after an error code or hydraulic pressure alarm on a ViO35-6A?
For error codes, corrective measures often involve turning the starter switch to the "OFF" position and then the "ON" position to clear the display. For hydraulic pressure alarms, such as low engine oil pressure or high water temperature, the alarm is typically cleared by resolving the underlying issue. The manual does not specify a manual reset button for these alarms.
What is the hydraulic pressure test procedure on a ViO35-6A?
To test hydraulic pressure, first remove plug R (PT 1/8) and install an oil pressure gauge. For system relief pressure, retract the bucket cylinder to its stroke end, hold the lever, and read the gauge. For circuit relief pressure, extend or retract the cylinder to its stroke end, hold the lever, and read the gauge.
What are the pressure test port locations on a Yanmar ViO35-6A?
The pressure test ports on the Yanmar ViO35-6A are located on the hydraulic pump and are identified as P1, P2, and P3. To access them, remove plug R (PT 1/8) and install an oil pressure gauge at the specified measuring points.
What do ViO35-6A error codes mean?
The ViO35-6A error codes are detailed in the "5-5 Error Code List" table, which provides the error code, classification, a description of the error, detection conditions, potential causes, and recommended corrective measures for each specific issue. For example, error code 00.000091.00 signifies an "Accelerator sensor malfunction: above normal operating range (SAE/J943)".
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 Yanmar ViO35-6A Service Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy text. The text quality is consistently crisp and easy to read throughout. Diagrams and illustrations are raster images, which appear clear at normal viewing but show some pixelation when highly zoomed, though labels remain generally readable. Pages are clean with no notable scan artifacts, stains, or skewed content. There are no blank or filler pages present.
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