Concern | Cause | Correction

[ngg src=”galleries” ids=”2″ display=”basic_thumbnail” thumbnail_crop=”0″]Concern: Yanmar Excavator leaking hydraulic fluid.

Cause: Elbows installed at the factory on control valves and swivel joints may have clearance slightly too large for the attached o-rings. O-rings can protrude from the control valve and swivel joint elbows. This can cause hydraulic fluid to leak from
the end of the elbow.

Yanmar-elbows-defective — Image credit: Yanmar

Correction: Factory-trained technicians will need to identify the location of the hydraulic fluid leak, replace the elbows with the updated kit and the accompanying o-rings.

[ngg src=”galleries” ids=”3″ display=”basic_imagebrowser”]Units affected: ViO35, ViO50, & ViO55

Affected Models & Serial Number Range
Excavator Models ViO35-6A with Serial Numbers AJ751 through AK534, ViO50-6A with serial numbers 60930 through 61175, & ViO55-6A with Serial Numbers
AG351 through AG748.

Bulletin Number: YATB2019–008–C

Notes:
The Yanmar dealer will need to replace all possibly affected elbows, not only the leaking ones.
Contact your authorized Yanmar dealer for repairs.
The Yanmar Dealer will not replace parts on machines that are not experiencing leakage.

All the brand names, product names, and trademarks are the property of their respective owners. Contact your authorized repair dealer for repairs.

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Tagged Colton, Colton California, Construction, Control Valve, Elbow Leak, Equipment, Excavator, Excavators, Heavy Equipment, Heavy Equipment repair, Hydraulic fluid, Leaking Fluid, Leaking Hydraulic fluid, PIP, Product Improvement Program, Riverside, San Bernardino, Service Bulletin, SoCal, Swivel Joint, ViO35, ViO50, ViO55, Yanmar, YATB2019–008–C

Yanmar Excavator leaking Hydraulic fluid – Bulletin Number YATB2019–008–C

Concern | Cause | Correction