2120 Cavitating

[wdchyd]

Scott,

If you see foamy/milky oil the problem is like you said "air entrainment" and it gets sucked in from an N/G or loose suction line/tubing, or it could be a leaky shaft seal on the pump......clogged suction strainer/filter or oil too thick will compound this condition.....

Best to check all connections and glob grease on the shaft seal if it's out in the open.....

It's rare to have the cyls introduce air as it would need an overrunning load to create suction to have this happen.....

I'd double/triple check all suction connections/piping/hose before proceeding....:thumbsup:

 

[wdchyd]

And of course, (don't want to wear it out but) a flow/test meter will show quite quickly if it's air entrainment...the needle would jump and dance .....

Kubota Flow/Load Meter Test - Tractor Videos - Kubota, John Deere, New Holland and More

Bill

 

[shaley]

I'd unscrew the hydraulic filter and check the O-ring. The filter is vertical on that machine so it shouldn't spill much oil. Check the piece of flex hose and band clamps just before the filter as well.