foamy hydraulics in cub

rterry · Jan 29, 2011

friend of mine has a lot of foamying in his hyd. system I have not ran across this problem before pump or unit?

gurneejoe · Jan 29, 2011

The obvious would be low oil level or wrong oil. Most likely it would be caused by a leak on the suction side of the pump. A small pinhole where a line is rubbing or an o-ring eroding at a connection is all it takes.

Bob · Jan 29, 2011

Don't forget a failed pump shaft seal!

rterry · Jan 29, 2011

I was thinking oil seal in pump also thanks for the input

John M · Jan 29, 2011

Whats he using for oil? Hydraulic oil was put in mine before I got it, foamed alot and almost lost them after running for about an hour. Idrained it and put in ND 30 wt and it stopped foaming.

gene bender · Jan 29, 2011

Just replace with some hy-oil or non detergent.

rterry · Jan 29, 2011

pulled the pump off and someone else did not put right seal in plus gears were worn and floppy I had a old one to fix him up. thanks rterry

holmesw · Jan 30, 2011

It sounds most likely to me that it has detergent motor oil in it. The detergent in oil, kind of acts like dish soap, it will froth and foam, and cause your hydraulics to act very bumpy.

foamy hydraulics in cub

rterry

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