Re: Water in hydraulic/transmission fluid

Posted by Hal/WA on May 17, 2007 at 23:17:01 from (66.45.175.118):

In Reply to: Water in hydraulic/transmission fluid posted by Jrry on May 17, 2007 at 10:20:12:

A few years ago, I changed all the fluids in my 641D. It sits outside and they all showed some evidence of being contaminated with water. Then last year, I started having trouble with my hydraulic system. The oil was milky, so I changed it. About a month later, it was milky again.

I needed to do some work on the PTO and decided to drain the rear end oil before removing the PTO shaft. About the first quart of liquid that drained out was water, and the oil was very contaminated. It also appeared to be quite overfull with the added water. I replaced the oil and now keep the top cover covered with canvas, since it had to be rain water getting in the rear end case and the only logical place I could see that it could be doing that is around the spring. No more problems with the hydraulic oil getting milky and I hope the water in the rear end lube didn't do too much damage in that area.

If you retain the milky hydraulic oil in a can, eventually the water mostly settles out to the bottom of the can. I reuse the hydraulic oil after the water settles out. One pretty good way of keeping the water in the settling container is to let it freeze and then to pour the oil into another container, leaving the ice behind.

If you continue to have contamination, you might want to check the rear end. Apparently the seals between the 3 compartments aren't the best, at least on my tractor. Good luck!

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