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Changing hydraulic fluid and its milky

G

Graveyard1984

Member
I went to check hydraulic fluid and it
was milky white i know that this means
water got in there.
I drained the fluid out and was going
to change the filter. The part store
gave me the wrong filter, is it going
to hurt the system if i let it drain
and drip till i get home tomorrow
night and hopefully get the right
filter?

Thanks
 
That would probably be the best thing to do! You will probably get some better advice too. You should always state what kind of equipment your dealing with, sometimes it makes a difference.
 
exactly what u want to happen, plus a small flush. then install new filter. and what animal is this on?
 
Let it drain then fill it up with diesel run it for a little bit maybe 2 minutes but don?t operate the tractor shut it off and drain it again change the filter and put new oil in
 

Graveyard
While hyd oil is drained you also need to check/clean trans sump screen & check gear shift boots for cracks which is probably where moisture entered hyd sump. Also check to be sure breather in hyd oi filler cap isn't clogged with dirt.
 
I keep my tractors inside, so there is no possibility the moisture is caused by rain.

Where I live, conditions are such that condensation is a fact of life. Farmall sits over the winter. Every spring I change the oil in Farmall and the first thing that comes out is a spoonful of water and a little milk.

I use my terramite in winter. Hyd Oil temps get around 150-60. No worry about moisture.

If you don't use it hard in winter, good chance condensation will return.
 
(quoted from post at 09:04:06 01/16/19) I see no reason to flush with Diesel, it does nothing to absorb water.
Click to expand...

I agree. I certainly wouldn't want my new hyd oil contaminated with diesel because it will be difficult to get all diesel out of hyd system if engine is started.
 
I cannot see letting it set for a week or a month hurting. And is after refilling ans still looks milky then might have to do a second drain and refill but I would not flush with anything else but correct hydrolic oil.
 

The wet brakes and clutches are oil proof but they are not waterproof .
Changing oil and flushing is cheaper than disintegrated brake and clutch friction material.
 

Graveyard, you can and do get milky oil even if your tractor is never out in the rain. Moisture gets in through the humidity in the air, and has been ever since it was new. During its first fifteen years when it was being worked hard on a regular basis it got hot enough probably at least once a week to make the oil hot enough to drive the moisture out. Usually when this topic comes up, which it does at least once a month, after the poster changes his oil he comes back telling how the new oil has gotten milky. Well, yes of course it did, and it will continue to depending on the weather and what kind of usage it gets.
 
I would go along with flushing, but believe it needs to be done with subsequent filling and draining of same type fluid.
 
The drain plug on my Jubilee is in the center of the sump. Draining the oil still left water in from of the drain hole. I had to remove lift cover to work on it and used a rag to dry the water out.

May want to add alcohol or something to bond the water to the oil before draining. Like adding heat to gas to bond the water to the gasoline.
 
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