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Tractor Talk Discussion Forum

Milky hydraulic oil...

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Lance in Brenha

09-23-2003 11:59:23




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I've replaced my hydraulic oil in my Long 460 but it's still a little milky. How do I flush out that remaining moisture before I refill again. I've heard that you add diesel or kerosene and run before you drain, any suggestions? Thanks, Lance.




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Indydirtfarmer

09-24-2003 09:50:52




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 Re: Milky hydraulic oil... in reply to Lance in Brenham, 09-23-2003 11:59:23  
I've "washed out" dozens of tractors with diesel fuel. It doesn't "absorb" the moisture, but will suspend it in the diesel, and flush it out as it is drained. Diesel is a lubricant. Granted you wouldn't want to go plow the south 40 with it in the tranny, but it won't hurt a thing to fill the rearend, and SLOWLY drive it up and down the driveway for a few minutes, WITHOUT A LOAD on the tractor. I don't operate pto clutch's, or hydraulic lift's. Leave the 3pt. hitch in the DOWN position. When you drain it, let it drip dry for a while. Then re-fill with the proper oil. The diesel you drain out, will be OK for washing greasey parts, provided it's not too dirty. I'm not all that familiar with Long tractors. If it has filter(s) on the hydraulic system, change them before re-filling. That will let you start off with things as clean as possible.

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Frank Kovarick

09-27-2003 00:16:42




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 Re: Re: Milky hydraulic oil... in reply to Indydirtfarmer, 09-24-2003 09:50:52  
I had the same problem on a Ford 4000 and replaced the fluid. But I took the lines off the steering cylinders and pumped the old fluid out of those two by taking the tie rod end off the bell cranks and pushed the cylinders closed and opened. Then, I let the lines drain out.



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Larry

09-23-2003 19:12:02




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 Re: Milky hydraulic oil... in reply to Lance in Brenham, 09-23-2003 11:59:23  
If it's just a "little milky", probably won't hurt a thing. I dont like to use anything like diesel fuel because it just washes all the bearings clean of oil. Even with the newer oils, the water, if significant, will seperate and settle to the bottom. If you can, let the tractor sit for 4 or 5 days, make sure that it is tilted toward the drain plug, then just crack the drain plug 'til some fluid starts coming out. If you get more than a cup of water, change the oil and filters. The main thing is to keep the water out. Water loves to sneak in around gearshift and sunken top cover bolts, cover or shed it. Some condensation is always present, but operating the tractor enough to warm the trans case will normally evaporate it. good luck...Larry

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Dave F.

09-24-2003 18:48:58




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 Re: Re: Milky hydraulic oil... in reply to Larry, 09-23-2003 19:12:02  
Larry's about right. Let your machine set for a while, then drain. Water seperates to bottom. Wheres the plug? on the bottom. Drained the tranny in my JD-B, it had set for about a week, probably drained about a quart of clear water then lots of gear oil.
Hope this helps.

Dave



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Ben in KY

09-23-2003 18:37:27




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 Re: Milky hydraulic oil... in reply to Lance in Brenham, 09-23-2003 11:59:23  
Not sure but I don't think diesel or kerosene will absorb any moisture. Your hydraulic iol probably had additives to absorb the moisture. It may be ok if you change it one more time.



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