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Farmall & IHC Tractors Discussion Forum
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Tranny oil mixed with water

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Scott Rukke

10-11-2007 13:17:23




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I have some water mixed in the tranny oil in my H. How easy is it for water to get into the case when the tractor sits outside all the time. I plan on draining and refilling but wonder if I need thread sealer on the top plate bolts and the large fill plug??




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Doc Larry

10-12-2007 06:02:33




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 Re: Tranny oil mixed with water in reply to Scott Rukke, 10-11-2007 13:17:23  
It's takes a long time to build up enough water from condensation to cause any problem. The reason is that air doesn't move in and out of the tranny to any significant degree. When the air cools down, a tiny bit of moisture can condense on the inside of the case, but when it warms back up, it evaporates again. Most of the time you won't get enough condensation for the water to run down into the transmission luid where it will be trapped You would need to keep bringing moist air into the tranny to create the problem you're describing, and that just doesn't happen. You're getting rain water in the tranny.
I'm firmly convinced tractors are a lot better off kept in a shed or garage.
Larry

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Roger46

10-11-2007 19:25:52




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 Re: Tranny oil mixed with water in reply to Scott Rukke, 10-11-2007 13:17:23  
I also believe that the water in the transmission mostly comes from condensation. My tractors never see a rain as they are always inside and I get water in the transmission. This is a hazard of cold climate where the outside temperature drastically changes from cold to hot and every thick piece of metal sweats inside and outside of the tractor. I can't see how water gets through the bolts in the platform as the gasket goes all the way around the bolts. Some water may come in through the shifter, but I think more is condensation. I remember some years back working on my dad's Farmall H that he used for feeding the cattle on a daily basis. When we took the transmission cover off one winter; because of some problem the transmission fluid was like a snow cone and he never left the tractor outside. Roger

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NDS

10-12-2007 05:41:04




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 Re: Tranny oil mixed with water in reply to Roger46, 10-11-2007 19:25:52  
In cold climtes you are probaly right about condensation but in South gear lube will look like new after several years if tractors are kept out of rain. My A will have milky fluid in a few months if left outside but I now keep it in shed and lube looks like if did when changed probaly 10 years ago.



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Haas

10-11-2007 18:20:45




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 Re: Tranny oil mixed with water in reply to Scott Rukke, 10-11-2007 13:17:23  
Some say the water gets in through the bolts or the shifter hole. However, I believe most of it is condensation. When the tractor gets cold in the winter and then a warm spell comes, it will sweat like a glass of iced tea in the summer. Whatever it is, if you work the tractor pretty hard now and then after you get the big batch out by draining, the transmission will get hot and the water will evaporate away. Problem is most of these old tractors don't work much. Also be aware, that if you have water in the transmission, there is also some in the belt pulley gear box. The only way to get that out is to loosen the flange that holds the pulley shaft in place and pull the assembly out and let it drain.

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the tractor vet

10-11-2007 15:45:17




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 Re: Tranny oil mixed with water in reply to Scott Rukke, 10-11-2007 13:17:23  
Runs down the shifter and believe me it will put a bunch down in the trans. and rear end ANd that reminds me that i need to drain my S/H as it probably has ten gallon of water in it. AGAIN.



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Janicholson

10-11-2007 13:22:17




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 Re: Tranny oil mixed with water in reply to Scott Rukke, 10-11-2007 13:17:23  
Most opinions focus on condensation and the constant breathing of the trans bringing in air with moisture. The only way that seems functional is to heat the oil externally to drive moisture out of it (carefully to avoid fires) or to heat the oil internally with a plug in heater, or other method. Some claim success with copper gaskets under bolt heads, but the jury is still out. JimN



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