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Farmall & IHC Tractors Discussion Forum
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Robertw and the H

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Michael Soldan

01-18-2006 15:58:06




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Hi Robert, I saw your question and thought I would reply on a new thread as there are other opinions about how water gets in a rear end. One of my H's had close to 4 gallons of water in it. It had sat in my garage for over a year and I decided to change the rear oil before taking it to the farm. Oil being lighter than water floats on top so all the water will be in the bottom of the rear end, pulled the plug and very clear water ran out into the pail, I let it run until oil started to come. I then drained the oil and put in new. My other H was being used a bit at the farm and when I came to change it, a carmel coloured oil emulsion ran out, pretty goopy stuff. How water gets in usually gets a discussion going. There is condensation and after years, mabey decades a quantity of water builds up. I think that there is water getting in around the shifter, even if there is a rubber gromet and I think that around the pulley housing, the sunken deck bolts and even the oil plug could all allow seepage of water. Now some will argue that there is no leakage at the deck bolts, however after 40 or 50 years there can be a lot of water in those rear ends. The other thing is that because those H's and M's were so dependable that owners stopped worrying about servicing the rear end and a lot of old farmers or farmers in olden times simply didn't change rear end oil, owned a tractor for years and then sold it to the next guy that didn't worry about it. I changed both my H's my M and my B250 and I think I was the first to do so on all of them. Tractors that are inside seem to have a lot less water problems. My M was my Dad's and it was inside every night after its days work, Dad always insisted that the tractor be "put away"...so that's where the water comes from...I'm sure there will be some more opinions which of course are welcome on this discussion board.....Mike in Exeter Ontario

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Robertw

01-19-2006 13:02:42




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 Re: Robertw and the H in reply to Michael Soldan, 01-18-2006 15:58:06  
Thanks guys vary well explained i got a farmall sh that i have owned for about 30 years and always been housed it has done vary little work in the last 25 years or so and i haven't change the rear end oil i guess i never thought about having a water problem in there i think i had better change it Thanks again Robert in mich.



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BillyinStoughton

01-19-2006 07:55:53




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 Re: Robertw and the H in reply to Michael Soldan, 01-18-2006 15:58:06  
I think you are right on all points Mike. I too have changed rear end oil on recent acquisitions, and have always found that tractors stored outside have an exponential abount of water in the rear ends, as compared to their shedded counterparts. I can buy the idea of some of the total quantity coming from condensation...I mean after all, if you have the rear end up to operating temperature and then it sits outside to cool off...let"s face it, there is nothing air tight about the deck plate, shifter, pulley box, etc.

I have often wondered about the recesses around the deck bolts being just a temporary swimming pool for water to end up in the rear end. I guess the bottom line is that 6 gallons of SAE 90 is relatively cheap. A change should always be in order. It"s good insurance and beats the alternative of major teardown and repair.

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captaink

01-19-2006 08:15:45




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 Re: Robertw and the H in reply to BillyinStoughton, 01-19-2006 07:55:53  
Don’t forget that when you park that warm tractor in the evening, as the rear end cools, the air will contract creating a vacuum. This will then draw more humid air into the rear end through any means available, raising the humidity of the air inside. If it sits long enough, and the air gets cool enough, condensation will form and you have water! Inside storage will help prevent this to a point, since the temps and humidity levels don’t fluctuate as much.

BTW, this is in addition to the other sources like water running down the shift lever into the rear end etc…

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