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Case Tractors Discussion Forum
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Rear Main Seal :Leaking on VAC

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Gale Roberts

03-30-2008 13:29:12




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I have a leaking rear main bearing seal on the engine of my 1948 VAC. Is there any magic seal rejuvenator additive that might help me? How much of a job is replacing the seal? (I'm sure it is the engine seal leaking because of the color of the oil and the oil level goes down) Any help will be appreciated. Gale




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mj

04-01-2008 08:15:26




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 Re: Rear Main Seal :Leaking on VAC in reply to Bruce Hopf, 03-30-2008 13:29:12  

Uggie said: (quoted from post at 08:21:45 03/31/08) ..... ...If it is wide front tractor you have to drop the front axle to get the oil pan off because it won't slide past the oil pump..... .


You're right if it's a non-adjustable wide front. On an adjustable wide front the pan is in full view and drops right off. 8)

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Uggie

03-31-2008 07:21:45




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 Re: Rear Main Seal :Leaking on VAC in reply to Gale Roberts, 03-30-2008 13:29:12  
I have changed several rear seals and it may be a larger project than you may want. 1. Do have the space availble to split your tractor? 2. Do you have a wide front end on your tractor? 3. Did you know that you have to take the oil pan off to get the rear seal retainer off to replace the seal? 4. Did you know that the old seals were leather seals and once they dried out they damaged your crank shaft and left a groove? New seals are thinner than the old Chicago rawhide seals. Old ones are around 1/2" thick and the new one's are 1/4" thick. It does help them being thinner because it moves the seal back away from the groove a little bit. I always buy two to replace the one and I place the first one correctly and then I turn the other seal opposite. Takes up the same amount of space. Does help a little bit with leaking. Biggest thing to remember is that when everyone and everything hits 50 years old we are all worn out and leak. Probably will need new oil pan gasket or use form-a-gasket. If it is wide front tractor you have to drop the front axle to get the oil pan off because it won't slide past the oil pump. If you do try to force past you may damage the oil pump and pick up. While you are in there you might take a look at the clutch plate and flywheel to make sure it isn't totally worn out and you don't want to take a part 4 months from now. Hope this helps. It is easy checking and pouring oil into the valve cover verses what I just said.

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Den N Ms

03-30-2008 15:55:47




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 Re: Rear Main Seal :Leaking on VAC in reply to Gale Roberts, 03-30-2008 13:29:12  
Nope, there is no magic seal rejuvenator.If its leaking bad you'll have to replace the seal.If its not gettin on your clutch to bad and you just don't want the piddle puddles tie or hang a catch can under it.



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