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Oil leak on 2N

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Barn Boy

04-07-2000 05:55:57




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I have an oil leak that appears to be coming from the rear main crank seals. It leaks mostly after I have been working the old girl. The leak appears to be comming from the casing were the cotter pin is seated by the clutch. I think it is possibly the rope seals ? I was told that the engine had been rebuilt by the person I bought it from but only wounder if he did not replace everything he needed. My question is how hard is it to replace the rear seals and do I need to split the tractor or can I do it by dropping the oil pan only ?? Onthe think, I am using 10w 40 detergent type oil. Would this cause the leak?

Thanks for you help.

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ZANE

04-07-2000 16:14:00




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 Re: Oil leak on 2N in reply to Barn Boy, 04-07-2000 05:55:57  
To replace the top rear main seal it next to impossible to remove the old one or install the new one with the crankshaft in the engine. The old one will be stuck to the seal retainer because it is aluminum and you know what that stuff does when it is mated to a dissimilar material for a long time. You may also have too much wear on the crankshaft rear journal to ever stop the leak without an engine rebuild and crank regrind.
There is however a way to repair the rear main seal without removing or replacing it.
The TO Ferguson tractors have a cotton roping seal at the top rear main seal. It is a soft loosely woven rope about the size of a pencil or so and it is installed by simply using a soft punch to pack it into the top seal retainer. First you use the soft punch to pack the old seal up into the retainer as far as is possible before starting to pack in the roping. Using a soft punch made of a welding rod etc and being careful not to strike the crankshaft and score it pack the cotton roping into the seal retainer behind the old seal until no more can be packed in. Do this on both sides of the top seal.This will make the old portion of the seal again come in contact with the sealing surface of the crankshaft and then just install a new half in the bottom and bolt on the bearing cap.
I have done this repair many times in the past and never had a leak. The cotton roping is all that the new TO Ferguson tractors ever had from the factory. The engine in them is a Contenintal engine.

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Lyle

04-07-2000 14:51:44




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 Re: Oil leak on 2N in reply to Barn Boy, 04-07-2000 05:55:57  
I just replaced both front and rear main seals in my 2N. I had the tractor split because I replaced the clutch because of the rear main seal leaking. You won't have to split the tractor but you will have to remove the front steering axle because the axle housing bolts through the front of the oil pan. You can replace the seals by loosening the main bearing caps and forcing the crank down a bit. They tell you to soak the seal for 2 hours in oil. I think it would be better if you don't. 30w oil would be better for your tractor. Good luck

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