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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Oliver Super 44 Rear Seal

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tallfarmboy

12-11-2005 13:58:35




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Howdy all, sad story here. I"ve got a student who has worked hard for the last year to get his grandfather"s Super 44 Oliver running. Got everything back together and were turning the motor over by hand to get the oil pressure up before cranking. Well, the rear seal or something in that vicinity is leaking oil VERY badly. There"s a nice stream of oil coming out while we are turning it over. If anyone is familiar with the assembly of the rear main seal on an F400 Continental, and you could give a little insight on how to put it back together CORRECTLY, PLEASE help us out.

FYI, the top portion of the rear seal is a semicircle that contains a "rope" seal that snugs against the crankshaft. The semicircle gets installed into the block by sliding it into a circular groove and tapping it in with a hammer. We haven"t started disassembling again, but I"m thinking we need to use some RTV somewhere in there to seal things up. Hopefully we can find the leak. Anyone with any insight on how the rear seal should work, PLEASE let us know.

Thanks in advance,
Jared Jeffries
Jasper, MO FFA Advisor

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Tallfarmboy, with update!

12-13-2005 18:09:04




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-11-2005 13:58:35  
We got the motor pulled today, we are missing a plug on the backside of the block at the end of the camshaft. Is that a pipe threaded plug or a bolt? I think the machine shop may have taken it out when they machined the block, but I don't know. If you could let me know what that plug is supposed to be, thanks!

Jared Jeffries



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Kruse

12-12-2005 16:03:20




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-11-2005 13:58:35  
For the record, I"ve never had an engine apart from a 44. However, a few years ago, I worked for a company that had about 20 old Clark forklifts that had the Continental engine. (From the mid-fifties) I know exactly what you are talking about when you describe that rear seal. That job gave me nightmares.....
Anyway, my suggestion is to pull the engine and THEN turn it by hand to see where the leak is coming from. That rear seals on those engines are a very P*SS-POOR design. My guess is that the seal is okay, but a plug or bolt is missing.

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90%ret'd

12-12-2005 04:19:19




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-11-2005 13:58:35  
Even if the seal is bad you shoulden't get a stream of oil from it. Sounds more like a welsh plug at the camshaft or a plug from an oil gallery leaking at the rear of the block. Those seals were the same on the F124-F140-F162-F226 series Continential engines and usualy didn't cause many problems when I worked on them.



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tallfarmboy

12-12-2005 06:20:54




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 Re: Oliver Super 44 Rear Seal in reply to 90%ret'd, 12-12-2005 04:19:19  
Thanks for the suggestions, I'll update the situation after we get the motor pulled again.
We're going to start today, hopefully.
Jared



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90%ret'd

12-12-2005 07:18:38




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-12-2005 06:20:54  
Forgot, don't trim the ends of the seals or the cork strips on the oil pan. they look too long but best to use them as they come out of the box.
Good luck, 90%ret'd



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tallfarmboy

12-12-2005 08:18:58




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 Re: Oliver Super 44 Rear Seal in reply to 90%ret'd, 12-12-2005 07:18:38  
How do you use the seal without trimming it a little?? We trimmed at least an inch from each end, where would you stuff the extra rope if you didn't trim it?? I think I might have found someone to give me another rope seal if that ends up to be where this one is leaking. Thanks for the ideas, keep them coming!!

It is greatly appreciated...

Jared Jeffries



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90%ret'd

12-13-2005 16:47:37




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-12-2005 08:18:58  
Been 40 years so I suppose the current repair seals are not the same as they were then.
I still believe you will find something other than the seal if it leaks at cranking speed. Hope you find the problem and let us know so we can get a little more knowledge.



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Super 55

12-11-2005 19:49:26




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 Re: Oliver Super 44 Rear Seal in reply to tallfarmboy, 12-11-2005 13:58:35  
Try going to this site and emailing Ollie Schafer. I think he may have some information for you. Good luck.



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