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Need help installing TO 30 crankshaft rear oil seal

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Denver

09-17-2001 17:21:14




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Which side of the neoprene seal should face the engine? The side where the neoprene is attached to the race or the side that has the open edge of neoprene with a spring behind it? Thanks




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Larry in Missouri

09-19-2001 06:22:53




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 Re: Need help installing TO 30 crankshaft rear oil seal in reply to Denver, 09-17-2001 17:21:14  
Think of it this way: the oil pressure inside the engine will cause the oil to push into the open groove in the seal, pushing the flange even tighter against the crank. If you put the seal on backwards, it will go on too easily, and you can just picture the oil pushing right past it!

Larry



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Boogity TO-30

09-18-2001 07:01:35




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 Re: Need help installing TO 30 crankshaft rear oil seal in reply to Denver, 09-17-2001 17:21:14  
I agree with Bob. Typically all seals are installed with the "open" part of the neoprene toward the liquid which is to be contained. This is the side where the spring is visable but some seals do not have springs.

You may want to look at the photo of my old rear main seal at the link below. The picture shows the back of the seal. The side that goes towards the flywheel. Please don't make fun of my final color scheme.

Boogity

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Bob in CA

09-17-2001 20:35:58




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 Re: Need help installing TO 30 crankshaft rear oil seal in reply to Denver, 09-17-2001 17:21:14  
The standard in seals is that the open side of the seal, the side with the spring, goes to the side with the oil that is being sealed.
Bob



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