Re: crank seal leaks after replacement - Saab 9000 Bulletin Board - Saabnet.com
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Re: crank seal leaks after replacement
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Posted by David Ingram [Email] (more from David Ingram) on Fri, 21 Aug 2015 03:55:00 Share Post by Email
In Reply to: crank seal leaks after replacement, rob 96 aero, Fri, 21 Aug 2015 02:24:07
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I had a Saab tech trainer tell me once that when replacing the seal, the new one should be put at a slightly different position than the original because over enough miles, the old seal will actually wear a tiny groove into the crank end. In that case the new seal may not seal well.

You were correct not to use any sealant on the seal -- it goes in dry -- but you should ensure it goes in perfectly parallel to the crank. If it's not seated correctly (not parallel) it can also produce a leak.

Finally, although the outside of the seal should be installed dry, you should be sure the inside of the seal is packed with vaseline so that the seal is lubricated on initial startup. If not, the seal can get damaged by the lack of oil until things get pumping after the repair. Be sure the vaseline is free of any grit, as you don't want that to get sucked into the oil pump.

You probably followed all the above steps already, but maybe the positioning part of things would help.

Lastly, yes, you should always replace the oil pump cover oil ring any time it's disturbed, so that's a good plan as well.

posted by 74.65.217...

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