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Front crank seal leak

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Old 06-09-2005, 05:34 PM
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Car: GTA
Engine: L98
Transmission: 700R4
Front crank seal leak

Whats involved in replacing the front crank seal, I seem to have developed a small leak there? I know the harmonic balancer needs to come off, anything else?
Old 06-09-2005, 08:33 PM
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Assuming you are talking about a 1988 engine, the front crank seal is actually part of the oil pan gasket. You would have to figure out a way to drop the oil pan by raising the engine a little bit and replace the whole gasket. I've never done it, but I don't think you need to take the balancer off. Just take off the oil pan, somehow line up the new gasket, and put the pan back on.
Old 06-09-2005, 08:45 PM
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actually if your talking about the seal that seals around the balancer you done need to remove the oil pan. Just pull off the balancer and timing cover and put a new seal on and make sure your balancer surfaces is free of burrs and smooth. They make sleeve kits to fix a messed up balancer surface if you have that problem. You can get the timing cover back in without taking the pan off but its not easy with a 1 piece seal. Hope that helps
Old 06-09-2005, 11:15 PM
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
you can replace the front seal without pulling the timing cover, just the belt, lower pully, & balancer.
go slow & be gentle going back in with the new seal & it should be fine.

like 88IROCZ350 said, make sure the balancer is good, if it has much of a groove cut into it, it needs a shaft saver.
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