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ironmike, ASE Master tech
Category: Chevy
Satisfied Customers: 3385
Experience:  30 years ASE Master L1 GM certified
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How do i change the rear seal in my th350 transmission

Resolved Question:

how do i change the rear seal in my th350 transmission
Submitted: 7 years ago.
Category: Chevy
Expert:  ironmike replied 7 years ago.


between the trans and the transfer case there is a double lip seal(on transfer case), did you replace that? I have seen these seals leak trans fluid to the transfer case and over flow them.

Customer: replied 7 years ago.
yes! double lip seal was replaced.
Expert:  ironmike replied 7 years ago.
no leak before the transfer case repair? did you check for cracks?
Customer: replied 7 years ago.
no leaks before repair, and yes i checked for cracks. what i will do is loosen the retaining bolts install washers where needed and retorque.
Expert:  ironmike replied 7 years ago.
good idea. Otherwise I would be pulling it down again hoping to find some dirt or a cracked/torn gasket.
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