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Transmission Rear Oil Seal Drama


pierre02ti

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Spent ±6 hours to replace the real oil seal of my tranny, because it was leaking, and it it now leaking as much if not more than before.  Help.

 

Tranny is used and installed two years ago.  It  is from 1972, according to casting number.

 

Yes I should have replaced the seal before installing it but it looked so dry....

 

Replaced seal with same as was in there: 40x55x8, knowing that an other one, 38x55x10 is available for early tranmissions.

 

What could be wrong?

 

Pierre

69ti

 

 

Pierre

69 02ti

91 318is

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The output yoke could be worn in that spot so it wont seal. You could have a bad selector shaft seal. Or you could of torn the new seal. I've done it before...

-Nathan
'76 2002 in Malaga (110k Original, 2nd Owner, sat for 20 years and now a toy)
'86 Chevy K20 (6.2 Turbo Diesel build) & '46 Chevy 2 Ton Dump Truck
'74 Suzuki TS185, '68 BSA A65 Lightning (garage find), '74 BMW R90S US Spec #2

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If you end up changing the seal, fit the seal on the output flange before the seal is installed to verify the fit and the correct seal purchased. A pre-installstion check is just good SOP with any seal.

Edited by jimk

A radiator shop is a good place to take a leak.

 

I have no idea what I'm doing but I know I'm really good at it.

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This board is not accepting an edit, tried 3 times so here is what I had to say.

 

A pre-installstion check is just good SOP with any seal.

A radiator shop is a good place to take a leak.

 

I have no idea what I'm doing but I know I'm really good at it.

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The output shaft seal should be recessed about 2-3mm per the Blue book.  It might rub against the output shaft yoke if installed flush with the bolt-on end cap.

 

Try to wiggle the (2) terminals of the reverse light switch. If they are loose, then that is a sign of possible leakage from the switch.

 

How old is your shift shaft seal?

Jim Gerock

 

Riviera 69 2002 built 5/30/69 "Oscar"

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