Mechanics

WHAT IS CAUSING THE REAR SEAL IN MY TRANSMISSION TO KEEP BREAKING?

1981 Oldsmobile Regency • 200,000 miles

I had the transmission rebuilt, the drive shaft rebuilt and a new yoke installed to prevent excessive movement from breaking the rear seal. A few days later, the rear seal is broken again and the transmission is leaking. What is causing the rear seal to keep breaking?
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Tonymilln
March 15, 2012.



Tranny mount, or out of balance driveshaft.

Merlin2021
Mar 15, 2012.


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