Merc-o-matic rear seal leak/master cylinder upgrade


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By lgbyblock - 18 Years Ago
I have a 55 Merc that I'm starting to work on.  I may end up using an AOD but need to leave the original tranny in for the time being.  Problem is that it hasn't been driven in many years and leaks like a sieve from the tailpiece seal.  Can that seal be replaced without taking the trans out of the car?

I also want to put a modern twin resevoir master cylinder on the car.  Anyone done so and have any suggestions/comments.

By Glen Henderson - 18 Years Ago
Yes, just pop it out. Check the front yoke for wear, if it shows signs of wear, you may need a extension houshing bushing. If so it requires a special puller and installer to replace it without removing the extension houshing. The replscement seal that you get most likely want look like the orginal equipment seal.
By lgbyblock - 18 Years Ago
Thanks, that's what I thought but wasn't sure.