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Replacing front pump seal on TH350 Transmission

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Posts: 19
Joined: Sat Mar 24, 2012 7:36 am

Replacing front pump seal on TH350 Transmission

Postby onespeedyrc on Wed Apr 25, 2012 4:59 pm

How much of a pain is it to replace the front seals on the a TH350 Transmission? Dropping it shouldn't be a problem, I just wonder what can of worms I'd be getting into. From the diagrams I have it looks like there is a seal behind the torque converter in the center of the pump housing, and a larger one on the pump housing. Looks like this just unbolts and slides out or is there more to it? Seems that since this car sat for 3+ years in storage, more and more leaks are cropping up. I'm going to replace the fluid and filter, any other seals or gaskets that I should look at since the trans will be out of the car? Change modulator or any other parts? Any advise is greatly appreciated!

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Joined: Mon Apr 16, 2012 8:44 pm

Re: Replacing front pump seal on TH350 Transmission

Postby Billys88SS on Wed Apr 25, 2012 7:52 pm

I would do the front and rear tranny well as checking your rear main oil seal while the tranny is out.

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