I think there's an o-ring on the shaft you managed to foul up.. I've seen it done a few times. Possibly you bought a remanufactured shaft that was assembled wrong and it wasn't your fault. I would assume that if you were able to get everything plugged in and tightened correctly that you did have it in far enough. It looks like the only thing you can do is pull it off and find out what happened. Make sure you get a very clear leak as soon as you can of exactly where its coming from. It may come down to you comparing what you put on with another brand new part (at the store) just to make sure it was assembled together. Might just be a missing o-ring, or you may have destroyed it fighting with the shaft. Either way, not a huge deal except for a pain in the dupa.

Answered by ProAutoTech (expert)
307 answers provided

Thanks a mill for ur reply. ye it was the correct shaft I compared before I bought it.before I inserted the new shaft there was a circular spring like washer inside the transmission I wasn't sure where it came from so I slipped it on on over the new shaft before I inserted it into the transmission cud this be the cause?

Response from Austin282012
1 question asked

yes, I think that came off the old shaft, so you prob doubled up.

Answered by ProAutoTech (expert)
307 answers provided