So I replaced the torque converter shaft seal about 2-3 weeks ago myself and now the trans is leaking AGAIN.

Anyone ever have a seal go bad after less than a month???

Any ideas what could be wrong or what to look for???

Maybe grease up the torque converter shaft with grease???

Thanks for any help/advice.

 

What transmission are you working on. Did you inspect the pump bushing?

 

4L60E in a 2001 SS.

Where is the pump bushing located???

 

Behind the torque converter seal

 

Your pump bushing is most likely bad. Seen this SO many times with so many different transmissions.

Pull it back out, take out the pump, and install a new bushing.

 

Make sure the new Teflon bushing goes in with resistance. Drive it in to where it stops at the second ledge. If you drive it in too far, it will run into the ledge that keeps the busing from coming out and it will contract the bushing (shrink inner diameter) and not go over the torque converter hub. Before you in stall the new seal. Take a new razor blade and drag it "backwards" over the area where the seal makes contact and remove any excess paint that is left behind from the old seal. Polish with green Scotch Brite for a smooth surface. There must not be any gouges where the seal makes contact with the pump. This could cause a minor seal leak. Drive in or press in the seal evenly, until bottomed out.

 

you need to also check the hub of the torque converter.. should have a smooth mirror like finish. seals that get hard will wear a groove into the hub and extremely worn bushings will leave noticeable wear marks on the hub. also did you make sure you still had both dowels on the back of the engine that line up the trans correctly? if they came out with the trans because they were stuck, they have to be punched out from the trans and hammered back into the block first. i use a little never seize on the end going back into the trans.