Topic: Transmision leak

[jcsanders79]

I have had transmision (auto) leak for a while and fixed it once by retorching the bolts but its keep coming back.  I know that these are notorius for leaking.  Should I use a rubber gasket, RTV or a crappy cork gasket, it currently has a cork gasket and has been leaking since I got the tranny rebuilt?  The filter came with a rubber gasket and I am considering using that, anyone have any experience with this?

[oldjeep]

I always use Permatex Ultra Black.  Seems to make up for the inconsistancies in the pan better that a gasket.  Tranny pan bolts don't take much torque, so if you have re-tightened them you may have also deformed the pan flange.  Make sure to put it on a flat surface to check it and pound the flange flat if neccessary.

[jcsanders79]

Yeah, I think it is like 10 foot lbs, but I know that the cork gasket is not worth a  and retorqueing was just a quick fix but I was carefull to not over torcque.  How much difference is there between the ultra black and the ultra blue, I have lots of the ultra blue that I use for diff gaskets and it says that it is ok for transmission pans?

[oldjeep]

Blue should be fine, I had to look it up to even see what the difference is.  Looks like the black is more oil resistant but either should work.

[Elyod]

The black works really well.  My bike was leaking a good amount even with a new rubber gasked so i put the permatex in and it stopped it immediately and hasn't leaked since.  Going on 2 years.

[jcsanders79]

I have changed out my auto transmission gasket but was wondering if the TJ has a transmission cooler that I need to flush?  I know that there are lines running to the radiator but not sure if it has transmission fluid in in it?

[Sidscan]

jcsanders79,

Your cooler lines do flow through the radiator for cooling. 

I have a leak in my 97 auto trans.  I kept thinking it was the gasket or the lines after I had them flushed.  The weird thing is though it leaks when I let it sit for a day or two.  Well after exhaustive searching I found the problem.  The seal on the shifter is leaking.  After talking with a couple of trans experts the consensus is that once the trans fluid has a chance to cool and go back into the pan it puts pressure on the worn out seal and pushes through.  You have to drop the pan to replace it.  I am hoping to get another flush and have it fixed in the the summer.