[AzTJ]

There are a couple of different seal designs, some larger than others and some smaller. Try going up or down a year.

And before you install another new one, take the driveshaft out, and rub a little tranny fluid on the shaft that slides into the t-case and then slide the seal over it. If its the right one it should clean the shaft and push the fluid back. Thats to make sure that the contact between the seal and shaft is right.

 

[ursandal]

There is also a bushing in the tail cone that might be bad. I think you need to take the tail section off to replace it.

Al

 

[GoHack]

Take some scotch bright, or steel wool, and remove any surface rust on the portion of the drive shaft that slides into the seal.

The rust is like sand paper, and will wear away at the seal.