AJEI

I have a 98 XJ with the AW4 and NP231.
It appears to be leaking between the transmission and extension housing, about halfway up the sides. What I need to know: Is there supposed to be fluid in the extension housing, or is there a seal on the transmission side of the output shaft to prevent this?

Thanks!

CCKen

There's a seal in the housing for the transmission output shaft, and a seal around the TC input shaft.

If one or both of these seals leak the fluid will come out of a weep hole in the bottom of the housing. You can't see the weep hole without dropping the crossmember and removing the trans mount and the exhaust isolator plate.

Odd that it would be coming from about halfway up the sides. Try cleaning everything off real good with brake cleaner and recheck the source of the leak.

AJEI

Thanks for the info, that makes sense. My actual leak is between the transmission and the extension housing, not the transfer case. I tried to change the title of my post but it wouldn't change the way it appeared in the forum. sorry for the confusion.

I have gone through the process of cleaning everything and re checking a few times now, with the same results.

Jason99

CCKen, were you able to find that gasket that goes behind extension housing? I can't find it anywhere.