BizarroStormy Posted January 31, 2021 Posted January 31, 2021 So it looks like the seal between the back of my transmission and my transfer case is leaking pretty badly. Usually leaves a dinner plate sized pool of ATF on the floor over night. How hard is it to replace that seal? Will I have to drop the transmission? If I have to drop the transmission should I have it rebuilt (223k miles), seems to shift fine when it has the proper amount of ATF.
jdog Posted January 31, 2021 Posted January 31, 2021 I believe you can just drop the tcase to change out the gasket
Dzimm Posted January 31, 2021 Posted January 31, 2021 Just need to remove the driveshaft and drop the transfer case. No need to rebuild the trans if all is working. At most drain and refill with new fluid.
mjeff87 Posted January 31, 2021 Posted January 31, 2021 I don't believe the AW4 has a weep hole drilled in the rear flange (to let you know that inner seal is bad, unlike the manual transmissions). Not saying yours might not be bad, but I'd do a little looking to see where the leak might be coming from otherwise. It doesn't help that the crossmember and trans mount are right there in that area, making it difficult to actually find the source. Both the transmission and TC use ATF (but don't share), so it really could be either one. If you're leaking that bad, check the fluid level in both....that might give a quick clue where to start looking.
BizarroStormy Posted February 1, 2021 Author Posted February 1, 2021 I'm relatively sure it is the transmission, it was about 3 quarts low when I noticed it starting to shift poorly. After adding more fluid it leaked a lot more.
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now