32RH Leak at rear trans seal

Klye

New Member
Joined
Feb 7, 2024
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5
Location
Seattle, Wa
Hi all,

'99 TJ Sport 4L
32RH 3 spd w/ deep pan
Allegedly the previous owner had a shop rebuild the trans

I've replaced the rear seal on my 32RH adapter housing with a Teraflex extended seal. I noticed that the wall where the seal sits is marred up from the previous "mechanic", I smoothed those out to the touch before pounding in the extended seal. While in there I replaced the T-Case input shaft seal too. The T-Case should be original to the Jeep, its an NP231J. The input shaft on the T-Case is the longer version.

I can see that the trans is still leaking through the weep hole on the adapter housing. I'm wondering what else this could be and what my options are? There's a bearing within the adapter housing just behind the seal, woudl that contribute to the leak? Or should I look for a new adapter housing all together? Also, I didnt use RTV between the T-Case and the the Trans adapter housing.

I've been monitoring Trans and T-Case fluids over time, T-Case stays at a good constant level. The trans usually needs topping off after a few days of driving. One thing to note, the trans trans dip stick isnt stock. May be possible that the dip stick gives an incorrect reading, it could actually be at the max level or overfilled slightly even though fluid is at the "OK" mark.

Any tips and links to parts would be greatly appreciated. I've put a ton of work into this thing though this is the last of the major repairs.

Thank you!
Kyle
 
I had the same leak after swapping in my 32rh and installing a seal extension. I fixed it by removing the extension and reinstalled it with RTV. No leaks since.
 
I had the same leak after swapping in my 32rh and installing a seal extension. I fixed it by removing the extension and reinstalled it with RTV. No leaks since.

Thanks for chiming in!

Any tips on pulling that thing out?
 
Thanks for chiming in!

Any tips on pulling that thing out?

Take the transmission housing extension off, remove the bearing inside and hammer the seal extension out from the inside. Take note which way the bearing faces when you remove it and put it back in same way. Not sure that matters but I didn’t want to chance it being wrong.
Also be sure to let the RTV cure before refilling the tranny with fluid.
 
Last edited:
Take the transmission housing extension off, remove the bearing inside and hammer the seal extension out from the inside. Take note which way the bearing faces when you remove it and put it back in same way. Not sure that matters but I didn’t want to chance it being wrong.
Also be sure to let the RTV cure before refilling the tranny with fluid.

Great tips, thank you so much! Got a buddy with a 2 ton press that should come in handy.

Last questions!
- Did you press/hammer into the rear of the extension housing to remove the bearing?

- Did you have to wet the extension housing gasket with ATF before installing?
 
- Did you press/hammer into the rear of the extension housing to remove the bearing?
The bearing is not a press fit, I removed mine by hand.
Did you have to wet the extension housing gasket with ATF before installing?
Clean and dry the trans housing extension and the seal extension and then apply RTV to the mating surfaces. Hammer the seal extension into the housing extension taking care to tap in as straight as possible. Remove any RTV that globs up and let it cure (24hrs). Reinstall the trans housing extension then place the output seal into the seal extension. I put a little fluid on the rubber part of the seal only when I installed it.
 
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The bearing is not a press fit, I removed mine by hand.

Clean and dry the trans housing extension and the seal extension and then apply RTV to the mating surfaces. Hammer the seal extension into the housing extension taking care to tap in as straight as possible. Remove any RTV that globs up and let it cure (24hrs). Reinstall the trans housing extension then place the output seal into the seal extension. I put a little fluid on the rubber part of the seal only when I installed it.

Thanks again! I'll give it a shot this week or next and see what we get. Much appreciated!
 
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