Quote
The extension can be used when here is not a correct seal between the housing & the doubler input shaft because the input shaft may not be quite long enough. You may no have this problem. The extension housing comes with a seal. The seal is Timken 710058

http://www.jeep4x4center.com/teraflex-automatic-seal-extension-tf-2904400.html


Ok, now I understand. This replaces the factory seal in the A/T extension housing and seals around the transfer case input snout where it sticks into the extension housing (over the A/T output shaft).

If I understood correctly, Nathan's docs said the short nose t-case snout was needed. I can't figure out if that meant for HIS, or in general to attach to the AW4. I thought I had this figured out but I've found Jeep posts where they say the leak is because you have the wrong snout length.

I've seen a few NP231s - AFAIKT, the only thing that changes there is the snout length. There isn't a difference in the bearing/planetary plate depth. So, ...???

Edward

'97 Montero Sport LS 5-Speed 3.5L conversion
SAS Dana 44s & ARBs, 35" Yoko Geolandar M/Ts
NP231 B4R doubler/Terra Low231/RP 5.38 229:1
'99 Montero Sport Limited 4WD SAS 3-link project
'03 Montero Sport Limited AWD
'97 Montero Sport LS 5-Speed 4WD