Americas Check your transfer case for leaks

DMarchand said:

I noticed a fluid leak last night while installing skid plates. Fluid had collected on the cooler lines leading to/from the transfer case... Couldn't find fluid above the soft part of the line, leads me to believe a problem with the line itself?

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PNW_IG said:

I thought it was a bad line as well but dealer said it was not. Another person here shared a picture that looked like mine and it was an output shaft seal. Here is a picture of what mine looked like. Any chance your rig is 8/23 build date?
View attachment 7854598

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DMarchand said:

Thanks, will do. How do you locate the build date?

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PNW_IG said:

Of course, no problem. Build date is on a sticker on the driver's door sill.

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DMarchand said:

9/23 build. Does look like the TC is wet at the base where the drain plug is.

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Catpaw4x4 said:

Hello All,
Well I’m at my mechanic with a task list of items today along with check for leaking transfer case and unfortunately I’ve joined the Club. So question at hand for the moment -
1. I found the fluids reference sheet under resources but no official brand listed - anyone know the brand?
2. Where do we check for the fluid level (feel that I have read this at one point)?
3. My Discovery has a leaking transfer case that is a traditional proper British leak so she is simply checked whenever in the shop and topped up if needed. But she is 28 yrs old. This vehicle is <5 months. So does a leak mean immediate replacement? Wait till 10k service (she is at 5600)? Other? I’m 5 hrs away from ineos repair. This part is not BMW.
4. Any other thoughts/ suggestions welcome.
Thank you to everyone on this Forum!!

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300chris said:

I had the same leak. It was the front output shaft seal. Has been fixed, and totally dry ever since. Think Tremec had a bad batch of seals (mine was ~august build date)

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dreamalaska said:

Tremec is the Mexico City based transfer case supplier. I didn’t know that they bought a portion of Borg-Warner’s transmission division. “TREMEC purchased BorgWarner’s North American manual transmission business sector in 1996”.

https://www.tremec.com/noticias_detalle/ineos-grenadier/

https://tremec.com/noticias_detalle/where-it-all-started/

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