M38 Transmission Leak

Scott21 · Post by **Scott21** » Wed Jun 17, 2020 6:16 am

I think I am over filling my Transmission. When I fill, The level in the transmission does not drop even if I let her sit over night. Then I fill the transfer case to the fill hole. With both filled to the fill holes, I leak out the front seal after a long drive. Its not motor oil. Any input? Scott

1952 M38

Post by **wesk** » Wed Jun 17, 2020 9:18 am

A certain group of T-90/D-18 assemblies have a crossover port between their cases. These require not filling the tarnsfer/lower 8unit at all but slowly filling the Tranny/upperunit until the transfer is full then you must stop filling the tranny. Maybe someone else can confirm I have the oil going in the correct direction.

Scott21 · Post by **Scott21** » Wed Jun 17, 2020 10:42 am

Thanks Wes, I wonder how to ID that setup without removal.

Post by **wesk** » Wed Jun 17, 2020 10:58 pm

http://www.cj3a.info/tech/fluid.html

http://www.willysmjeeps.com/v2/modules. ... ic&t=11320

https://cj3b.info/Tech/T90Fluids.html

Scott21 · Post by **Scott21** » Thu Jun 18, 2020 6:02 pm

Thanks, Wes, I do have top it off disease. Sorry for the late reply, I drove 4 hours to pick up what I thought was an M101CDN that wound up being a 53 M100CDN that is in surprisingly nice shape for sitting in the woods for 30 years uncovered. Lomg day, had to dig her out.

As always, thanks for helping out.

Scott

Post by **wesk** » Thu Jun 18, 2020 8:38 pm

Still a nice find. Were you looking for an M101CDN to pull behind a M37CDN?

I have an M100 and a M101 for my M38 & M37.