1931 Plymouth PA real oil seal transmission

I just completed rebuilding from the block back on my 31 PA. Pulled the bell housing and installed a new bushing at the clutch fork, NOS pressure plate, clutch plate, throwout bearing, media blasted everything, and painted everything. Along the way I did replace the rear engine seal with a modern neoprene seal.

Previously I rebuilt the rear pinion seal and media blasted the drive shaft.

Looking below she looks like a new car.

Now for the question:

I took her out for a test drive and the both the engine seal and rear seal are tight, no leaks. I did find gear oil leaking from the rear of the transmission just before the parking brake housing. I’m aware an oil seal exist at the rear of the transmission but am asking for some info on how to get to it?

Does anyone have experience with this seal? Do I need to pull the transmission, parking brake housing, or can the work be done with the floor boards removed and the car on jacks? The books I have on her simply say rear oil seal with no direction for remove and replace.

Thank you, Patrick

I am not to sure there are seals in the transmission. I believe you should use 600 wt gear oil as does my 29 Dodge Brothers.

I posted this answer where I first saw the question in the "Technical" section of the forum, but since some other '31 Pymouth owners may want to know...

"If you are talking about this seal, you will have to remove the assembly from the transmission....I got the seal at my local transmission shop. Your '31 Plymouth part should be the same as my 1931 Dodge Brothers part, I believe."

Sorry for the delay. Vacation with the wife took time away from my project! I did get it done. It was actually fairly simple. Pulled the drive shaft, removed the parking brake drum, and the seal was attached with three bolts. I found the shaft on the brake drum inside had pitted very bad over time. After media blasting all parts I machined the shaft, installed a speedie sleeve and a new modern seal. Reassembled and its as good as new! Here are a few pictures for future reference: