Yes Bob that was my first thought !
Originally Posted By: footballubet
99.9% of pinion seal leaks are the pinion seal itself. Think how old the seal is...40+ years maybe. I would not be afraid to install a new seal and clean up the surface on the pinion. I'd hate for you to tear into a complete rebuild for a $10 seal. While you are there you should remover the cover and replace all the fluid at least. Then re-evaluate if you think a rebuild is necessary. You won't be out that much.
Just my opinion on the pinion!
You're right Scott, that is what I plan to do. Check the gears, check if play exists in the pinion flange, then refill the axle with new fluid. Btw I don't know how old is the fluid and I guess the seal is 40+ years...
Thank you all for your input !