Hello again,
Well this is a little embarrassing to say the least.
After blasting all of the crud off of the diff...it turns out that it does have a removable rear cover, as well as the removable carrier . So now I'm back to wondering what diff this old P30 has .
It sounds like it has bad bearings , either pinion , or carrier bearings . Seeing as to how the rear cover can be removed , will this increase the chance of being able to repair this diff ?
It was thought that if it was an Eaton without a rear cover, it was kind of toast. Since both the front and rear can be accessed, is there a chance this diff can be saved ?
Thanks for any information. I'd really like to avoid changing the whole diff .