There is an outer oil seal on 8-3/4" axles. it fits into the retainer plate. to change it, you need to break the bearing retainer collar, and remove the bearing, get the retainer plate and change the seal. really, at this point, you've damaged the bearing taking it off, or at minimal you broke the collar, so your looking at a new A7 bearing set (I think, A7K K for kit so you get the collar). I did this on my wagon (66 B-body rear). doesn't happen too often. if the axle end play isn't adjusted right, and the centering of the axle isn't 100% handled by the bearing, that outer seal might eat it. take it to a machine shop. or do it yourself. my friend showed me how to do it. replace the seal, make sure the lip points the correct direction.the bearing goes on next, then the collar. my friend had a long pipe that fit over the axle with a plate that the bottom with a hole to just fit over the axle dia. at the bearing.. I think we used it and a big hammer to press the bearing on, then the collar. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.