Hello all, noob here. I just bought an 82 300SD, I got it for a steal because the harmonic balancer fell off on the previous owner. The engine starts and runs fine so I think it is a really easy fix. Just a coule questions. Has this ever happened to anyone, why would it? Also there is a lip around the outer edge of the area the goes into the oil seal area. it is beveled out and sharp. I don't know whether this is suposed to be there or if it is there as a result of some kind of wallowing action that occured when the pulley came off. Here is a pic to be a little clearer. Sorry for the quality, my cam lacks a macro feature.