Working on a 55 GMC 630 with an Eaton floating rear axle/Dayton wheel setup. Mainly I'm redoing the brakes (just the hydraulic cylinders, not the shoes which are good). When reinstalling the hub/drum assembly, it does not seem to go on quite far enough (I'm talking about 1/4"). The only thing on the hub I replaced was the oil seal, and I'm quite certain it was seated fully in its bore (it's in until flush and had a different sound when seated). I reused the bearings - they are fine. I installed the hub once, thought there might be an issue, pulled it off, checked everything, and re-installed - same thing, looks like it should go on a bit farther. What I'm gauging this on is that the final lock nut lands a bit beyond the axle tube, and the drum to backing plate gap is a bit wider than the other side of the axle. The shoes were backed off all the way - no binding when the hub is spun by hand. It's possible that the seal is not slipping over the landing, but when I took it back apart, I didn't see any distortion or such. Your ideas would be much appreciated!
