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| | | | Joined: Apr 2009 Posts: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | 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!
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
| | | | | Joined: Feb 2016 Posts: 1,990 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,990 | New grease seals fit pretty snug on the spindle, do you have a new seal that you have not installed in a hub, try fitting that new seal on the spindle first before installing the seal in the hub. It sounds like you have the wrong seal or you just need to push a little harder to get it on the spindle.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| | | | | Joined: Apr 2009 Posts: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | You are right and thanks for the quick reply! WHOOPS on my part, I just figured out that I purchased the wrong seals. The original seal number is GMC 2226530, and my earlier research led me to National seal #370019A - but my double checking this evening led me to SKF #45150/National 415351. The difference is a 4-3/8 shaft diameter vs. 4-1/2. I try to be careful with part # cross referencing but I goofed up on this one!
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
| | | | | Joined: Feb 2016 Posts: 1,990 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,990 | Glad you discovered it before any damage was done, good job!
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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