| [GMCnet] #520 ultravan and GMC rim off set [message #215974] |
Sun, 28 July 2013 11:00 |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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> From: Don Adams <dj.adams@att.net>
> Subject: Re: [GMCnet] # 520 Ultravan
> To: gmclist@temp.gmcnet.org
> Message-ID: <34adf.51f2ac2f@gmc.mybirdfeeder.net>
> Content-Type: text/plain; charset="ISO-8859-15"
>
> Yes Don, they do. What makes the Toronado bearing Assembly work on our GMC's is the 8 lug hubs. Rims have an offset that centers the tire over the center line of the bearing. This keeps the load on each bearing equal. As both inter, and outer bearings are the same size in our case. There are cases that the manufacturer doesn't have the tire center line, and the bearing center line, aligned. In that case, a larger bearing is used to carry the extra load put upon the bearing
> with that extra load. Unfortunately, most people think that if a rim fits the bolt pattern. It's OK. And the issue of rim off set is NOT considered. Bearing life will be affected. Long story short. Install a rim with the off set that the manufacturer designed the bearings to handle. ( minor wrong off sets I suppose could be tolerate ) Install the CORRECT rim for the bearing center line. You can measure that dimension.
> BobDunahugh wrote on Fri, 26 July 2013 10:11
> > As I recall, the one here in Iowa has Toronado, 15 inch, 5 lug rims. I have 4 of them. Bob Dunahugh
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> Bob, do those have a deep dish as our 8 lug truck wheels do?
> --
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