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I made the rounds of the bearing and truck parts suppliers today. None of them could find any of the 14 cross-match numbers. One old codger had a stack of the old paper catalogues that no-one else remembers, and spent half an hour going through them and calling contacts who usually have obsolete stock. No luck.
So what's wrong with these cross-matches? Did manufacturers use different numbers in the UK? ALL of them? Are all of these numbers as obsolete as the GMC number? One supplier suggested that this may be a proprietory part that was made only for GM, and never listed as available to anyone else. I did notice that the list was published by a Chinese company, so maybe it's all lies. Though the dimensions they list are correct. While looking at alternatives, it occurred to me that a simple way to solve the problem, rather than trying to polish the shaft, would be to machine a half-inch thick annular disc, a press fit on the shaft, with appropriate clearance in the bore, then cutting an o-ring groove in its outer edge. The o-ring would then serve as the seal. What am I missing? Why wouldn't this work? |
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