View single post by redracer
 Posted: 04-15-2020 03:19 pm
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Joined: 09-10-2012
Location: BROOKHAVEN, Georgia USA
Posts: 517
Likely the sprocket does NOT have the chamfer on the back to "capure" the steel ring. Aftermarket cam sprockets had been made WITHOUT this chamfer, so as you tightened the allen bolt, the sprocket would push the steel ring out of its groove.
You will need to remove the belt and sprocket(use a gear puller; don't Bang on it with a hammer).
If it does not have achmfer, or much of one to "capture" the steel ring, have it machined to do so.