If this is the Autohelm wheel autopilot with the black ring around the wheel, then in both cases it seems like adjusting the cam should help. It is popping loose because there is too much tension, and the belt is slipping because there is too little. The grey wheel assembly is the newer version but not that much changed. The plug is removable using a small pick to pull out at one edge. It's pretty hard to do real damage to it. You should be able to download the old manual to get a good feel for how it works. Hoping this helps,
Bruce Whitmore (847) 404-5092 (mobile) bwhitm...@sbcglobal.net
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