Join Date: Jul 2008
Location: Hershey, PA / Middle River MD
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Autohelm ST4000 belt tension
I am having trouble with belt tension on my wheel unit. When I have the unit engaged, the belt seems way to tight. When it is disengaged, it is barely disengaged (still has a little drag). Often, when I engage it, it disengages on its own when the wheel turns in a CCW direction. If I engage it and reingage it several times, the belt seems to strech a little and then stay engaged better. I think the answer might be to lubricate the back side of the belt which comes in conctact with the cam of the lever. I have though about using wax or lanolin etc. It seems worse when it is damp or I have gotten water in the unit from rain. Any thoughts.
Note, I have had the wheel apart several times and I believe I know how it works. I have the tension cam adjusted with the least amount of tension. I have replaced the two pins that hold the lever arm onto the shaft (had corroded and sheered off). The belt looks fine and has all it's teeth.
I have read many of the posts on sailnet but have not found anything relating to lubricating the back side of the belt that comes in contact with the lever cam.