With 3 terminals, I would say it is a voltage regulator. Other than keeping with originality, a voltage regulator IS better. If you want a CO relay that is of the original appearance, you will most likely have to find a used one because I know of no one reproducing that style. The smaller style, such as used on a John Deere, IS being reproduced, but that one will not be correct for a '39 M.
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Today's Featured Article - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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