1937 120C Current Draw

Posted by R Howe On 2023/12/23 15:32:07

Hello. I finally was able to spend some time and track down the source of my current draw through the voltage regulator. With everything connected as it should be, including the mounting bolts attached, I get a current draw, i.e. a short circuit, which shows up on my voltmeter. My current regulator only has three posts to which the lines are connected; Battery (Black), Generator Armature (Red) and Generator field (Brown). Am I correct in assuming that the Generator Ground line would now be attached to the bottom bolt which connects to the frame of the regulator? Also, am I correct in assuming that the ground line from the generator to the regulator is in no way supposed to allow current to flow back through the body? What is happening now is that when attaching the bottom bolt on the regulator to the body, even without this ground line attached, this bolt is actually touching the body and I get the current draw, which I don't think is supposed to happen. The nut that, I think, is supposed to be insulated from the body to attach this bolt is no longer there, thus causing the short. I have a couple of ideas on how to correct this, one of them being to bore out the hole on the body a bit more so that I can fix an insulating sleeve over the bolt and then place an insulating washer on this bolt so that the nut does not make contact. Or, am I barking up the wrong tree?
Again, I thank you for your expertise. I hope you have or have had a wonderful holiday!

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