Quote:
Originally Posted by Savoy43A
***UPDATE***
Issue has been resolved, just as I was suspecting after troubleshooting the
Starter generator was internally shorting the field coil wire to the case which
Which was causing both F terminals and DF terminal to constantly show
Continuity to the case- looked like the manufacturer knew about it and tried to
Fix it with some insulator paper but it had shifted- I moved the wire from touching the housing and wrapped with insulator and sure enough all three terminals were good- re assembled and installed on cart and sure enough the voltage is 12.7 resting and 14.6 charging at high rpm’s - highly recommend bench testing any admiral MOT-2003 starter generators before you leave the Supplier - most won’t warranty, they are very expensive, and I had two consecutive parts that were both crap with separate issues -
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I had exactly the same (intermittent) over charging issue after installing a new voltage regulator and starter/generator on my 2010 RXV gas cart. I beat my self up trying to figure it out over a couple days in near 100 degree heat.
Installed a new voltage regulator and starter/generator. Running at full throttle, I got up to 18 volts at battery with the green wire connected. After another new voltage regulator (thinking with my luck I got a dud), I had the same problem. I disconnected the green wire at the DF terminal thinking the wire might be grounded. Same condition. I removed the new starter and reinstalled the original starter/generator and the voltage was then regulated at 14.8 volts max.
My guess is (based on your situation) that DF terminal being grounded to the frame internally, caused generator to backfeed through the power cable at the solenoid, and feed unregulated voltage directly to the battery. That condition would bypasses the voltage regulator circuit. I may very well run into the issue again with the old starter as it was an intermittent problem to begin with.
Just a side note: I was careful when attaching the green wire to the DF terminal post as to not twist it to cause internal shorting.
I bought the new starter/generator on Amazon with free returns and free return shipping and glad I did. If I had had no defective issue, I would not need to return it (which is hard to accomplish with any electrical items at most all venders). It's irontic that the vendor sells the item stating no returns on electrical parts, and you install it and even if it is defective, it is considered used and usually unreturnable. That was the reason I used Amazon Prime as it allows free returns and free return shipping for any reason even though the selling vender states otherwise. (I havent got my return yet but hope they are true to their word). I will post if I have any problem with that.
Hope you can figure out what I'm trying to explain here. My first time posting. Old Stan