Posted by LMP from CT on June 25, 2014 at 19:05:27 from (71.88.51.41):
On a JD 630 , I had the generator rebuilt and a new voltage regulator installed. Yes its 12v pos ground and I set the polarity. When you start the tractor and then bring up the rpm"s it charges just fine until it sences a fully charged battery and stops charging never to charge again. Until you shut down an restart again. It shows 2-3 negative amps on the gauge when running in this mode. I called the shop that did the rebuild and they said it was the battery. I have had 3 different batterys in the tractor with the same results. To me it needs a sensitivity adjustment. Any help will make me happy.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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