Posted by Al Sutherland on September 04, 2012 at 09:47:49 from (71.246.85.212):
I have replaced the 6V voltage regulator on my 1951 Farmall cub three times this year. Nothing is new on the tractor (i.e. same wiring, electrical system & parts that have been on the tractor for years). Symptoms are that the regulator works fine for a month or so, then it stops charging. I tap the regulator and it works for something like 15 minutes and then stops charging. I also re-polarize the regulator which, again, gets it working for a short while. Finally it quits completely and I can do nothing to get the regulator to work. There is never any evidence of what has failed - no burn smell, everything clean and new looking, contact points look clean and are easy to work with my fingers.
What might be causing this failure and is there a way to detect what is happening (e.g. measure voltage at some point)?
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Today's Featured Article - Identifying Tractor Smells - by Curtis Von Fange. We are continuing our series on learning to talk the language of our tractor. Since we can’t actually talk to our tractors, though some of the older sect of farmers might disagree, we use our five physical senses to observe and construe what our iron age friends are trying to tell us. We have already talked about some of the colors the unit might leave as clues to its well-being. Now we are going to use our noses to diagnose particular smells. ELECTRICAL SMELLS
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