Posted by Kajun on April 29, 2009 at 07:39:29 from (206.251.164.114):
Guys (and Girls):
I've never been able to understand electrical systems. Here is the history and scenario.
1. 1960 Cub with six volt system . Left the push-pull switch 1/2 engaged and battery ran down. Put the charger on it (50 amps -6 volt setting). Forgot to disconnect the starter and charged for 10 minutes ; I then disconnected and went to other work . About two hours later ,the battery blew up.
2. Bought new battery and installed. Ammeter showed discharge only one time. Then went to neutral ,despite turning switch on-off several times.
3. Starter ,with new battery, never budged or responded. New battery puts out 7 volts and there is six volts at starter read from the starter lead .
4. Want to avoid expensive rebuild -- I am really cheap. I have new starter switch (device like solenoid on top of starter that engages with reach rod). Anyway to tell that replacing this will be a fix? Any way to avoid rebuild ?
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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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