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C charging problems
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Posted by Tim Mattson on October 16, 2006 at 12:10:19 from (207.91.16.162):
My 1948 Farmall C charges but not enough to keep up with the lights on. The C has a magneto and orginally had a cut-out relay. I switched to a voltage regulator but it didn't help any. With the tractor off, the battery's voltage is at 6.20, with it running at high idle its at 6.30v, and shows 5 amps on the ammeter. With the lights on dim, it drops to 6.20v and a discharge of 7 amps, and with the lights on high is goes down to 6.12 volts and a discharge of 9 amps. I've checked the grounds on the generator, regular, and instrument box and ran an extra wire back to the ground post of the battery, did the motor test on the generator, ran good, with the field grounded, then ungrounded it ran faster. I've replaced the generator brushes and adjusted the third brush to the highest setting. Any ideas?
Thanks
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