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Farmall 400 fluctuaing voltages
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Posted by JaredFarmall400 on September 03, 2006 at 20:03:43 from (66.163.158.179):
Hey everyone, Went to hook a electronic tach up to my 400 today and it did not work. Following hours of testing I determined that for some reason when I run the tractor the voltage that comes through the system is very unpredictable. My multimeter goes from 2v to 160v's and it all over the place. However, it only does this when the tractor is running. When the tractor is stopped it reads a solid 12.6 volts. I have always had a problem getting this tractor to charge the battery properly, always seemed like the battery was going dead. Thought the voltage problem was releated to the gen. So I unhooked the voltage regulator and the gen belt with the same results. I even tried hooking up a seperate battery to the ignition. The ignition battery showed fluctuatingvoltages and the rest of the sytem showed good. Not sure what is causing this problem, but I can't get the tach to work and I am thinking this is causing the gen to not function properly. The battery is hooked up positive ground and the tractor was converted to 12 volts at one time. Do I maybe need to reverse the polarity to negative ground? Not sure what to do. Any comments appreciated. Thanks
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