In all my years working on tractors... I've yet to find a digital Fluke that gave a wrong reading... so I'd tend to think that the reading is correct unless you have some poor, poor meter. If it's a true one wire hookup then I would suggest that you check the ground connection from the alternaotr case to the tractor's chassis and the chassis to battery connection to make sure they're clean and tight. Beyond that... I would say you have an alt with a bad regulator. Also keep in mind that if you even momentarly crossed the polarity at any point in that system by hooking power to ground you may have fried the regulator. I've seen big Leece's that would push voltage like that with bad regs... after they got arced. If that's what's happened, exchange it for another one.
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Today's Featured Article - Adding an Hour Meter - by Steven Gussey. This article tells how I added an electric hour meter to my 1942 Farmall H after rebuilding it. I wanted to keep an accurate maintenance schedule for my rebuilt engine and the implements I use with my tractor, but the H was never available with a tach
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