Suggestions already offered are all good. But here's another quick check before getting in too deep:
Look at the back of the alternator - make sure the regulator shorting tab (the small ear inside the D-shaped opening in the photo) is clear. If it is bent, or there is anything conductive caught on it so the tab is grounding to the case, the regulator is bypassed which causes the alternator output to "run wild".
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To Allan in NE: With due respect, there is NO tractor application (or any application for that matter...) with a design voltage of 16.5 volts. Running a 12 volts system constantly above 15.0 volts will destroy the battery in short order. It also dramatically shortens life of incandescent lamps.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
... [Read Article]
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