i AM GOING THROUGH SOMETHING SIMILAR ON MY McCormick MC 120(CaseIh maxum) I finally got mine narrowed down to the pulley being wore out on the alternator. So belts were slipping on alt pulley which screwed up the "hertz" being produced. It seams that regulates the tach which also controls the electronic pto switch and the electronic forward, back shuttle. It's been a nightmare for the last 2 years. So first thing to note is tach reading correct all the time? Mine would not register on start up but then if I revved engine and backed it off to idle then tach would kick in. But then as engine would warm up evidently belts would stretch and start slipping. Then belts would get glazed and slip all the time which led to the pulleys wearing and slip all the time. I am no expert but would note if your tach is acting right and go from there.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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