I see this a lot, the dirt that gets sucked into the belts from fan draft eats at the pulley till it wears the "V" flat, then the belt is drawn down into the worn "V" and it flairs the outer edges like the one in the picture,,no one normally looks at the pulleys, but on larger tractors with bigger fans it becomes a real problem,, the belts will slip and squeal, so they get tightened up more, then the water pump bearing and the alternator suffer from the extra tension. When I do an engine over haul I look at the pulley wear and change them out if needed, a worn pulley can let an engine over heat, and of course make a water pump bearing fail too soon.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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