Bill, under the right conditions a soft metal or even plastic bushing will wear wear steel more rapidly than a steel bushing. What happens is that the brass, bronze or plastic will pick up particles of abrasive material such as silica sand which can become firmly enough imbedded in the soft metal that it will wear the steel. I had this happen on a piece of equipment that I used to service many of for customers. The manufacturer replaced a bronze bushing with a plastic one hoping to increase the life of thrust washer. What happened was that under most conditions the plastic would load with hard particles and wear into the Thrust washer way faster than the bronze had. There is usually no shortage of dust in your hayfields when baling.
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Today's Featured Article - Updatin The Charging System of Your Older Tractor - by Tyler Woods. Older tractors have externally regulated generators or externally regulated alternators, in some instances. That means there is one device that turns energy from the fan belt into electrical energy,
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