I don't think so. Here is a video of the output shaft running alone. My son helped me and sat in the seat, turning on the PTO. I didn't even know when he turned it on, it was that smooth.
Not the best video...me with my hand-help cell phone camera. But the shiny spot on the end of the shaft sits pretty solid, so I am thinking the shaft is running straight.
The shaft is a poor design. It is essentially the splined output shaft with a gear on the other end. The gear is supported on either side by ball bearings. But they are really only the thickness of the gear (1/2 in or so) apart. So those two bearings have to support the shaft, and all the weight/vibration it carries. With that little lateral separation between the bearings, the "support reactions" as they are called is incredibly high. I am surprised the aluminum transmission cover itself did not fail.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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