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Message: <blockquote data-quote="cajunfan24" data-source="post: 123753" data-attributes="member: 22688"><p>I have a 743 bobcat which I have just changed the spine gear and it's yoke . Starting the engine, I noticed heavy vibrations. When I increase the throttle ,the  vibration increases as well. This is the third time I have had to change either the Cupler or the universal joints on this machine sense 2013. Is it possible that the pump shaft  is bent causing the reoccurring damage. The spline gear only seats into the yolks about 1/2 ". The yoke clearly has another inch of space. The spacer between the two universal joints is about 1 inch thick. Should it be thicker?  Any advice would be greatly appreciated. Thank you.</p></blockquote><p></p>