Vibration

[Scaper]

I have a Boomer 1030 that has a vibration when running in either high or low range but most pronounced in high . I had to replace the coupler that attaches the solid steel shaft that connects the output shaft of the hydro to the carrier bearing located towards the front portion of the tractor. This was necessary due to the front drive shaft locking bolt failing located in front of the pillow block on the splined shaft. Everything has been replaced and lubricated but now I seem to feel a vibration when under power. I made sure I wasn’t locked in fwd when testing the tractor. The vibration is most noticeable at higher RPMs. I rechecked my work and everything seems as it should be if anyone has an idea about what could be causing this I could use the help. By the way my unit does have sensitrac. I have been off site for quite awhile due to an injury almost six years ago, but was always thankful for the help I received in the past. Mark

 

[Jerry/MT]

If the shaft has u-joints at either end are they phased properly?

 

[Scaper]

If I'm correct there is only one way to attach the front drive shaft to the front axle due to the alignment bolt in the rear shaft coming from the hydro output shaft. The front portion of the shaft has welded on U joint yolks they can't be hooked up out of alignment (or can they somehow?) I didn't see any marks that would show a proper spline installation for the yolks. This is the first time I have had to do this a mechanic friend also mentioned (phase) but when we were under the tractor he said with the locking bolt in properly there was only one way to slip the front yolk onto the input spline for the axle. Never having done this before equates to not knowing. Please explain the process if you can.

 

[Scaper]

Thanks for any help Jerry.