When removing the driveshaft, what is the reason for making sure the drive shaft is re-installed with the same u-joint orientation? Is it because the drive shaft is balanced to work in one position only or because of how the the u-joint and yoke have worn together?
I have a driveshaft vibration after replacing my torque tube donut, and it's better now if I put the driveshaft 180 degrees out from how it was before. Just trying to figure out why that is and whether replacing the u-joints would help or not. It's still vibrating a little and I'd like to fix it. Maybe it's just the heavy duty OGTS donut that's causing this?