backlash

Will a pinion that has excessive backlash cause a vibration at high speeds?
I know it has excess, cause when I put it in D or R it has a nice clunk to it.
When I put it on the hoist you can move it back and forth real good. It is not the u joints as they are new.
This center was rebuilt about a month ago, so I wonder if the backlash is not set right.
Any thoughts?
Author: admin