I've been searching for info on the center bearing to see if mine needs replacing. All I have seen is if it has excessive play. I guess my guess my question is how much play is excessive??

 

normally when they need replacing will start eating away at the rubber mount

 

i can push it up about a quarter of an inch is that too much?

 

as long as bearing is not loose in rubber mount it should be fine,normally you can move it

 

What are we talking about here?

 

I have been experiencing vibration @ about 40 to 50 mph and I seen in previous threads that this may be due to a center bearing. I am trying to determine if mine needs replaced. As I said before all I could find is it has excessive play in it then it needs to be replaced, so I was wondering how much play is excessive.

 

Driveshaft support bearing.

 

My truck doesn't have this. SuperCab+LongBed=One Long DriveShaft