Originally Posted by NM Taco
Just purchased an '01 that has 113k on it and seems to have excessive play in the center bearing. I do have a (rear?) vibration between 60 and 70 mph and the newer-looking BFG ATs are cupping already. My rear leafs look pretty tired and I'm planning to replace them pretty soon too since I'm experiencing unacceptable axle wrap. Would poor rear leafs cause premature center bearing wear with the axle wrap I'm experiencing? If so, I'll hold off on the driveshaft work until the new leafs are installed.
Is your vibration on accel or deaccel, does it go away with the clutch in?
be sure to check you rear ujoint first. disconnect the drive shaft from the rear diff and check it for play. You will not get much if any play when it is connected. I replaced my carrier bearing and it was more the rear u joint that was the problem. Oh make sure to make some alignment marks before you disconnect the drive shaft.
Hope that helps.