WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not strike the bearings.
Check the U-joint for freedom of movement.
If binding, strike the yoke with a brass or plastic hammer.