WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Do not crush the bearing cage.
Fig 1: Installing Output Shaft Bushing
Courtesy of FORD MOTOR CO.
If removed, using a suitable press and the special tool, install the output shaft bushing.