Ford 2003 Mustang Workshop Manual page 466

16. Using the special tool and a suitable press, remove the pinion bearing (4630).
1. Position the special tool under the pinion bearing.
2. Using a press, remove the pinion bearing.
17. NOTE: Using a micrometer, measure the drive pinion bearing adjustment shim thickness. Use
this measurement as a reference to compare to the shim gauge reading taken prior to installing
the pinion bearing.
Remove the drive pinion bearing adjustment shim (4663).
18. Using a brass drift and a hammer, remove any damaged differential drive pinion bearing cup
(4616) (4628) from the differential housing. Tap alternately on each side of the cup to prevent it
from cocking in the bore.