WARNING: This page is about a different car, the 2013 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.
Remove and discard the halfshaft seal.
Fig 1: Locating LH Halfshaft Seal
Courtesy of FORD MOTOR CO.
Using the special tools, remove the differential case bearing cup.
Fig 2: Removing Differential Case Bearing Cup Using Special Tools