WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL
Courtesy of FORD MOTOR CO.
Installer, PTO Drive Gear Outer Oil Seal 308-430 or equivalent
Fig 1: Identifying Output Shaft Seal, Pinion Flange And Nut