Wheel Hubs and Bearings: Notes
WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The rear hub is supported or floats on the axle spindle on 2 opposed tapered roller bearings. The rear hub is retained on the spindle by a ratcheting nut that is tabbed to a slot on the spindle. A seal is installed inboard of the inner rear wheel bearing to keep the rear axle and wheel bearing lubricant from the brake components. The full-floating rear axles on E-350 vehicles have the brake discs mounted outboard of the rear hub, permitting brake disc removal for brake inspection without the need to remove the rear hub.