I had a lot of play in the front passenger-side wheel and it was due to the bearing in the hub assembly being worn out. The swap is very straight forward. All components are easy to access and remove in your own garage.

[b]Parts Needed[/b]
(1) New Dana 50 Hub Assembly with ABS - Part #: F81Z-1104-BH
(1) Axle yellow o-ring seal - Part #: F81Z-4A322-AA

[b]Tools Needed[/b]
Floor jack
Jack stand
(Air tools preferred)
21mm socket for lug nuts and caliper bolts
8mm socket and 3/8" ratchet for ABS sensor bolt
C-clip pliers (for removing fastener on axle)
Pliers

Brand new Dana 50 hub assembly. Front axle bearings in the Dana 50 are non-serviceable, so when the bearing fails, you have to purchase the entire assembly. This is Ford part # F81Z-1104-BH and is for Dana 50's with front ABS (hence the included ABS sensor wire).

Same hub assembly without the plastic plug.

The old hub assembly. Notice the 4 studs (threaded on each end). The studs feed through the holes in the steering knuckle and have 4 bolts to fasten the hub assembly to the knuckle. Tighten 2 nuts on the same end in order to remove these studs.

Notice the yellow o-ring (Part # F81Z-4A322-AA ) and how it is shredded. Do not expect to be able to re-use this o-ring. Plan ahead and pick on up at your dealer (it's less than a $5 part).

Close-up of the front passenger knuckle with wheel, caliper, hub assembly, and brake dust shield removed.

The entire hub assembly swap will take 60-90 minutes and is very straight-forward.

[b]Remove the retaining/c-clip from the hub[/b]
http://www.supermotors.net/vehicles/registry/media/431287

[b]Remove the hub from the dana 50 front axle[/b]
http://www.supermotors.net/vehicles/registry/media/431288

[b]Remove axle c-clip from dana 50 front axle[/b]
http://www.supermotors.net/vehicles/registry/media/431289

[b]Remove the 3 washers from the axle[/b]
http://www.supermotors.net/vehicles/registry/media/431290

[b]Remove nuts on back of hub assembly[/b]
http://www.supermotors.net/vehicles/registry/media/431318

[b]Disconnect the ABS line[/b]
http://www.supermotors.net/vehicles/registry/media/431320
The new hub assembly comes with a new ABS cable already connected to it. Simply follow the line back to the plug on the inside of the fender and disconnect.

[b]Tap and pry loose the hub assembly[/b]
http://www.supermotors.net/vehicles/registry/media/431359

Install your new hub assembly (don't forget to get a [b]new[/b] o-ring (the yellow one). You can view a re-installation video from my ball joint article here: http://www.supermotors.net/vehicles/registry/media/431385