Wheel Hubs and Bearings - Full Floating Axle - Dana

Hub





Special Tool(s)

Removal

All vehicles
1. Remove the tire and wheel assembly.





2. Remove the anchor plate.





3. Remove the axle shaft.





F-350

4. NOTE: Make sure that the drive tangs on the special tool engage the four slots of the hub nut.

Using the special tool, remove the hub nut.





F-450 and F-550
5. Using a suitable socket, remove the hub nut.





All vehicles
6. Remove the outer rear wheel bearing.
7. Remove the rear hub and brake disc assembly.





8. Remove the bolts and separate the rear hub from the rear brake disc.
9. Inspect the rear hub for the following:
^ Cracks and damage around the bolt holes.
^ Oversized holes.

Installation

1. WARNING: Install a new rear hub seal after removing the rear hub from the axle. A damaged or worn seal can permit bearing lubricant to reach the brake linings, resulting in ineffective brake operation. Failure to follow these instructions may result in personal injury.

CAUTION: Clean and remove any dirt or foreign material in the rear hub bolt holes.

Install a new rear hub seal.





2. Position the rear brake disc on the rear hub and install the bolts.





3. CAUTION: Thoroughly clean the spindle. Wrap the spindle threads with electrician's tape to prevent damage while installing the rear hub and brake disc assembly.

CAUTION: Lightly coat the spindle and pack each rear wheel bearing with Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.

Prepare the spindle for rear hub installation.
4. Slide the rear hub and brake disc assembly over the axle housing spindle.
^ Remove the electrician's tape.





5. Install the outer rear wheel bearing.





6. Start the hub nut making sure that the tab aligns correctly in the keyway prior to thread engagement.





7. NOTE: The following hub nut tightening sequence will prevent side-to-side end play of the hub and brake disc assembly.

NOTE: Apply inward pressure to the socket to separate the ratcheting components of the hub nut.

To adjust the bearings, tighten the nut to specification.
8. Back off the nut 90 degrees.





9. Tighten the nut to specification.
^ To verify that there is no side-to-side end play, attach a magnetically mounted dial indicator to the spindle end and place the dial indicator tip on the outboard surface of the hub. Check for side-to-side end play.
^ Final bearing adjustment has zero end play. The maximum torque to rotate the hub is 2.3 Nm (20 inch lbs.) when end play is zero.





10. Install the axle shaft.





11. Install the anchor plate.
12. Install the tire and wheel assembly.