Bronco & F150 (Automatic Locking Hub)

Raise and support front of vehicle. Remove wheels. Remove locking hub assembly. See AUTOMATIC LOCKING HUBS in this article. Remove outer lock nut with Spanner Lock Nut Wrench (D85T-1197-A). See Fig 1 .
Remove lock washer. Tighten inner lock nut to 50 ft. lbs. (68 N.m). Back off inner lock nut and retighten to 30-40 ft. lbs. (41-54 N.m). While rotating hub, back off lock nut 90 degrees. Install lock washer so key is positioned in spindle groove.
Rotate inner lock nut so pin is aligned in nearest lock washer hole. Install and tighten outer lock nut to 106-205 ft. lbs. (217-278 N.m). Final end play of hub should be 0-.006" (0-.15 mm).

Fig 1: Adjusting Wheel Bearing (With Automatic Locking Hub)

Courtesy of FORD MOTOR CO.