Ford 7S4Z-1104-A Hub Assembly - Wheel

On 2008 and later models, the manufacturer advises that all suspension and steering system fasteners requiring specific torque should be replaced with new ones whenever removed, excluding subframe bolts. The front hub bearings are non-adjustable and come pre-greased. To check for excessive wear, apply the parking brake, lift the front of the vehicle, and support it on axle stands. Grip the front wheel at the top and bottom, attempting to rock it; excessive movement may indicate worn hub bearings, which can be distinguished from wear in the driveshaft outer joint or front suspension lower arm ball joint. Hub bearing wear manifests as roughness or vibration when the wheel spins and may produce a rumbling or growling noise while driving. Removal of the front hub may damage the bearings, making them unserviceable, so the bearing assembly must always be replaced when the hub is changed. To replace the hub, first remove the steering knuckle and hub assembly, then remove the hub from the bearing inner races, preferably using a press or a suitable metal tube. Any remaining part of the inner race on the hub should be removed with a puller. The wheel bearing must also be replaced, as it may be damaged during removal. Extract the snap-ring securing the hub bearing in the steering knuckle with snap-ring pliers, then press or drive out the bearing using a metal tube slightly smaller than the bearing outer race. Clean the bearing seating faces in the steering knuckle, then press or drive the new bearing into the knuckle until fully located, avoiding pressure on the inner race. Locate the snap-ring into the groove in the knuckle, ensuring it does not cover the wheel speed sensor, then support the inner race on a metal tube and press or drive the hub fully into the bearing before reinstalling the steering knuckle and hub assembly.

The rear hub bearings are non-adjustable, and to check for excessive wear, chock the front wheels, jack up the rear of the vehicle, and support it on axle stands while fully releasing the parking brake. Grip the rear wheel at the top and bottom, attempting to rock it; excessive movement or roughness when spinning indicates worn hub bearings. To replace, first remove the rear wheel, then tap off the dust cap and unscrew the hub nut, which is of special laminated design and should be reused a maximum of four times, marking it each time it is removed. Next, remove the rear brake drum, using a suitable puller if necessary, and apply penetrating oil or heat if the drum is stubborn. Ensure any remaining part of the inner race on the stub axle is removed with a puller, and take out the ABS sensor ring if equipped, as it must be replaced upon reinstallation. Extract the snap-ring securing the bearing in the hub/drum with snap-ring pliers, then press or drive out the bearing using a length of metal tubing slightly smaller than the bearing outer race, and clean the bearing seating faces. Press or drive the new bearing into the hub/drum until fully located, ensuring no pressure is applied to the inner race, then secure it with the snap-ring. Slowly and squarely press the new ABS sensor ring onto the hub assembly, as damage can cause ABS system failure. Locate the new rear hub/drum and bearing assembly on the stub axle, install the hub nut, and tighten it to the specified torque while rotating the hub assembly in the opposite direction to prevent bearing damage. Finally, tap the dust cap onto the hub, install the rear wheel, lower the vehicle, and tighten all bolts and nuts to their specified torque.