Pontiac 7470587 Wheel Hub

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To remove the hub and bearing assembly from a vehicle, start by putting the vehicle in gear, applying the parking brake, and breaking loose the driveaxle/hub nut with a socket and large breaker bar. Then, loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands. Remove the wheel and the driveaxle/hub nut. Next, unbolt the brake caliper and hang it out of the way with a piece of wire, and remove the brake disc. For models with four-wheel ABS, trace the electrical lead for the wheel speed sensor and unplug the electrical connector. Remove the hub assembly-to-steering knuckle bolts, as well as the brake disc shield and wheel speed sensor assembly. Tap the hub assembly from side-to-side to break it loose from the steering knuckle, and pull it off the end of the driveaxle. If the hub is stuck on the splines, use a puller to free it. To install the hub and bearing assembly, lubricate the driveaxle splines with multi-purpose grease and tighten all of the fasteners.

To check for excessive play, grasp the top and bottom of each tire and move the wheel in and out on the spindle. Any noticeable movement indicates the need for bearing inspection, repacking with grease, or replacement.

The bearing puller can be found at tool stores and auto parts stores.