Q: How to inspect and replace the parking brake shoes on a Lincoln Navigator equipped with air suspension?
A: If the vehicle is equipped with air suspension, turn off the air suspension system. The switch is located in the area of the right kick panel. Release the parking brake. Loosen the rear wheel lug nuts. Raise the vehicle and place it securely on jackstands. Remove the wheels. Remove the Brake Calipers and the Brake Discs. Clean the parking brake assembly with brake system cleaner before beginning work. Follow the instructions for the inspection and replacement of the parking brake shoes. Be sure to stay in order. Clean the brake disc/parking brake drum and check it for score marks, deep grooves, hard spots (which will appear as small discolored areas) and cracks. If the disc/drum is worn, scored or out-of-round, it can be resurfaced by an automotive machine shop. Repeat this procedure for the other rear brake assembly. Install the brake discs and the brake calipers. Install the rear wheels, install the lug nuts, lower the vehicle and lighten the wheel lug nuts. Reactivate the air suspension, if equipped.