Loose the wheel bolts, uplift the vehicle and place it on jackstands. Take out the wheel and refit the wheel bolts tightening them up firmly to check the runout. When the bolts fail to make contact with the disc when screwed on completely, place washers under the bolts. Take out the
Brake Caliper without removing the
Brake Hose, and hang the caliper out of the way using a piece of wire. Open the disc lid and look at the surface visually looking after any scars and other damage; extremely light scratches and shallow grooves are not a problem, but deep scoring necessitates removal and rebranding of the disc by a dealer automotive machine shop. Inspect the discs on both sides, extreme wear caused by poorly maintained brake pads can result in a replacement of the discs. In order to measure the disc runout, insert a dial indicator just 1/2-inch off the outer rim of the disc with the dial adjusted to zero and spin the disc, the dial indicator must not indicate a higher runout than the recommended limit. When it does, then one should refinish the disc. When replacing brake pads, it is also always good to resurface the discs to give it a smooth finish, which will remove the brake pedal pulsation. Unless resurfacing, wipe off the glaze on the surface with emery cloth or sandpaper in a swirling motion. Check that the disc is not cut to less than the required minimum allowable thickness which is cast into the disc. Measure the disc thickness at a number of points using a micrometer. Take out the two caliper mounting bracket bolts and loosen the mounting bracket. Unscrew the bolts that are affixing the disc then slide the disc off the hub. Install the disc in the hub flange to align the bolt holes. Install the caliper mounting bracket and screw the bolts to the required tightness. Install the caliper with guide pins or mounting bolts to particular torque. Install the wheel, lower the vehicle and attach the wheel bolts to the required torque. Pump the brake pedal a few times to get the pads in contact with the disc, and ensure that the brakes are functioning correctly before driving the car.