Chevrolet 15921402 Rear Brake Rotor

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To inspect the brakes, start by loosening the wheel lug nuts and raising the vehicle on jackstands. Remove the wheel and install the lug nuts to hold the disc in place. Then, remove the caliper and bracket as a unit, without disconnecting the brake hose, and suspend it out of the way. Visually inspect the disc surface for score marks and damage, checking both sides. If there is pulsating during brake application, suspect disc runout. To check runout, secure the disc to the hub with lug nuts and place a dial indicator about 1/2 inch from the outer edge of the disc. The reading should not exceed the specified runout limit. If it does, the disc needs refinishing. Ensure the disc is not machined below the minimum thickness, which is cast or stamped into the disc. Use a micrometer to check the thickness. For removal, mark the disc in relation to the hub and remove it. If there are wave washers, cut them off. If the disc is stuck, use a mallet and penetrating oil. Clean the inner opening of the disc and the hub area before reinstalling the disc. Align the mark made and install the caliper mounting bracket and caliper. Then, install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts. Depress the brake pedal to bring the brake pads into contact with the disc. Bleeding is only necessary if the brake hose was disconnected. Finally, check the brake operation before driving the vehicle.