Chevrolet 18027868 Front Brake Rotor (W/Hub)

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Loosen the wheel lug nuts, raise the front of the vehicle and support it securely on jackstands. Apply the parking brake. Remove the wheel. Remove the brake caliper. Visually inspect the disc surface for score marks and other damage. Light scratches and shallow grooves are normal after use and won't affect brake operation. Deep grooves-over 0.015-inch (0.38 mm) deep-require disc removal and refinishing by an automotive machine shop. Be sure to check both sides of the disc. To check disc run out, place a dial indicator at a point about 1/2-inch from the outer edge of the disc. On 4WD models, install two lug nuts, with the flat sides facing in, and tighten them securely to hold the disc in place. Set the indicator to zero and turn the disc. The indicator reading should not exceed 0.006-inch. If it does, the disc should be refinished by an automotive machine shop. Note: Professionals recommend resurfacing the brake discs regardless of the dial indicator reading. At the very least, if you elect not to have the discs resurfaced, deglaze them with sandpaper or emery cloth. The disc must not be machined to a thickness less than the specified minimum refinish thickness. The minimum (or discard) thickness is cast into the disc. The disc thickness can be checked with a micrometer. On 2WD models, the disc is an integral part of the front hub. Hub removal and installation is done as part of the front wheel bearing maintenance procedure. On all 4WD models (except one-ton [K-30] models) the disc can be pulled off the hub after the wheel and caliper have been removed. On one-ton [K-30] models, 4WD models, the disc is pressed on the hub and must be removed as a unit with the hub and bearing assembly. If replacement of the disc is necessary, take the assembly to an automotive repair shop to have the old disc pressed off and the new one pressed on.