Chevrolet 15942195 Front Brake Rotor

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Loosen the lug nuts, remove wheels and lift the front end of the car onto jackstands in order to examine brake system. Put wheel back on and tighten the lugnuts to secure disk. After you have finished, ensure that caliper is far away from it by hanging with a wire. Take a close look at the disc surface for any signs indicating that it has been hit or damaged before, as well as test for its run out using dial indicator. The rotor may require resurfacing by an automotive machine shop if necessary. Besides, check whether the rotor thickness is within limits of specified minimum thicknesses set by manufacturer. To remove unbolt caliper mounting bracket, remove lug nuts and then take off disk from hub. If you are removing rear disc also disconnect caliper mounting bracket from rear knuckle. When installing place disk over threaded studs and install caliper and pad assembly that way; tighten bolts in calipers; mount wheels; lower vehicle; Tighten lugs; depress brake pedal until pad comes into contact with disk; check how brakes work before one enters a traffic moving situation when drive being done.

Initially, before inspecting the brakes, loosen the wheel lug nuts and raise your vehicle on jackstands. Also, don't forget to engage the parking brake before removing the wheels. While looking at its disc surface, check for any score marks or damages. Light scratches and slender grooves are general and don't interfere with brake performance; nonetheless, deep grooves need a disc that will be taken out and refinished by a machine shop. Check both sides of the disc. To verify if there is any warping in the disc, position a dial indicator about half an inch from outside edge of the disc and zero it out. Rotate the disc while ensuring that its runout limit specifications are not exceeded in reading by this instrument. If so happen it must be refinished (the disc). Refinishing disks is highly recommended when replacing brake pads to achieve smooth finish thereby ending any pulsation on braking pedal whatsoever. In case they are not resurfaced use emery cloth or sandpaper to take off glaze from their face up side or down side as well . In order to ascertain this one can measure its thickness using micrometer so as to see whether its not less than minimum thickness written on it For removals purposes only remove calipers leaving hoses intact just hang them somewhere aside On new models take away also caliper mounting bracket In case of front discs remove grease cap , wheel bearing retainer nut spindle nut outer bearing retainer washer and outer wheel bearing respectively before taking of the disc/hub For rear discs just pull them off from wheel studs only This is done contrary to removing it where you have got to put back caliper mounting bracket as well as tighten back wheel lug onto appropriate torque for it As we lower down our vehicle in inspection place all things secure.

If necessary, the disc should be refinished by an automotive machine shop.

If the disc has excessive runout, it should be refinished.

Disc runout can be checked by placing a dial indicator at a point about 1/2-inch from the outer edge of the disc.

After raising and supporting the vehicle, the brake caliper should be removed and the disc surface visually checked for damage.

After loosening the wheel lug nuts, the vehicle should be raised and securely supported on jackstands.

After installing the new disc, the wheel and lug nuts should be installed, the vehicle should be lowered, and the brake pedal should be depressed a few times to bring the brake pads into contact with the disc.