Question 1

How to properly inspect and service Brake Rotor on Mazda 3?

Accepted Answer

Unscrew the lug nuts of the wheels, lift the car and place it on jackstands. Take out the brake caliper without taking off the brake hose; take off the caliper bolts and suspend the caliper somewhere off with wire item. You visually examine the rotor surface to find any kind of score marks or other damage; light scratches and shallow grooves are safe after use but deep scoring would make you have to remove the rotor and refinish it with an automotive machine shop. Examine both sides of the rotor: and when pulsating on braking, suspect rotor run out. To test rotor runout, screw in the lug nuts backwards and mount a dial indicator approximately half an inch away on the outer side of the rotor and set the indicator to zero and then turn the rotor. The reading of the indicator must not be more than the stated allowable runout limit otherwise, refinishing should be done to the rotor. Despite the dial indication, rotors are to be resurfaced so that they have a smooth finish and an excellent flat surface, with no brake pedal pulsation or other uncomfortable symptoms. In case it is not resurfacing, then wipe the glaze off the surface using emery cloth or sandpaper in a swirling motion. It is important that the rotor should not be machined to less than the required minimum thickness, cast or stamped into the inner of the rotor; check the rotor thickness with a micrometer. Unscrew the bolts and the bracket which hold the caliper mounted together and unscrew lug nuts (they were reattached during runout check), and the rotor. When the rotor is off, wipe the back side of the center part touching the wheel hub and remove all rust or dirt on the hub face. Squeeze small dots of a high-temperature anti-seize compound all around the circumference of the hub and the raised center area. Install the rotor in place, attaching the caliper mounting bracket and caliper, loosening the bolts to the desired values of torque. Fit the wheel, and pull the vehicle down to the ground and screw the lug nuts to the required torque. Press the brake pedal several times until the brake pads touch the rotor; there will not be any bleeding unless the brake hose was removed off the caliper. Be sure that the brakes are working before taking out the vehicle, and when new or old Brake Rotors are fitted to the rear, be sure the parking brake is working, and also that it is adjusted properly, where necessary. Lastly, do not drive without making sure that the brakes are fine.

Question 2

How to remove, install, and adjust front Brake Rotor on Mazda GLC?

Accepted Answer

To remove and install front wheel bearing and to adjust the preload on rears when the car is on the rear wheel drive, the procedure involves removal of the caliper assembly, which can be left with the hydraulic line and attached to the underbody in case the complete removal is not required. Then remove the rotor run-out, verify the run-out, then remove the cotter pin, nut lock, adjusting nut and washer of the spindle, thrust washer and outer bearing of the hub. Removing the brake rotor/wheel hub assembly off the spindle, matchmarking the rotor and hub and unbolting the rotor off the hub to ensure that the rotor does not get driven off the hub. The bearings are installed in the opposite direction modifying the bearing preload. In front wheel drive cars, loosen the lug nuts, lift the front end of the car and place it on jackstands and then remove the tire and the wheel. Test rotor run-out, lift the staked tab on the hub center nut, and remove the nut and secure the rotor by pressing the brake. Take off the brake caliper, prop it to the side, and dislodge the rotor off the hub. Install the rotor onto the hub, then the caliper assembly then install a new axle locknut to a specified torque then staked. On subsequent models, lift up the vehicle, stabilize, and check the play in the rotor and the wheel bearing, making sure that there is no evident play. Take the wheel and tire off, detach the brake line and the strut and suspend the caliper out of the way without removing the hydraulic line. Unscrew the rotor out of the hub, and screw it back into the hub then screw the caliper assembly in and ensure that the correct torque requirements are followed on the caliper bolts and driveshaft locknut. In different models, lift up the vehicle, hold it safe, check the brake rotor, and in case of need, take out the wheel bearing. Once the roughness or strange sound is checked, loosen the brake caliper without detaching the hydraulic line, and then take the rotor off of the hub and replace it on the hub together with the brake caliper making sure that the bolts and locknut have the right torque. In the case of the RX-7 models, it is necessary to remove brake caliper, anti-rattle spring, brakes pads and shims, then the caliper bracket, grease cap, split pin, nut lock, adjusting nut, washer, and outer wheel bearing, and finally, the rotor. Installation This is carried out by packing the outer bearing with grease and reassembling the brake caliper and front wheels. The inspection involves checking the lateral run-out of the rotor using a dial indicator in place, that all wheel bearings are correctly adjusted and removing or resurfacing the rotor in case the run-out is out of specification, and checking whether there are any scores or pits on the rotor surface.

Genuine Mazda Brake Rotor

101 Brake Rotors found

Mazda Rotor Part Number: K011-26-251C

Mazda Rotor Part Number: KD45-33-251

Mazda Rotor Part Number: B45G-26-251B

Mazda Rotor Part Number: B45G-33-251A

Mazda Rotor Part Number: GHT2-26-251

Mazda Rotor Part Number: VA40-26-251

Mazda Rotor Part Number: N251-26-251

Mazda Rotor Part Number: BCKA-33-251

Mazda Rotor Part Number: TK78-33-251B

Mazda Rotor Part Number: TK78-26-251A

Mazda Rotor Part Number: BDWK-33-251

Mazda Rotor Part Number: GHR1-33-251A

Mazda Rotor Part Number: BDTS-26-251

Mazda Plate, Disc Part Number: K20F-33-251

Mazda Plate, Disc Part Number: K13T-26-251

Mazda Rotor Part Number: C26Y-33-25XD

Mazda Rotor Part Number: N251-33-251

Mazda Rotor Part Number: B25Y-33-25XB

Mazda Rotor Part Number: K011-33-251B

Mazda Disc Part Number: EF91-26-251A

Mazda Brake Rotor

Mazda Brake Rotor Parts and Q&A

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