Rear Brake Pads and Rotor Replacement

The Rear brakes had worn down and the rotors had worn to below their minimum thickness so it was time to replace both. I replaced the rotors with PowerSlot Zinc washed slotted rotors. The zinc wash and slotted rotors were not something I was intending however they were not to expensive compared to the stock replacement rotors and the cosmetic look isn't bad either.

I replaced the rear pads with AC Delco rear pad kit (GM# 171-732) These are the stock PBR pad and since I was also replacing the front brakes with a Baer Sport system which are also PBR pads (which are not what is stock). This total PBR system was recommended by Baer Racing.

1. Remove the wheel but put one lug nut back on to prevent the rotor from falling off by accident. Place a large C-clamp (my 9" one just fit for the job) so that it presses on the back of the outer pad and the other on the caliper near the bleader. Turn the clamp to compress the piston.
2. To change the rotor (If you are just doing pads you can skip this part) remove the upper and lower caliper mounting bolts and then remove and support the caliper so that it isn't hanging from the brake hose.
3. Remove the old rotor (If you are just doing pads you can skip this part) and put the new rotor on. Replace the caliper and the upper and lower caliper mounting bolts.
4. To change the brake pads, remove the upper guide bolt (15mm) and discard while supporting the 17mm reverse threaded nut and rotate the caliper.
5. Remove the old pads and H shim. Install the new H shim and pads as shown. Be sure that the wear indicator is on the leading edge of the pad when the rotor is turned in the forward direction. Also be sure that the springs on the pads are located properly per the instructions that come with the kit.
6. Rotate the caliper back into position and install the supplied upper guide bolt. Torque to 25 ft lb. Also torque the upper and lower caliper mounting bolts to 74 ft lb.


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