Before removing the rear brake rotor, raise and support the vehicle first. Following this, take out the wheel mounting nuts and replace the tire and wheel assembly forward. If the pads are too tight against the rotor, it may be important to back out the caliper piston a little to give enough room for caliper removal from the knuckle. To do this without damaging the piston, place your hands on the inboard side of the caliper, grip it firmly and slowly push it outwards together with the guide pins as you avoid contact with the piston. After that, remove the disc
Brake Caliper lower guide pin bolt. Do not let the caliper move up so far that you strain or break the flexible hose. To make removing the rotor possible, flip the caliper so the upper guide pin bolt acts as a hinge and hold the caliper up with wire or a bungee cord. Afterward, move the brake rotor away from the hub and bearing and take it out.