The area should be accessible for the rotor replacement by raising and supporting the car before you start. After removing the wheel mounting nuts, take out the tire and wheel assembly. Sometimes, you might need to retract the caliper piston a bit so it's easy to remove the caliper; just pull the caliper outward from the knuckle with the guide pins, trying not to touch the piston. Following this, remove the lower guide pin bolt from the disc
Brake Caliper. When pulling the rear brake caliper upward, be sure not to harm or elongate the flex hose. Raise the caliper up on its upper pin bolt once you can see the bolt head, enough to allow you to take out the brake rotor and then secure the assembly with wire or a bungee cord. After removing the retaining clips, slide the brake rotor off the wheel studs, hub and bearing and remove it.