Answer:
Are you asking about a brake drum? Those can be a bit tricky. There should be a few rubber plugs on the Anchor side of the brake drum. You can gain access to the anchor side from underneath the car. Remove the rubber plug. Look inside this small hole with a flashlight, you should if you can see a star-wheel like object, and a small lever that touches it. With the appropriate tools, a rear brake spoon and a small screwdriver, or a medium sized screwdriver and a small one. Back the star-wheel off to release the tension of the rear shoes, on the rear drum. Then, you will have to hit the rear drum with a hammer to knock it loose. (PLEASE BE SURE TO HAVE CAR WELL SECURED ON PROPER JACK STANDS, BECAUSE SOMETIMES YOU HAVE TO HIT IT PRETTY HARD IN A FEW SPOTS, AND DIFFERENT DIRECTIONS).