Change Rear Disc Brakes

Changing rear disc brakes is actually a fairly simple operation, depending upon what vehicle you are changing them on, and whether you are changing the discs, as well as the pads. Most aspects of the task are common all vehicles. Check a specific repair manual for your vehicle make and model for more specific instructions
Procedure:
1. Jack the rear of the vehicle, and secure it on jack stands. Remove the lug nuts and the rear wheel, and set them aside. Use wood or wheel chocks to secure the front tires, so they do not roll, while you are working on the vehicle. On newer vehicles, ensure that the parking brake is not set. Otherwise, it will be difficult to remove the caliper and the rear disc.
2. Brake calipers are usually held in place by two bolts.
Remove the caliper. Usually, there are two bolts, holding the caliper in place. Often, these require an Allen wrench to be removed. Carefully, lift the caliper off the disc. Remove the old brake pads, and compare them to the new ones, ensuring you have purchased the correct pads. If you are simply replacing pads, skip to Step 4. If you are having rotors turned, or are replacing them, proceed to Step 3.
3. Remove the disc. There are a few different types, and removal steps differ. Check your manual for specific directions. The slip-off type will slide off the hub, or it will be bolted to the hub and can be removed by undoing the bolts and slipping it off the spindle. Simply remove the bolts, and slide these off, replacing them with new ones.
Hub-mounted rotors require you remove the hub. Remove the bearing cap and the cotter pin. Using a large socket, remove the axle nut. Then slide the hub off the axle, using care to catch the outside bearing, as you remove it. You will need to repack bearings, and replace the bearing seal, if you are replacing the hub/rotor assembly.
Replace the hub on the axle, after the rotor has been changed. Using a torque wrench, tighten the axle nut to the manufacturer's specifications. Replace the cotter pin and the bearing cap.
4. Use a C-clamp or a press to slide the caliper pistons all the way back into the caliper, to make room for the new brake pads. Place the new brake pads in the caliper, ensuring that all the brake hardware is replaced the same way it was removed. If desired, place an anti-squeal copper grease on the back of the brake pads, before placing them in the caliper. Place the caliper back over the brake disc, and apply grease to the caliper pin (smooth and shiny) part of the brake bolts, before replacing them. Using the torque wrench, torque the caliper bolts to the manufacturer's specifications.