Calipers are made to survive for a very long time. However, unforeseen circumstances can ultimately damage the component and necessitate a replacement. Changing rear calipers, while an easy task, is quite time consuming so make sure that everything needed for the project have been purchased and gathered in one place to avoid unnecessary delays. Not all cars have the same brake assembly so it would be wise to have your vehicle's manual with you as reference.
- Loosen the rear wheels in preparation for removal. Initially loosen the lug nuts just enough that they can be removed with ease once the car rear is raised up.
- Prop your car's rear up using a jack. Hoist the car rear up using a jack. Make sure that you have the automobile supported with at least two sturdy base jacks to avoid accidents.
- Unscrew the lug nuts completely from the wheels. With the car raised securely up, finally remove the lug nuts and wiggle the wheel out. It would be good to start with the right rear wheel first. Another thing, delay the removal of the left rear wheel so that you have something to refer to in case you get confused with the re-assembly later. You should now be looking at the brake assembly now that you've uninstalled the wheel.
- Remove the caliper from the brake assembly. Working on the brake assembly will inevitably result in leaking fluid so it is good to have a metal basin catch positioned under the brake fluid reservoir. Locate the metal clip holding the caliper on the side of the brake assembly. Push the clip downwards and pry it loose from the setup. Unscrew the banjo bolt hooking the caliper onto the brake line. Afterwards, remove the two rubber caps on the caliper ends to expose the Allen bolts holding the caliper to the whole setup. Simply unscrew these using the appropriate tools to finally free the caliper from its position.
- Replace the worn out components with fresh ones. Remove the pads found inside the caliper and substitute with new ones. Make sure that the pistons are securely held down with clamps while doing the replacement. Once done, slide the contraption back into the rotor and screw the bolts back in place. Install the brake line once more by reattaching the banjo bolt. With the brake assembly put everything back together, bleed the brakes to ensure that no air compromises the brake system.
Now that you've finished changing the rear calipers, all you need to do is put the tires back on. It would be good to drive your car slowly around the block to check if your weekend project was a success. This way, you get to address problems immediately and avoid getting into accidents.