When overhauling is recommended because of leakage, then it is advisable to replace the calipers instead of doing overhaul. New and factory rebuilt units are procurable on an exchange basis; therefore, this job is rather simple. It is very important to always calipers in pairs; one must never replace one calipers while the other remains in use. After deactivating the wheel, unbolt the front or rear wheel lug nuts and support the car on jackstands then block the other ends of the wheel and then remove the calipers. Then, you have to take out the bent shaft and banjo bolt, and caliper lower mounting bolt, then you have to detach the brake hose from the caliper, discarding the sealing washers and replacing them with new ones. To get rid of undesirable debris and possibly reduce brake fluid loss, cap the brake hose. Next, take off caliper mounting bolts and take out the caliper from its position on the bracket. To install it, do the opposite of what you did during the removal of the part; ensure that you tighten the caliper mounting bolt and the wheel lug nuts to the stipulated torque recommended, and ensure you replace the sealing washers of the brake hose to the caliper banjo bolt. Last but not the least, it is time to release the brake fluid, check for leakages through the hose connectors and then test the brakes with all the caution before getting the vehicle back in normal service.