When replacing calipers, always replace them in pairs (front/front, rear/rear). It is not recommended to change one only. REMOVAL:Raise either front or rear of your vehicle and support it safely on jack stands after loosening the wheel lug nuts. If you are working on the rear brakes, release the parking brake lever at this point. First, take out the disk brake pads. Have a container under the caliper and ready with some rags for any spilt brake fluid that might occur. Take off the brake hose-to-caliper banjo bolt. Then plug this hose so as to avoid contaminants from entering into hydraulic system of brakes as well as prevent fluid from leaking through it. Unscrew and put aside the caliper from its support bracket that holds it in place during braking force application INSTALLATION: Fix in place brake pads/linings facing their friction surface towards each other when assembling them in a caliper assembly or carrier plate used with drum-type drums ,Before fitting the caliper assembly on its own support, clean up both lock pin and guide pin of caliper followed by smearing high-temperature grease onto those pins. Assemble back again a new reconditioned caliper; then connect a brake line if needed to be linked once more to this same unit using fresh seals against washers along with tightening up banjo bolt & calliper bolts tightly enough ,Make sure that you finish bleeding out all air bubbles within entire hydraulic system by progressively pumping pedal until it feels firm under foot.