Download 2007 Chevrolet Impala Disc Brakes Removal & Installation – Installation Procedure 1. Bottom the piston into the caliper bore. Use a C-clamp before installing new brake pads in order to compress the piston. Use an old brake pad or wooden block across the face of the piston to avoid damage to the piston or the caliper boot. 2. Install the 2 retainers (1) to the caliper bracket. 3. Install the pads (2) to the caliper bracket. 4. Swing the caliper (3) upward in position around the pads. 5. Lubricate the bolt and the bolt boot. Use silicone grease. 6. Install the upper caliper bolt (2). 7. Remove the wheel lug nut retaining the rotor to the hub. 8. Install the rear tire and the wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels. Align the previous marks on the wheel, hub and bearing. 9. Lower the vehicle. 10. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance. 11. Slowly release the brake pedal. 12. Wait 15 seconds, then repeat steps 10 and 11 until a firm brake pedal is obtained. This will properly seat the brake caliper pistons and brake pads. 13. Fill the brake master cylinder reservoir to the proper level. Refer to Master Cylinder Reservoir Filling in Hydraulic Brakes. 14. Burnish the pads and rotors. Refer to Burnishing Pads and Rotors .