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How do you get piston in front and rear brake caliper to retract back into the so can change pads on a 2004 Crown Victoria?

To retract the piston in the front and rear brake caliper of a 2004 Crown Victoria, you will need a tool called a brake caliper compression tool. This tool is designed to safely and effectively retract the piston, allowing you to change the brake pads. Here's a step-by-step guide on how to use a brake caliper compression tool:

Tools and Materials:

- Brake caliper compression tool

- C-clamp or woodworking clamp

- Flathead screwdriver

- Brake cleaner

- New brake pads

Procedure:

1. Prepare the Vehicle:

- Engage the parking brake to keep the vehicle from rolling.

- Chock the wheels to ensure the vehicle is stable and won't move while you're working.

- Jack up the vehicle and support it securely using jack stands.

- Remove the lug nuts and take off the wheel to access the brake caliper.

2. Locate the Brake Caliper:

- The brake caliper is the housing that encloses the brake pads and piston. It's typically located on the back side of the wheel hub.

3. Remove the Caliper:

- Use a socket wrench to loosen and remove the bolts holding the brake caliper in place. Be careful not to damage the brake line.

- Once the bolts are removed, gently lift the caliper off the brake rotor. Be mindful of the brake fluid that may leak out.

4. Compress the Piston:

- Place the brake caliper compression tool over the piston. Make sure the tool is properly aligned with the piston.

- Use a C-clamp or woodworking clamp to turn the compression tool clockwise. This will gradually retract the piston back into the caliper.

- Continue turning the compression tool until the piston is fully retracted and you can easily insert the new brake pads.

5. Clean the Caliper:

- Inspect the caliper for any dirt, debris, or corrosion.

- Use a flathead screwdriver to carefully remove any stuck debris from the caliper.

- Spray the caliper with brake cleaner to thoroughly clean it. Ensure the cleaner evaporates completely before proceeding.

6. Install New Brake Pads:

- Take the new brake pads and position them in the caliper. Make sure the pads are properly seated in place.

- If necessary, use a small amount of brake grease on the back of the pads to prevent squeaking.

7. Reattach the Caliper:

- Carefully align the caliper over the brake rotor and slide it back into position.

- Secure the caliper with the bolts you removed earlier. Tighten the bolts snugly but do not overtighten.

8. Test the Brakes:

- Once the caliper is secured, slowly lower the vehicle off the jack stands.

- Gently press on the brake pedal several times to ensure the pads are properly engaged and the brakes are functioning correctly.

Note:

- Always check your vehicle's owner's manual for specific instructions and safety guidelines related to brake caliper maintenance.

- If you're uncomfortable performing this procedure, it's best to take your vehicle to a qualified mechanic.