What is how to change brake pads?

Okay, here's some information about changing brake pads, formatted in Markdown with linked key concepts:

Changing Brake Pads: A Beginner's Guide

Changing your own brake pads can save you money, but it's crucial to do it safely and correctly. If you're not comfortable working on your car's brakes, seek professional help. Brakes are critical safety components!

Disclaimer: This guide provides general information. Always refer to your vehicle's specific repair manual for detailed instructions and torque specifications.

1. Preparation and Safety

2. Removing the Old Brake Pads

  • Loosen Lug Nuts: Before jacking up the car, loosen the lug nuts on the wheel you'll be working on.

  • Jack Up the Car and Secure it: Use the jack to raise the vehicle and securely place it on jack stands. Never work under a car supported only by a jack!

  • Remove the Wheel: Fully remove the lug nuts and take off the wheel.

  • Inspect the Brake System: Examine the brake rotor, caliper, and brake lines for damage or leaks. If you see anything concerning, consult a professional.

  • Remove the Caliper: Locate the bolts that hold the caliper in place. Remove them. You might need to use penetrating oil if they are stuck. Once the bolts are removed, carefully slide the caliper off the brake rotor. Be careful not to damage the brake line! Support the caliper so that it's not hanging by the brake line.

  • Remove the Old Pads: The old brake pads should now be accessible. They may slide out or be held in place by clips or retaining hardware. Note how the pads are installed; you'll need to install the new ones the same way.

3. Installing the New Brake Pads

  • Clean and Lubricate: Clean the caliper bracket with a wire brush. Apply a thin layer of brake lubricant to the areas where the brake pads will slide.

  • Retract the Caliper Piston: Use a C-clamp or brake spreader tool to slowly push the caliper piston back into its bore. This makes room for the new, thicker brake pads. Be careful not to damage the piston or the caliper. Sometimes, the bleeder valve on the caliper needs to be opened to help with this process.

  • Install the New Pads: Install the new brake pads into the caliper bracket, making sure they are seated correctly. Use the same clips or retaining hardware that were used with the old pads.

  • Reinstall the Caliper: Carefully slide the caliper back over the brake rotor and align it with the mounting holes. Reinstall the caliper bolts and tighten them to the manufacturer's specified torque using a torque wrench.

4. Finishing Up

  • Reinstall the Wheel: Put the wheel back on, tighten the lug nuts by hand, and then lower the vehicle to the ground.

  • Torque Lug Nuts: Use a torque wrench to tighten the lug nuts to the manufacturer's specified torque.

  • Pump the Brakes: Before driving, pump the brake pedal several times to restore brake pressure. The pedal may initially feel soft.

  • Bedding In the Brakes: Follow the brake pad manufacturer's instructions for bedding in the new brake pads. This typically involves a series of controlled stops to transfer brake pad material to the brake rotor surface.

  • Check the Brake Fluid: After changing your brake pads, check the brake fluid level and top it off if necessary.