How to Change Brake Drums to Rotors A Comprehensive Guide

Upgrading your vehicle's braking system from drums to rotors can improve performance and safety. Disc brakes generally offer better heat dissipation, improved braking power, and a more responsive feel. This guide will help you understand the process of changing brake drums to rotors step-by-step.

Understanding Brake Systems

Before diving into the conversion process, it’s essential to understand the fundamental differences between drum and rotor brakes. Drum brakes use a set of brake shoes that press against the inner surface of a drum to create friction, slowing down the wheel. In contrast, disc brakes consist of a rotor that spins with the wheel and brake calipers that squeeze brake pads against the rotor to create friction.

Tools and Materials Needed

Before starting the conversion process, gather the following tools and materials

- Jack and jack stands - Lug wrench - Brake cleaner - Ratchet and socket set - Torque wrench - New brake rotors - Brake pads - Brake calipers (if replacing) - Brake fluid - Anti-seize lubricant - Safety goggles and gloves

Step-by-Step Process

1. Prepare the Vehicle

Start by parking your vehicle on a level surface and engaging the parking brake for safety. Use a lug wrench to loosen the lug nuts slightly while the wheels are still on the ground. Next, lift the vehicle using a jack and secure it with jack stands. Remove the wheels to expose the drum brakes.

2. Remove the Brake Drums

After removing the wheels, you will see the brake drums. Take a moment to inspect the condition of the drum and the internal components. To remove the drum, locate the retaining screws or any clips securing it, and remove them. Gently slide the drum off the hub. If the drum is stuck due to rust or debris, tap it lightly with a hammer to loosen it.

3. Remove the Brake Components

With the drum removed, you can now access the internal brake components. Carefully take out the brake shoes, springs, and any other hardware. Keep track of how these components are assembled, as you will need to install new parts indicative of a disc brake system.

4. Install New Brake Rotors and Components

With the drum brakes now removed, you’ll want to install the new brake rotor. Depending on your vehicle, there may be a rotor backing plate that you’ll need to install. Slide the rotor onto the hub and secure it in place with the provided hardware.

Next, install the new brake calipers. If you’re using new calipers, ensure they are properly tightened according to the manufacturer’s specifications. Install new brake pads into the caliper brackets, ensuring they align correctly with the rotor.

5. Connect Brake Lines and Calipers

Once everything is in place, it’s time to connect the brake lines to the new calipers. Make sure to use the recommended brake fluid for your vehicle, and check for any leaks after assembly. Bleed the brake system to remove air bubbles, which can be done by having someone pump the brake pedal while you open and close the bleeder valve on the caliper.

6. Reinstall the Wheels

After confirming that the calipers and brake lines are securely attached, it’s time to put the wheels back on. Carefully place the wheels onto the hubs and hand-tighten the lug nuts. Lower the vehicle back to the ground and use a torque wrench to tighten the lug nuts to the manufacturer’s specifications.

7. Test Your New Brake System

Before you hit the road, it’s crucial to test the brakes in a safe, controlled environment. Start the vehicle and pump the brake pedal a few times to ensure the pads make proper contact with the rotors. Check for any unusual noises or vibrations while driving at a low speed to confirm the installation was successful.

Conclusion

Switching from drum brakes to disc brakes may seem daunting, but it can significantly enhance your vehicle's braking performance. By following these steps and ensuring proper installation, you can enjoy improved safety and handling. Remember to consult your vehicle's service manual for specific instructions and safety precautions. If you’re unsure about any part of the process, don’t hesitate to reach out to a professional mechanic. Happy driving!