How to Change Brake Drums to Discs A Comprehensive Guide

The braking system of a vehicle is crucial for safety and performance, and upgrading from drum brakes to disc brakes is a common modification among car enthusiasts and those looking to improve their vehicle's stopping power. This article provides a detailed guide on how to change brake drums to discs, enhancing the overall driving experience.

Why Upgrade to Disc Brakes?

Before diving into the conversion process, it's essential to understand why many drivers opt for disc brakes. Disc brakes offer several advantages over drum brakes

1. Improved Performance Disc brakes provide better stopping power and heat dissipation, reducing the risk of brake fade during heavy use. 2. Better Wet Performance Disc brakes perform better in wet conditions because they shed water more effectively, maintaining better contact with the pads. 3. Easier Maintenance Disc brakes are easier to inspect and service compared to drum brakes, which can be more complex to disassemble.

Tools and Materials Needed

Before embarking on the conversion, gather the following tools and materials

- Jack and jack stands - Lug wrench - Socket set - Brake caliper and rotor kit - New brake lines (if necessary) - Brake pads - Torque wrench - Brake fluid - Anti-seize compound - Safety glasses and gloves

Step-by-Step Guide

1. Prepare Your Vehicle - Park your vehicle on a level surface and engage the parking brake. - Loosen the lug nuts on the wheels that you will be working on, but do not remove them yet.

2. Lift the Vehicle - Use a jack to lift the car off the ground, then install jack stands for safety. Make sure the vehicle is secure before proceeding.

3. Remove the Wheels - Take off the lug nuts and remove the wheels to access the brake components.

4. Remove the Drum Brakes - For each wheel, remove the brake drum by taking off the retaining screws (if applicable) and pulling the drum straight off. If it’s stuck, try gently tapping it with a rubber mallet.

5. Disassemble the Drum Brake Components - Take note of how the drum brake assembly is set up, as this will help during disassembly. Remove the brake shoes, springs, and other components.

6. Install the Disc Brake Kit - Follow the instructions in your disc brake kit for installation. Typically, this will require mounting the caliper bracket on the spindle where the drum brake assembly was located. - Install the new rotors on the hub, ensuring they are seated properly. If your kit includes shims or spacers, ensure they are used as directed.

7. Install Brake Calipers - Attach the brake calipers to the mounting brackets. Make sure to adjust any brake lines as necessary and install new ones if your kit requires it.

8. Install Brake Pads - Insert the brake pads into the calipers, ensuring they are seated correctly against the rotor. Make sure to apply anti-seize compound where necessary to prevent future sticking.

9. Reassemble and Connect - Reconnect any brake lines, ensuring there are no leaks. Double-check all connections and fittings.

10. Bleed the Brakes - It’s crucial to bleed the braking system to remove any air trapped in the lines. This process usually involves opening the bleeder valve on the caliper and having an assistant pump the brake pedal.

11. Test the System - Before driving, ensure everything is secure. Start the vehicle and pump the brakes a few times to ensure proper function. Check brake fluid levels and top off if necessary.

12. Reattach the Wheels - Place the wheels back on, hand-tighten the lug nuts, then lower the vehicle. After lowering, use a torque wrench to tighten the lug nuts to the manufacturer’s specified torque.

Final Thoughts

Upgrading from drum brakes to disc brakes can significantly enhance your vehicle’s braking performance and safety. While this process requires some mechanical skills and tools, it is manageable for those who are dedicated. Always consult your vehicle’s service manual for specific instructions and safety tips. Remember, if at any point you feel uncertain, it’s wise to consult or hire a professional mechanic to ensure the job is done safely and correctly.