how to change from drum brakes to disc

How to Change from Drum Brakes to Disc Brakes

Upgrading your vehicle's braking system from drum brakes to disc brakes can significantly enhance its performance, safety, and overall driving experience. Disc brakes offer better heat dissipation, shorter stopping distances, and improved reliability under varying driving conditions. If you're considering this upgrade, here's a step-by-step guide to assist you in the process.

Understanding Drum and Disc Brakes

Drum brakes operate using shoes that press against the inside of a spinning drum to create friction. While effective, they can become less efficient due to heat buildup, especially under heavy braking. On the other hand, disc brakes utilize a rotor that spins with the wheel, and calipers that squeeze brake pads against the rotor, providing superior braking power and performance.

Tools and Materials Needed

Before you begin the upgrade, ensure you have the necessary tools and materials - Socket set - Wrench set - Screwdrivers - Brake cleaner - New disc brake kit (including rotors, calipers, and pads) - Brake fluid - Jack and jack stands - Safety goggles - Gloves

Step-by-Step Guide to the Upgrade

1. Preparation Begin by choosing a safe and flat environment to work on your vehicle. Gather all necessary tools and materials and wear safety gear to protect yourself.

2. Lift the Vehicle Using a jack, lift the vehicle and securely place it on jack stands. Make sure the vehicle is stable before proceeding with your work.

3. Remove the Wheels Take off the lug nuts with a wrench and carefully remove the tires. This will expose the brake assembly.

4. Remove the Drum Brakes Start by removing the brake drum. Depending on your vehicle, this may require removing a retaining clip or screws. Once removed, take out the brake shoes, springs, and other components. Keep the old parts, as you may need them for reference during installation.

5. Install the New Spindle (if required) In some cases, drum brake to disc brake conversion may require a new spindle. Follow the manufacturer's instructions for installation, ensuring that it is securely fitted.

6. Install the Disc Brake Components First, install the new disc brake rotor onto the hub. Make sure it is flush against the spindle. Then, attach the new caliper bracket, ensuring that it is aligned properly with the rotor.

7. Mount the Calipers and Brake Pads Install the new calipers over the rotor. Place the brake pads into the calipers, ensuring a snug fit. Check for any instructions provided with your brake kit, as alignment can vary by model.

8. Connect Brake Lines Carefully connect the brake hoses to the calipers. Make sure to use new copper washers if required, and tighten the connections adequately to prevent leaks.

9. Bleed the Brakes With all components installed, it’s time to bleed the brake system. This process removes air from the brake lines, which can cause sponginess in braking. Start by filling the brake reservoir with fresh brake fluid and have a helper pump the brake pedal while you open and close the bleeder valves on the calipers. Repeat until no air bubbles appear in the fluid.

10. Install the Wheels Once you are satisfied that the brake lines are bled and the system is secure, replace the wheels. Tighten the lug nuts in a crisscross pattern to ensure even pressure.

11. Final Checks Lower the vehicle back to the ground. Before driving, pump the brakes a few times to seat the pads against the rotors. Check for any leaks around the calipers and ensure the brake fluid level is adequate.

12. Test Drive Finally, take the vehicle for a short test drive at low speeds. This will allow you to assess your new braking system. Listen for any unusual sounds and check the braking effectiveness. If everything feels right, you are ready to enjoy the enhanced performance of your new disc brakes.

Conclusion

While converting from drum brakes to disc brakes requires some mechanical knowledge and skill, the benefits far outweigh the complexities. Enhanced stopping power, increased safety, and better overall vehicle performance are just a few of the advantages of making this change. Always refer to your vehicle’s service manual and consider consulting with a professional if you have any doubts about the process.