how to change from drum brakes to disc

How to Change from Drum Brakes to Disc Brakes

Switching from drum brakes to disc brakes can significantly enhance your vehicle's braking performance. Whether you're looking to upgrade for improved safety, handling, or performance, converting to disc brakes is often worth the investment. Here’s a step-by-step guide on how to make this transition.

Understanding Drum vs. Disc Brakes

Before diving into the conversion process, it’s crucial to understand the key differences between drum brakes and disc brakes. Drum brakes consist of a cylindrical drum that rotates with the wheel, with shoes that expand against the inner surface to create friction. In contrast, disc brakes utilize a rotor (disc) that spins along with the wheel, where brake pads press against the rotor to reduce speed. Disc brakes tend to offer better heat dissipation, shorter stopping distances, and improved performance in wet conditions.

Tools and Materials Needed

Before starting the conversion, gather the following tools and materials

1. Tools - Socket set - Wrench set - Screwdrivers - Brake line wrench - Jack and jack stands - Brake cleaner - Torque wrench

2. Materials - Disc brake conversion kit (includes rotors, calipers, and pads) - New brake lines or hoses - Brake fluid - Optional New wheel bearings and seals

Step-by-Step Conversion Process

1. Safety First Ensure your vehicle is parked on a flat surface, engage the parking brake, and wear appropriate safety gear. Disconnect the battery to prevent any electrical issues.

2. Remove the Wheels Using a lug wrench, loosen the lug nuts and then jack up the vehicle. Secure it with jack stands before fully removing the wheels to access the brake components.

3. Remove the Drum Brakes - Start by removing the brake drum. If it's stuck, tapping it lightly with a hammer might help free it. - Next, detach the brake shoes, springs, and any other components. Keep track of how everything is put together for future reference.

4. Install the Disc Brake Components - Begin by mounting the new brake brackets onto the rear axle or front spindle, depending on where you are converting the brakes. - Attach the disc rotors to the wheel hubs. Ensure they are securely fastened. - Install the calipers next. Follow the instructions provided in your conversion kit to ensure they are installed properly and securely.

5. Replace Brake Lines - Given that drum brakes and disc brakes often require different brake line setups, check your brake lines. Replace them as necessary to accommodate the new calipers. Make sure to use the correct fittings and ensure that they are tightly secured to prevent leaks.

6. Bleed the Brakes - Once everything is mounted, you'll need to bleed the brake system to remove any air trapped in the lines. Start with the caliper furthest from the master cylinder and work your way to the nearest one. Use a brake bleeder kit or have someone assist you by pressing the brake pedal as you open and close the bleeder valves.

7. Check and Fill Brake Fluid - Ensure the brake fluid reservoir is filled to the appropriate level with fresh brake fluid. Double-check for any leaks around the fittings and connections.

8. Reinstall the Wheels Once the brakes are bled and you've confirmed everything is secure, put the wheels back on. Tighten the lug nuts in a star pattern to ensure they are properly fastened.

9. Test Drive After completing the conversion, take your vehicle for a slow test drive to ensure everything is functioning correctly. Pay attention to the feel of the brakes, checking for any unusual noises or behaviors.

Conclusion

Converting from drum brakes to disc brakes is a rewarding upgrade that can provide notable improvements in safety and performance. While the process may seem daunting, following the proper steps and ensuring all components are correctly installed will lead to a successful transition. Always consult a professional mechanic if you feel uncertain at any stage. With your new disc brakes, enjoy enhanced stopping power and a safer driving experience!