how to convert drum to disk brakes

How to Convert Drum Brakes to Disc Brakes

Converting your vehicle's braking system from drum brakes to disc brakes can significantly enhance braking performance and safety. Disc brakes tend to dissipate heat better, offer improved stopping power, and require less maintenance over time. This article will guide you through the steps involved in this conversion process, ensuring that you have a clear understanding of what's required.

Understanding the Basics

Before you embark on this project, it's important to understand the primary differences between drum and disc brakes. Drum brakes consist of a set of shoes that press against the inside of a rotating drum to create friction. This system is generally less efficient in dissipating heat, leading to brake fade during heavy use. On the other hand, disc brakes utilize a caliper that grips a disc, providing more effective heat dissipation and more consistent braking performance.

Essential Tools and Parts

To undertake the conversion, you will need several tools and components

1. Tools - Ratchet set and sockets - Wrenches - Screwdrivers - Brake bleeder kit - Hydraulic jack and jack stands - Torque wrench

2. Parts - Disc brake rotors - Calipers (along with mounting brackets, if necessary) - Brake pads - Brake lines (if conversion from drum-specific lines is needed) - Brake fluid

1. Preparation Start by lifting the vehicle using a hydraulic jack and securely placing jack stands underneath. Remove the wheels to gain access to the braking system. If you're working on the rear brakes, the process will involve the rear axle, so ensure that you have the appropriate materials.

2. Remove Drum Brakes Take off the brake drums by unscrewing the retaining screws and sliding the drum off the hub. Carefully remove the drum brakes, including the backing plate, brake shoes, and all related hardware.

3. Install New Components - Mounting Brackets Depending on the vehicle, you might need to install new mounting brackets for the disc brake calipers. Most aftermarket kits provide specific instructions for this. - Rotors and Calipers Attach the new disc brake rotors to the hub. Install the calipers over the rotor, ensuring that they are securely fastened. Use the torque wrench to ensure all bolts are tightened to the manufacturer's specifications. - Brake Pads Place the brake pads into the caliper bracket. Follow your kit's instructions to ensure proper alignment.

4. Brake Lines If your vehicle requires new brake lines to accommodate the disc brake setup, carefully replace them. Use a brake line flaring tool if necessary and ensure all connections are tight and leak-free.

5. Bleed the Brakes Once everything is installed, you need to bleed the brake system to remove any air trapped in the lines. Begin at the wheel furthest from the master cylinder, usually the passenger side rear, and work your way forward. Use a brake bleeder kit or have an assistant pump the brake pedal while you open and close the bleed valve on the caliper.

6. Testing After bleeding the brakes, reattach the wheels and lower the vehicle back to the ground. Before driving, press the brake pedal several times to ensure the pads seat properly against the rotors. Check for any leaks in the brake lines or calipers.

7. Final Inspection Once the system is fully bled and the brakes feel firm, take a test drive in a safe area. Pay attention to how the brakes feel, ensuring they engage smoothly without any unusual sounds or vibrations.

Conclusion

Converting from drum to disc brakes can greatly improve your vehicle's braking performance, offering benefits such as superior heat management and enhanced stopping power. While the process can be somewhat complex, with careful preparation and the right tools, it is achievable for those with basic mechanical skills. Always prioritize safety by wearing appropriate gear and following all guidelines for your vehicle's specific braking system. With patience and precision, you can enjoy the advantages of disc brakes for many miles to come.