how to turn drum brakes to disc

How to Convert Drum Brakes to Disc Brakes A Step-by-Step Guide

Drum brakes have served many vehicles faithfully for decades, but as automotive technology has advanced, disc brakes have emerged as the superior option for safety and performance. If you're considering upgrading your vehicle's braking system, converting from drum brakes to disc brakes can provide enhanced stopping power, better heat dissipation, and improved overall handling. This guide will walk you through the essential steps of making the conversion.

Understanding the Differences

Before diving into the conversion process, it’s crucial to understand the differences between drum brakes and disc brakes. Drum brakes consist of a drum that rotates with the wheel, while brake shoes press outward against the drum to create friction. In contrast, disc brakes use a disc (or rotor) that is clamped by brake pads to slow the vehicle. The latter design typically offers better performance under high heat and is less prone to fading.

Assessing Your Vehicle

The first step in your conversion is to assess your vehicle's compatibility. Most modern vehicles can accommodate disc brake upgrades, but older models might require more extensive modifications. Research your vehicle's make and model to find out what components are available for the conversion.

Gathering the Necessary Parts

Once you've determined that your vehicle can support disc brakes, gather the required parts. You will typically need

1. Disc brake conversion kit This kit usually includes rotors, calipers, brake pads, and brackets. 2. New wheel bearings Since you'll be installing new rotors, it's recommended to replace the bearings as well. 3. Brake hoses Ensure you have high-quality hoses that can accommodate the new calipers. 4. Master cylinder Some conversions may require a larger master cylinder to accommodate the increased fluid volume needed for disc brakes. 5. Brake fluid Purchase high-quality brake fluid suitable for your vehicle.

Preparing Your Vehicle

Before beginning the installation, ensure that you have all the tools necessary for the job, including a jack, jack stands, wrenches, and a torque wrench. Start by safely lifting your vehicle and removing the wheels to access the drum brakes.

1. Remove the drum Take off the drum assembly by unbolting any retaining screws and gently sliding it off the wheel hub. 2. Detach the backing plate Unbolt the drum brake backing plate from the axle housing, being careful not to damage any other components. 3. Remove brake shoes and hardware Carefully detach the brake shoes along with their associated hardware, ensuring you take note of how they are assembled for future reference.

Installing the Disc Brake Components

1. Attach the new backing plate (if required) Some conversion kits come with new backing plates. Install these first, making sure they are securely fastened. 2. Install the rotors Slide the rotors onto the wheel hub, ensuring they sit flush. Secure them with the appropriate bolts.

3. Mount the calipers Attach the new calipers to the backing plate or axle housing. Make sure they are positioned correctly for optimal brake pad contact.

4. Install brake pads Slide the new brake pads into the calipers, ensuring they fit snugly against the rotors.

5. Connect the brake lines Use your new brake hoses to connect the calipers to the vehicle’s brake system. Ensure all connections are tight to prevent leaks.

Bleeding the Brakes

After everything is securely in place, it’s time to bleed the brakes to remove any air from the system. Start by filling the master cylinder with brake fluid. Then, using the two-person method or a one-person brake bleeder tool, pump the brake pedal while someone opens and closes the bleeder valve on the caliper. Repeat this for each wheel until the fluid runs clear and consistently without bubbles.

Final Checks

Once the brakes are bled and everything is connected, reattach your wheels and lower the vehicle. Before taking your vehicle for a test drive, check all brake connections, ensure that the calipers are functioning appropriately, and top off the brake fluid as necessary.

Conclusion

Converting from drum brakes to disc brakes can significantly enhance your vehicle’s braking performance, making it safer and more responsive. While the process requires some mechanical knowledge and attention to detail, the benefits are well worth the effort. Always remember to follow safety precautions, consult service manuals for specific instructions related to your vehicle, and consider professional assistance if needed. Happy driving!