how to change from drum to disc brakes

How to Change from Drum to Disc Brakes

Switching from drum brakes to disc brakes is a popular upgrade among car enthusiasts and those looking to improve their vehicle's braking performance. Disc brakes offer several advantages, including better heat dissipation, improved stopping power, and more consistent braking performance. This guide will walk you through the process of making this switch, ensuring you understand the necessary steps and precautions.

Understanding the Components

Before diving into the installation process, it’s essential to understand the components involved in disc braking systems. The primary components include

1. Disc Rotors These are round metal discs attached to the wheel hub. Brake pads clamp onto these rotors to create the friction needed to stop the vehicle. 2. Calipers These are mechanisms that house the brake pads and use hydraulic pressure to clamp them onto the rotors. 3. Brake Pads These are the friction materials that press against the rotor to slow or stop the vehicle.

4. Brake Lines These carry brake fluid to the calipers to create the necessary hydraulic pressure.

5. Mounting Brackets These attach the calipers to the vehicle's suspension system.

Tools and Materials Needed

To complete the conversion from drum to disc brakes, you will need specific tools and parts

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

2. Parts - Disc brake conversion kit (including rotors, calipers, and mounting hardware) - Brake lines (if necessary) - New brake fluid - Brake pads

Step-by-Step Conversion Process

1. Preparation Start by gathering all your tools and parts. Ensure that you work in a well-ventilated space and with adequate lighting.

2. Lift the Vehicle Use the jack to lift the vehicle and secure it with jack stands. Make sure the car is stable before proceeding.

3. Remove the Wheels Take off the lug nuts and remove the wheels to gain access to the drum brakes.

4. Take Off the Drum Brakes Remove the brake drum by unscrewing any retaining screws and gently pulling the drum off. You may need to tap it lightly if it's stuck due to rust or debris.

5. Disconnect the Brake Lines Carefully unscrew the drum brake lines using the brake line wrench. Be prepared for some brake fluid to leak out.

6. Install the Disc Brake Components - Follow the instructions provided with your disc brake conversion kit. Typically, this will involve attaching the mounting brackets to the rear axle. - Install the new rotors onto the wheel hub. - Attach the calipers over the rotors, ensuring they are correctly aligned.

7. Connect the Brake Lines Reconnect the brake lines to the new calipers, ensuring all connections are tight to prevent leaks.

8. Install the Brake Pads Place the brake pads into the calipers, making sure they are positioned correctly against the rotors.

9. Bleed the Brake System To remove any air bubbles from the brake lines, bleed the brakes by having an assistant pump the brake pedal while you open and close the bleeder valves on the calipers.

10. Reinstall the Wheels Once everything is secure, put the wheels back on and tighten the lug nuts.

11. Lower the Vehicle Carefully lower the car back to the ground and double-check that everything is secure.

12. Test Drive Before hitting the road, perform a brief test in a safe area. Gradually test the brakes to ensure they’re functioning correctly.

Conclusion

Converting from drum brakes to disc brakes can significantly enhance your vehicle’s braking capabilities. While this upgrade requires a degree of automotive knowledge and mechanical skills, following these steps can help you accomplish the task safely and effectively. Always prioritize safety and, if in doubt, consult with a professional mechanic to ensure a successful installation. Happy driving!