How to Change Brake Drums to Rotors A Step-by-Step Guide

Changing brake drums to rotors is a common upgrade among vehicle enthusiasts and mechanics alike. This transition often improves braking performance and provides a more consistent pedal feel. If you're considering making this switch on your vehicle, here’s a detailed guide to help you through the process.

Understanding the Basics

Before diving into the steps, it's crucial to understand the key differences between brake drums and rotors. Brake drums are typically used in drum brake systems, where the brake shoes press against the inside of the drum to slow down the vehicle. In contrast, rotors are part of a disc braking system, where brake pads clamp onto the rotor to create friction and stop the car. Generally, disc brake systems offer better cooling, decreased brake fade, and improved performance, especially under heavy use.

Tools and Materials Needed

Before starting the conversion, ensure you have the following tools and materials

- Jack and jack stands - Lug wrench - Brake cleaner - New rotors - New brake pads - Brake fluid - Wrench set - Screwdriver - Brake line disconnect tool (if necessary)

Step 1 Safety First

Begin by ensuring your vehicle is parked on a flat surface. Engage the parking brake and wear safety glasses. Using the lug wrench, slightly loosen the lug nuts on the rear wheels (if you’re working on the rear brakes).

Step 2 Lift the Vehicle

Use a jack to lift the vehicle off the ground and secure it with jack stands. Make sure it is stable before proceeding. Remove the lug nuts completely and take off the wheels.

Step 3 Remove the Brake Drums

Locate the brake drum. There may be screws holding the drum in place; if so, remove these with your screwdriver. Gently pull the drum away from the wheel hub. If it’s stuck, you might need to tap it gently with a hammer. It’s also a good idea to inspect the brake shoes and springs at this point, as you might want to replace them if they show signs of wear.

Step 4 Install the New Rotors

Once the drums are off, clean the hub surface with brake cleaner to remove any dust or debris. Next, install the new rotors on the hub, ensuring they are aligned correctly. If your vehicle has a backing plate or dust shield, make sure it's correctly positioned before installing the rotor.

Step 5 Add Brake Pads

After installing the rotors, it's time to add the brake pads. The installation process might vary depending on your vehicle, but typically you’ll need to compress the caliper if you're using a rear disc brake setup. This can be done using a brake caliper tool. Place the new brake pads into the caliper bracket, ensuring they are adequately positioned.

Step 6 Reinstall the Caliper

Once the pads are in place, carefully reposition the brake caliper over the rotor and secure it with the bolts. Ensure everything is tightened according to your vehicle's specifications to avoid any loose parts while driving.

Step 7 Reassemble the Wheel and Lower the Vehicle

With the caliper in place and secured, it’s time to reinstall the wheel. Place the wheel over the rotor and hand-tighten the lug nuts. Lower the vehicle back onto the ground using the jack and then torque the lug nuts to the manufacturer’s specifications.

Step 8 Bleed the Brakes and Test

After the wheels are back on, check the brake fluid level in the master cylinder and top it off if necessary. It’s vital to bleed the brakes to remove any air that might have entered the brake lines during the process. Follow the appropriate procedure for your vehicle. Finally, take your vehicle for a short test drive to check for proper brake function and listen for any unusual noises.

Conclusion

Changing brake drums to rotors can significantly enhance your vehicle’s braking performance. While the process requires some mechanical knowledge, proper tools, and patience, it can be a rewarding DIY project. Always prioritize safety and consult your vehicle’s manual for specific instructions related to your model. With the right preparation, you’ll enjoy improved stopping power and reliability on the road.