how to remove rust from drum brakes

How to Remove Rust from Drum Brakes

Rust can be a significant issue for drum brakes, impacting their performance and longevity. Drum brakes operate on a completely different principle compared to disc brakes, involving brake shoes that press against the inside of a drum to create friction. Over time, exposure to moisture, road salt, and other environmental factors can lead to rust formation, potentially compromising the functionality of your vehicle's braking system. If you notice rust on your drum brakes, this guide will help you safely and effectively remove it.

Safety Precautions

Before attempting to remove rust from your drum brakes, make sure to take the necessary safety precautions. Here’s a checklist

1. Park on a level surface Ensure your vehicle is on a flat surface to prevent rolling. 2. Use protective gear Wear gloves, safety glasses, and a mask to protect yourself from dust and rust particles. 3. Secure the vehicle Use wheel chocks and jack stands to secure the vehicle if you are lifting it.

Tools and Materials Needed

To effectively remove rust from drum brakes, gather the following tools and materials

- A jack and jack stands - Lug wrench - Wire brush or rust removal tool - Sandpaper (medium and fine grit) - Brake cleaner - Lubricant (like brake grease) - Compressed air (optional) - Safety goggles and gloves

Step-by-Step Guide

1. Prepare the Vehicle Start by parking your vehicle on a flat, stable surface. Engage the parking brake and place wheel chocks around the wheels remaining on the ground. Loosen the lug nuts on the rear wheel(s) but do not remove them yet.

2. Lift the Vehicle Use the jack to lift the vehicle. Once elevated, place jack stands securely underneath the vehicle's chassis.

3. Remove the Wheel Finish removing the lug nuts, and take off the wheel to expose the drum brakes.

4. Inspect the Brakes Check for any severe rust or wear. If the rust is superficial, it can typically be removed; however, if the rust has significantly weakened the drum or shoes, consider replacing them.

5. Clean the Rust Use a wire brush or a rust removal tool to scrub away the rust on the drum surface. Be sure to carefully work at the rust to avoid damaging the brake components. For stubborn rust spots, use medium-grit sandpaper to sand down the area, followed by fine-grit sandpaper for a smoother finish.

6. Use Brake Cleaner Apply brake cleaner to remove any debris, grease, or dust from the area. This step ensures that the new layer of surface is clean and free of contaminants that could hinder brake performance. Wipe the area with a clean cloth.

7. Reassemble the Brake Components If you had to remove any parts, carefully reassemble them after cleaning. Ensure that the brake shoes and springs are intact and functioning correctly.

8. Lubricate Moving Parts Apply a small amount of brake grease to the contact points of the brake shoes. This helps to reduce friction, preventing future rust and ensuring smooth operation.

9. Reattach the Wheel Place the wheel back onto the hub and hand-tighten the lug nuts. Lower the vehicle from the jack stands and then tighten the lug nuts fully in a star pattern to ensure even seating of the wheel.

10. Test the Brakes Before driving, pump the brake pedal a few times to ensure the brake shoes are seated properly. Then, take a short drive to test the brakes and listen for any unusual noises.

Preventing Future Rust

To prevent rust from forming in the future, consider the following tips

- Regularly inspect your brakes, especially in wet climates or salty environments. - Wash your vehicle frequently to remove any road salt or moisture trapped in the wheel wells. - Consider using brake anti-corrosion sprays for extra protection against rust buildup.

By following these steps, you can effectively remove rust from your drum brakes and restore their performance. Regular maintenance, inspection, and care will lead to better braking efficiency and longer life for your vehicle’s braking system. Remember that if rust damage is extensive or you feel uncomfortable performing these steps, seeking professional assistance is always a wise decision.