how to remove rust from drum brakes

How to Remove Rust from Drum Brakes

Rust on drum brakes is not just an aesthetic issue; it can significantly impact the performance and safety of your vehicle. Over time, moisture and exposure to the elements can cause brake drums to corrode, leading to potential braking inefficiencies and increased wear on components. Fortunately, removing rust from drum brakes is a manageable task that can be accomplished with a few tools and some patience. Here’s a step-by-step guide to help you restore your drum brakes to optimal condition.

Tools and Materials Needed

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

- Jack and jack stands - Lug wrench - Brake cleaner - Wire brush or sandpaper (preferably 80-120 grit) - Rust converter or rust-inhibiting primer - Paint (optional, for rust prevention) - Safety goggles and gloves - Clean rags or shop towels

Step-By-Step Guide

Step 1 Safety First

Before you get started, park your vehicle on a flat surface and engage the parking brake. Wear safety goggles and gloves to protect yourself from dust and debris, and make sure you have a clear work area.

Step 2 Raise the Vehicle

Using a jack, lift the vehicle and secure it with jack stands. Loosen the lug nuts on the wheel covering the drum brake you wish to work on. Remove the wheel to expose the brake drum.

Once the wheel is off, inspect the brake components for rust. Look for significant corrosion on the drum itself, as well as on the shoes, springs, and other hardware. Determine the extent of rust to decide if any parts need replacement.

Step 4 Clean the Rusty Areas

Using a wire brush or sandpaper, gently scrub the rusty areas of the brake drum. Be cautious not to damage the surface too much, as this can affect braking performance. If the rust is superficial, this should adequately clean the surface and prepare it for treatment.

Step 5 Apply Brake Cleaner

After scrubbing, spray the area with brake cleaner to remove debris and dust created during the cleaning process. Allow the cleaner to dry completely before proceeding.

Step 6 Treat the Rust

If you have significant rust, consider applying a rust converter. This product chemically transforms rust into a stabilized compound and prevents further corrosion. Follow the manufacturer's instructions on application and drying times.

You can also apply a rust-inhibiting primer afterward to provide an extra layer of protection. This is particularly beneficial if you live in an area with high humidity or road salt exposure.

Step 7 Reassemble the Drum Brake

Once the rust treatment has fully dried, reassemble any parts you removed. Ensure everything is secured correctly and that all components are in good working order. If any parts are excessively worn or damaged, replace them before reassembly.

Step 8 Reinstall the Wheel

Place the wheel back on the hub and hand-tighten the lug nuts. Lower the vehicle back to the ground and use the lug wrench to securely tighten the lug nuts in a star pattern to ensure even torque.

Step 9 Test the Brakes

Before hitting the road, pump the brake pedal a few times to ensure that the brake shoes make proper contact with the drum. Take your vehicle for a test drive to assess braking performance.

Conclusion

Removing rust from drum brakes is an essential maintenance task that can enhance your vehicle's performance and extend the life of its brake system. Regular inspections and cleanings are vital to prevent rust from becoming a significant issue. By following the steps outlined in this guide, you can ensure your drum brakes are in top shape, ready to provide you with safe and reliable stopping power. Always remember, if you’re uncomfortable performing any maintenance, it’s wise to seek assistance from a professional mechanic.