Steps to Free Jammed Rear Drum Brakes Safely and Effectively

How to Release Seized Rear Drum Brakes

Rear drum brakes are a common braking system used in many vehicles, especially older models. Over time, these brakes can seize due to a variety of factors, including rust, dirt accumulation, moisture, and lack of use. A seized brake can lead to poor vehicle performance, uneven braking, and can even become a safety hazard if not addressed. Fortunately, there are several steps you can take to release seized rear drum brakes and restore your braking system to optimal condition.

Understanding the Problem

Before diving into the process of releasing seized drum brakes, it’s essential to understand why this happens. Drum brakes operate with brake shoes that press against the inner surface of a drum to slow down or stop the vehicle. If these components are exposed to moisture and contaminants, or if the vehicle has been parked for an extended period, the shoes can stick to the drum. This can lead to a situation where the brakes do not release fully, resulting in dragging brakes and increased wear on the braking system.

Tools and Materials Needed

To successfully release seized rear drum brakes, you should have the following tools and materials on hand

- Jack and jack stands - Lug wrench - Brake cleaner - WD-40 or penetrating oil - Hammer or rubber mallet - Screwdriver - Pliers - Safety glasses and gloves

Step-by-Step Guide

1. Safety First

Before commencing any work on your vehicle, ensure you are wearing safety glasses and gloves to protect your eyes and hands from debris and chemicals. Make sure the vehicle is parked on a level surface and engage the parking brake.

2. Raise the Vehicle

Using a jack, lift the rear of the vehicle, and secure it with jack stands. This is crucial for your safety while working underneath the car. Remove the rear wheels using a lug wrench.

3. Inspect the Brake Assembly

Once the wheels are off, visually inspect the brake drums for any visible signs of damage or excessive rust. Check to see if the drum spins freely. If it does not, you will need to address the issue.

4. Apply Penetrating Oil

Spray a penetrating oil like WD-40 around the edges of the brake drum where it meets the brake backing plate. Let it sit for 10-15 minutes. This helps lubricate any rust or grime that may be causing the brake to stick.

5. Tap the Drum

Using a hammer or rubber mallet, gently tap around the edges of the brake drum. This can help break loose any rust or debris that might be causing the drum to seize. Be careful not to damage the drum surface.

6. Rotate the Drum

Attempt to rotate the brake drum while applying pressure. If it doesn’t turn easily, continue applying penetrating oil and tapping until it begins to break free. Sometimes, it requires a bit of patience and repeated efforts to loosen it.

7. Remove the Drum

Once the drum is loose, remove it from the hub. This may require wiggling or rotating it slightly. If it still resists, check to ensure that there are no additional retaining screws or clips holding it in place.

8. Clean and Check Components

With the drum removed, clean the surfaces with brake cleaner to remove any remaining rust, dust, or debris. Inspect the brake shoes and the drum for wear. Replace any components that are worn or damaged.

9. Reassemble and Test

After cleaning and inspecting, reassemble the brake system by putting everything back together in reverse order of removal. Reinstall the wheels and lower the vehicle while ensuring all components are tightened to the manufacturer's specifications.

Finally, test the brakes in a safe environment before driving regularly. Ensure they are functioning correctly and that there are no unusual noises.

Conclusion

Addressing seized rear drum brakes can save you from potential hazards and costly repairs down the line. By following these steps and maintaining your braking system regularly, you can ensure safer driving and a longer lifespan for your vehicle's brake components. If you are uncomfortable performing this maintenance yourself, consider consulting a professional mechanic.