how to get a stuck rear brake drum off

How to Get a Stuck Rear Brake Drum Off

Removing a stuck rear brake drum can be a challenging task, but with the right techniques and tools, you can successfully free it. Brake drums are crucial components of the braking system in many vehicles, but they can become rusted or corroded over time, making removal difficult. Here’s a guide to help you safely and effectively remove a stuck rear brake drum.

Understanding the Brake Drum Assembly

Before attempting to remove a stuck brake drum, it's essential to understand how the assembly works. The brake drum fits over the brake shoes, which are mounted on the backing plate. When the brake pedal is pressed, hydraulic pressure forces the shoes outward against the drum, creating friction to slow down the vehicle.

Due to factors like moisture, rust, or debris buildup, the brake shoes can become stuck to the inside of the drum, preventing removal. Additionally, if the shoes are worn, they may expand and grip the drum even tighter.

Tools You Will Need

To remove a stuck brake drum, gather the following tools

1. Jack and Jack Stands To safely lift and secure the vehicle. 2. Lug Wrench For removing the wheel. 3. Brake Drum Puller A specialized tool designed to pull off brake drums. 4. Hammer A mallet or sledgehammer can help break loose the drum. 5. Pry Bar For leveraging the drum away from the hub. 6. Penetrating Oil Such as WD-40, to lubricate and help loosen rust. 7. Safety Goggles and Gloves To protect yourself while working.

Step-by-Step Guide to Removing a Stuck Rear Brake Drum

1. Safety First

Before starting, ensure the vehicle is parked on a level surface, engage the parking brake, and wear safety goggles and gloves to protect against debris.

2. Remove the Wheel

Using the lug wrench, loosen and remove the lug nuts from the rear wheel. After removing the nuts, lift the vehicle with a jack and support it securely with jack stands. Removing the wheel will expose the brake drum.

3. Inspect the Drum and Shoes

Before attempting to remove the drum, visually inspect it for obvious signs of damage or rust. If the shoes are worn down significantly, it could be why the drum is stuck.

4. Apply Penetrating Oil

Spray a generous amount of penetrating oil around the edges where the drum meets the axle hub. Allow the oil to soak in for about 10-15 minutes. This will help to loosen any corrosion that may be holding the drum in place.

5. Use a Hammer

If the soaking doesn’t do the trick, take a hammer and gently tap on the edge of the drum. The goal is to break the corrosion seal. Be careful not to hit too hard, as this could damage the drum or other components. Always strike at the edge rather than the face of the drum to prevent distortion.

6. Leverage with a Pry Bar

If the drum still won’t budge, insert a pry bar between the drum and the backing plate. Carefully apply leverage to gently pry the drum away from the hub. Move the pry bar around the drum to distribute the force evenly, which can help loosen it.

7. Use a Brake Drum Puller

If the drum remains stuck, consider using a brake drum puller. Attach the puller according to the manufacturer's instructions. As you tighten the puller's central screw, it will exert pressure on the drum, gradually pulling it off the hub.

8. Check for Additional Issues

Once the drum is off, inspect the brake shoes, springs, and wheel cylinder for wear. Replace any damaged parts before reinstalling the drum. If you had difficulty removing the drum due to rust or damage, consider replacing the drum along with other worn components.

Conclusion

Removing a stuck rear brake drum may require patience and persistence, but with the right tools and techniques, you can accomplish the task safely. Always prioritize safety by securely supporting the vehicle and wearing protective gear. If, after several attempts, the drum remains stuck, consider seeking professional assistance. Proper maintenance and inspection of brake components can help prevent future issues and ensure your vehicle's braking system operates effectively.