replacing rear drum brakes

Replacing Rear Drum Brakes A Comprehensive Guide

When it comes to vehicle maintenance, one of the most important yet often overlooked components is the braking system. In particular, rear drum brakes require periodic inspection and replacement to ensure safe and efficient driving. Unlike disc brakes, which have gained popularity in recent years, drum brakes are still commonly used in many vehicles, especially those with smaller frames or lighter loads. This article provides a comprehensive guide on how to replace rear drum brakes, ensuring that you can perform this task confidently and effectively.

Understanding Rear Drum Brakes

Rear drum brakes consist of a brake drum, brake shoes, wheel cylinder, and various springs and retainers. When you apply the brakes, hydraulic pressure from the brake fluid forces the wheel cylinder to push the brake shoes against the drum, creating friction that slows down or stops the vehicle. Over time, the brake shoes wear down, the drum can become scored, and the springs may lose tension, all necessitating replacement.

Tools and Materials Needed

Before you begin the replacement process, gather all the necessary tools and materials. You will need

- A jack and jack stands - A lug wrench - A brake drum puller (if necessary) - Screwdrivers (flathead and Phillips) - Pliers - A brake shoe removal tool - New brake shoes - New brake drums (if necessary) - Brake cleaner - Lubricant (for the rear brake components) - Safety goggles and gloves

Step-by-Step Process

1. Preparation and Safety First Ensure your vehicle is parked on a flat surface, engage the parking brake, and wear safety goggles and gloves for protection.

2. Loosen the Lug Nuts Use the lug wrench to slightly loosen the lug nuts on the rear wheel before raising the vehicle.

3. Lift the Vehicle Utilize the jack to lift the vehicle, then secure it with jack stands for added safety.

4. Remove the Wheel Once the vehicle is stable, completely remove the lug nuts and take off the rear wheel to expose the drum brake assembly.

5. Remove the Brake Drum If the drum doesn’t easily slide off, you may need to use a brake drum puller. Inspect the drum for any significant wear or scoring, as you may need to replace it.

6. Inspect the Components With the drum off, inspect the brake shoes, springs, and wheel cylinder for wear or damage. If the shoes are worn down to the indicator, or if there is leaking fluid from the wheel cylinder, replacements are necessary.

7. Remove Old Brake Shoes Use the brake shoe removal tool and pliers to take off the old brake shoes. Pay close attention to the arrangement of springs and other components, as you will need to replicate this when installing the new shoes.

8. Install New Brake Shoes Position the new brake shoes in their place, securing them with the appropriate springs and components, replicating the arrangement of the old setup.

9. Clean and Inspect the Brake Drum Before reinstalling the drum, use brake cleaner to clean the surface and inspect it for any imperfections. If replacement is needed, install the new drum.

10. Reassemble the Wheel Replace the wheel, tighten the lug nuts by hand, and lower the vehicle. Once it's on the ground, use the lug wrench to tighten the nuts in a crisscross pattern for even distribution.

11. Test the Brakes Before hitting the road, pump the brake pedal a few times to ensure the brake shoes seat properly against the drum. Then, take the car for a short drive to test the brakes.

Conclusion

Replacing rear drum brakes can seem daunting, but with the right tools and careful attention to detail, it’s a manageable DIY task. By ensuring your brakes are in optimal condition, you enhance your vehicle’s safety and performance. Regular maintenance and timely replacement of brake components will lead to a smoother driving experience and peace of mind on the road. Always consult your vehicle’s manual for specific instructions and specifications, and don’t hesitate to seek professional help if you’re unsure about any part of the process.