replace rear drum brakes

Replacing Rear Drum Brakes A Comprehensive Guide

Rear drum brakes play a crucial role in a vehicle's stopping power, especially in older cars and some modern models. Understanding when and how to replace these components can save both time and money, enhancing vehicle safety and performance. In this article, we will explore the signs that indicate drum brake replacement, the tools required, and the step-by-step process for performing this critical maintenance task.

Understanding Drum Brake Functionality

Drum brakes operate using a set of shoes that press against the inner surface of a drum, creating friction to slow down the wheel. When you press the brake pedal, hydraulic pressure forces the brake shoes outward against the drum. Despite their effectiveness, these brakes can wear out over time, leading to reduced performance and potential safety hazards.

Signs You Need to Replace Rear Drum Brakes

Several indicators can inform you that it’s time to replace your rear drum brakes

1. Squeaking or Squealing Noises If you hear unusual sounds when applying the brakes, it may signal that the brake shoes are worn and need replacement.

2. Reduced Stopping Power A noticeable decrease in braking efficiency indicates wear in the drum brake system.

3. Vibration or Pulsation If you feel vibrations in the brake pedal, it could mean that the drums are warped and need replacement.

4. Visual Inspection Regular visual checks can reveal issues such as cracks, excessive wear, or a buildup of debris that may necessitate replacement.

5. Brake Warning Light Many vehicles are equipped with a dashboard warning light that activates when there is a problem with the braking system, including the rear drum brakes.

Before you start the replacement process, gather the necessary tools, including

- Socket set - Wrench set - Screwdrivers (flathead and Phillips) - Pliers - Brake cleaner - Drum brake spring tool - New drum brake shoes and drums - Wheel chocks and jack stands

Step-by-Step Replacement Process

1. Preparation Begin the replacement by parking your vehicle on a flat surface. Engage the parking brake and place wheel chocks in front of the front wheels.

2. Remove the Wheel Loosen the lug nuts and raise the rear of the vehicle using a jack. Support it with jack stands for safety. Completely remove the lug nuts and take off the rear wheel.

3. Remove the Brake Drum Inspect the drum for any retaining screws and remove them. Gently tap the drum with a hammer, if necessary, to free it from the hub.

4. Inspect and Remove the Brake Shoes With the drum removed, inspect the brake shoes. Using a brake spring tool, carefully release the springs and clips connecting the shoes to the backing plate. Take note of how the parts are assembled for easier reinstallation.

5. Install New Brake Shoes Position the new brake shoes in place, following the arrangement of the old shoes. Secure them with the springs and clips you removed earlier.

6. Reinstall the Brake Drum Before reattaching the drum, clean its interior with brake cleaner to remove any dust or debris. Slip the drum over the shoes, ensuring it fits snugly.

7. Reattach the Wheel Replace the wheel and hand-tighten the lug nuts. Lower the vehicle and then fully tighten the lug nuts in a crisscross pattern to ensure even pressure.

8. Test the Brakes Before hitting the road, pump the brake pedal several times to seat the new shoes against the drum. Conduct a slow test drive, paying attention to the brakes' responsiveness.

Conclusion

Replacing rear drum brakes may appear daunting, but with the right tools, knowledge, and a step-by-step approach, it can be a manageable DIY task. Regular inspection and maintenance of your brake system not only enhance vehicle safety but also prolong its lifespan, making it a worthwhile endeavor for any car owner. Always consult your vehicle’s manual for specific procedures and safety protocols related to your particular make and model.