how to take apart a drum brake

How to Take Apart a Drum Brake A Step-by-Step Guide

Drum brakes are a common type of braking system used in various vehicles, especially older models and some current economy cars. Understanding how to take apart a drum brake can be essential for performing maintenance or repairs. This guide will walk you through the process step by step, ensuring you have a comprehensive understanding of the task at hand.

Tools and Materials Needed

Before you begin, make sure you have the following tools and materials

- Socket set and ratchet - Brake spring tool - Screwdrivers (flathead and Phillips) - Pliers - Hammer - Brake cleaner - Clean rags - Safety glasses - Gloves

Step 1 Safety First

Always prioritize safety when working on your vehicle. Park the vehicle on a flat surface, engage the parking brake, and place wheel chocks behind the wheels remaining on the ground. Wear safety glasses and gloves to protect yourself from dust and debris.

Step 2 Remove the Wheel

Loosen the lug nuts of the wheel where you will be working on the drum brakes using a socket wrench. Be sure to loosen the nuts while the wheel is still on the ground to prevent it from spinning. Once the lug nuts are loosened, raise the vehicle using a jack and secure it with jack stands. Now you can completely remove the lug nuts and take off the wheel.

With the wheel removed, you will now see the drum brake assembly. The brake drum is typically held in place by a set of screws or can simply be pulled straight off. If your drum is stuck due to rust or debris, use a hammer and a block of wood to gently tap around the perimeter of the drum until it loosens. Avoid hitting the drum directly to prevent damage.

Step 4 Inspect the Components

Once the drum is removed, inspect the brake shoes, springs, and other components for any signs of wear or damage. This is a good time to take notes or photographs so you can reference them later when reassembling the brake system.

Step 5 Detach the Brake Shoes

Using a brake spring tool, carefully detach the brake shoes from the assembly. Start by removing the return springs that hold the shoes in place, followed by the hold-down springs. Make sure to keep track of how these components are arranged for reassembly.

Next, take off the brake shoes from the anchor points. If the shoes are stuck, you might need to wiggle them gently or use a screwdriver to pry them off without damaging them.

Step 6 Remove the Adjuster

Many drum brake systems include an automatic adjuster mechanism. This may need to be removed before you can fully dismantle the system. Look for the adjuster screw and take it out with your screwdriver. Again, take note of how it is positioned for reassembly.

Step 7 Clean the Components

After disassembly, clean all components using brake cleaner and a rag. This will help remove old dust, grease, and residues that may hinder the performance of the brakes. Pay special attention to the brake drum's inner surface and the brake shoes.

Step 8 Reassemble the Drum Brake

Reassembly is the reverse process of disassembly. Ensure that you place the springs, shoes, and adjuster back in their original positions. It’s crucial to ensure everything is aligned correctly.

After everything is back in place, reinstall the brake drum and wheel. Before lowering the vehicle, ensure that lug nuts are hand-tightened. Once the vehicle is back on the ground, fully tighten the lug nuts in a star pattern to ensure even pressure.

Step 9 Test Your Work

After reassembly, always test the brake system before taking the vehicle back on the road. Pump the brake pedal to set the shoes against the drum, and check for any unusual noises or issues.

Conclusion

Taking apart a drum brake may seem daunting at first, but with the right tools, a systematic approach, and attention to detail, it can be accomplished without professional help. Remember to prioritize safety and take your time during the process. Regular inspection and maintenance of your brakes will ensure that you are driving safely and efficiently.