how to disassemble drum brakes

How to Disassemble Drum Brakes A Step-by-Step Guide

Drum brakes are a common braking system used in many vehicles, especially older models and certain types of trucks. Understanding how to disassemble drum brakes can save you time and money when it comes to maintenance and repairs. In this guide, we will cover the main steps to successfully disassemble drum brakes.

Safety First

Before you begin, it's crucial to prioritize safety. Make sure you have the following tools and materials at your disposal safety glasses, gloves, a jack and jack stands, a lug wrench, and a brake tool kit. Ensure your vehicle is parked on a flat surface and the parking brake is engaged to prevent any accidental rolling.

Step 1 Remove the Wheel

Start by using the lug wrench to loosen the lug nuts on the wheel of the drum brake you are working on. It is easier to loosen them while the vehicle is still on the ground. Once loosened, use a jack to lift the car and securely position it on jack stands. Remove the lug nuts completely and take the wheel off to expose the drum brakes.

Step 2 Inspect the Brake Components

Now that the wheel is off, take a moment to visually inspect the brake components, including the drum, shoes, and springs. Look for any signs of wear, damage, or excessive dirt. Familiarizing yourself with the layout will help during reassembly.

Step 3 Remove the Drum

To remove the drum, check for screws that may be holding it in place. If you don’t see any, the drum may just be stuck due to dirt or rust. Gently tap around its circumference with a rubber mallet to loosen it. If it still doesn’t budge, you may need to use a drum puller to avoid damaging the drum.

With the drum removed, you can now see the brake shoes. Start by removing the return springs and any retaining clips that hold the shoes in place. Be careful, as these springs can be under tension. Using a brake tool can help in safely removing them. Once the springs and clips are off, gently pull the brake shoes away from the backing plate.

Step 5 Disconnect the Adjuster

Next, locate the adjuster mechanism usually found at the bottom of the brake assembly. This component helps maintain the proper distance between the drum and the brake shoes. Carefully disconnect the adjuster by removing any pins or clips holding it in place. Make sure to note how it is connected for reassembly.

Step 6 Remove the Wheel Cylinder

If you need to inspect or replace the wheel cylinder, you will need to disconnect the brake line leading to it. Use a wrench to carefully unscrew the line and remove the cylinder from the backing plate. Be prepared for some brake fluid to spill out, so have a rag handy to clean up any spills.

Step 7 Clean and Inspect

With all the components disassembled, take this opportunity to clean each part thoroughly with brake cleaner. Inspect all components for signs of wear or damage. Replacing worn parts will ensure optimal braking performance.

Conclusion

Disassembling drum brakes is a straightforward process that can be accomplished with a little patience and the right tools. By following these steps, you can maintain your braking system effectively. Always refer to your vehicle’s service manual for specific instructions and safety precautions. If you feel uncomfortable at any point, don't hesitate to seek professional help. Remember, a well-maintained brake system is vital for safe driving.