how to put a drum brake back together

How to Put a Drum Brake Back Together

Drum brakes are a common type of braking system used in many vehicles. While they have become less popular in recent years, understanding how to work on them is a valuable skill for any car enthusiast or DIY mechanic. If you find yourself needing to reassemble a drum brake system, follow this comprehensive guide to ensure you put it back together correctly.

Tools and Materials Needed

Before starting, gather all necessary tools and materials. You will need - A socket set and wrenches - Screwdrivers (flathead and Phillips) - Brake cleaner - Lubricant (high-temperature grease) - Replacement parts (if necessary)

Safety First

Ensure your vehicle is secure by parking it on a level surface and using wheel chocks. Always wear safety glasses and gloves to protect yourself from dirt and debris.

Step 1 Remove the Drum

If you haven't already, begin by removing the wheel and tire to access the brake drum. Use the appropriate size socket to take off the lug nuts and then clean the area around the drum with brake cleaner to avoid debris entering the braking system.

Once clean, use a drum puller if the drum is stubborn; sometimes, they can stick due to rust or brake dust buildup.

Step 2 Observe the Setup

Before disassembling any components, take a moment to observe the configuration of the drum brake. It is also helpful to take pictures as you go, which will serve as a reference when reassembling.

Carefully take out the old brake shoes, springs, and any other hardware. Note how they are arranged and the tension of the springs, as this will guide you in the reinstallation.

Step 4 Clean the Components

Clean the backing plate, drum, and any remaining hardware with brake cleaner. This will help ensure that your brakes function effectively after reassembly. Inspect the old brake shoes for wear and replace them if they are significantly worn down.

Step 5 Install New Brake Shoes

Begin the reassembly by affixing the new brake shoes to the backing plate. If your shoes came with a specific side, ensure they are positioned correctly (usually, the shoes with the larger friction material go to the rear). Secure them with the appropriate clips and retainers, following the configuration you documented earlier.

Step 6 Attach the Springs

Next, connect the return springs and adjuster springs. These components are critical for ensuring that the shoes retract properly once the brakes are released. When reattaching the springs, apply high-temperature grease to the ends of the springs to facilitate movement and prevent squeaking.

Step 7 Adjust the Brake Shoes

Before reattaching the drum, make sure the shoes are adjusted correctly. The shoes should be just touching the drum's inner surface without excessive friction. You can adjust the star wheel adjuster on the bottom of the assembly to achieve this.

Step 8 Reattach the Drum

Carefully slide the drum over the newly installed shoes. If you feel resistance, double-check the shoe adjustment and ensure everything is seated correctly.

Step 9 Test the System

After reassembling, reinstall the tire and lower the vehicle back to the ground. Ensure you pump the brake pedal a few times to seat the shoes against the drum properly. This is also a good time to check for any unusual sounds when engaging the brakes.

Conclusion

Reassembling a drum brake system is a task that requires careful attention to detail. By following these steps and taking your time, you can successfully put your drum brake back together, ensuring safe and effective braking performance in your vehicle. Always consult your vehicle's service manual for specific instructions tailored to your make and model, and don't hesitate to seek professional help if needed. Happy wrenching!