Steps for Rebuilding and Maintaining Drum Brake Systems Effectively and Safely

How to Rebuild Drum Brakes

Rebuilding drum brakes might seem like a daunting task for many car owners. However, with the right tools, supplies, and a little patience, it is a task you can accomplish on your own. Drum brakes are a crucial part of your vehicle's braking system, and keeping them in good shape is essential for safety and performance. This guide will walk you through the process of rebuilding drum brakes step-by-step.

Tools and Materials Needed

Before you start, gather the necessary tools and materials - Jack and jack stands - Lug wrench - Screwdrivers (flat and Phillips) - Brake spring tool - Pliers - Torque wrench - Brake cleaner - New brake shoes - New wheel cylinder (if necessary) - Brake hardware kit (springs, retainers, etc.) - Clean rags or towels - Safety glasses and gloves

Step-by-Step Guide

Step 1 Safety Precautions

Before any work begins, make sure the vehicle is parked on a flat surface and the parking brake is engaged. Wear safety glasses and gloves to protect yourself from any debris or chemicals.

Step 2 Remove the Wheel

Using the lug wrench, loosen the lug nuts of the wheel you will be working on. Once they are slightly loosened, use the jack to lift the vehicle, and secure it on jack stands. After ensuring stability, remove the lug nuts and take off the wheel to expose the drum brake assembly.

Step 3 Inspect the Drum

Once you have access to the drum brakes, inspect the drum for any signs of damage or excessive wear. If the drum is cracked or excessively worn, it should be replaced.

The brake drum is usually held in place by a few screws or bolts. Remove these fasteners, and gently pull the drum off the wheel hub. In some cases, you may have to tap it lightly with a hammer if it's stuck.

Step 5 Examine the Components

With the drum removed, take a close look at all components, including the brake shoes, springs, and wheel cylinder. Identify any parts that are worn or damaged and will need to be replaced. Pay special attention to the brake shoes; if they are thinner than the manufacturer’s specifications, it is time to replace them.

Step 6 Remove Old Brake Shoes

Using the brake spring tool and pliers, carefully remove the return springs and retaining clips from the brake shoes. Once everything is disconnected, take off the old brake shoes. Remember how everything is assembled, as this will help during reassembly.

Step 7 Install New Components

Install the new brake shoes by reversing the removal process. Start by attaching the shoes to the backing plate and then secure them with the retaining clips. Make sure everything is aligned correctly and that the shoes move freely.

If you’re replacing the wheel cylinder, now is the time to install the new one. Make sure to use fresh brake fluid and bleed the system afterward.

Step 8 Reassemble the Brake Assembly

Reattach all springs and ensure all components are securely in place. The brake hardware kit should include new springs and retainers; always use new components for optimal performance.

Step 9 Reinstall the Drum

Once everything is properly installed, carefully slide the brake drum back onto the hub. Ensure it spins freely without making contact with the brake shoes before securing it with the screws or bolts.

Step 10 Reinstall the Wheel

Place the wheel back on and hand-tighten the lug nuts. Lower the vehicle, and using the torque wrench, properly torque the lug nuts to the manufacturer’s specifications.

Step 11 Test Your Brakes

Before taking your vehicle out on the road, pump the brake pedal a few times to seat the new brake shoes properly. Finally, perform a test drive in a safe area to ensure everything is working correctly.

Conclusion

Rebuilding drum brakes is a valuable skill that can save you money and help you understand your vehicle better. By following these steps and taking necessary precautions, you can ensure your drum brakes are rebuilt efficiently and effectively, leading to improved safety on the road. Remember, if you ever feel uncertain about any part of the process, don’t hesitate to consult a professional mechanic.