Changing Drum Brake Pads A Step-by-Step Guide
When it comes to vehicle maintenance, one of the most crucial components to pay attention to is the braking system. Drum brakes, while less common than disc brakes, are still widely used in many vehicles, especially in older models and on the rear axles of some modern cars. Over time, the brake pads within the drum can wear out, resulting in decreased braking performance and an increased risk of accidents. Therefore, knowing how to change drum brake pads is essential for any car owner. This comprehensive guide will walk you through the process, ensuring that you can safely and effectively replace your drum brake pads when necessary.
Tools and Materials Needed
Before starting, gather the necessary tools and materials. You will need - A jack and jack stands - A lug wrench - Brake cleaner - New drum brake shoes - A C-clamp or brake shoe spreader tool - Basic hand tools (screwdrivers, pliers, etc.) - A torque wrench (optional)
Step 1 Safety First
Always prioritize safety when working on your vehicle. Begin by parking your car on a flat surface and engaging the parking brake. For added safety, consider placing wheel chocks around the front wheels to prevent any movement. Put on safety glasses and gloves to protect yourself from debris and sharp edges.
Step 2 Removing the Wheel
Using a lug wrench, loosen the lug nuts on the rear wheel where you’ll be changing the brake pads. Do not remove them completely just yet. Once they are loose, use a jack to lift the vehicle and secure it with jack stands to provide stability. Now, you can fully remove the lug nuts and take off the wheel to expose the drum brake assembly.
Step 3 Inspecting the Brake Drum
Before you proceed with the replacement, inspect the brake drum for any signs of damage or excessive wear. If the surface is grooved or significantly worn, it may need to be resurfaced or replaced. In most cases, if the drum appears to be in good condition, you can reuse it as long as it meets the manufacturer’s specifications.
Step 4 Removing the Old Brake Shoes
Carefully remove the brake drum by pulling it straight off. You may need to tap it gently with a hammer if it is stuck, being cautious not to damage any components. Once the drum is removed, you will see the brake shoes and the hardware that holds them in place. Take a moment to observe how everything is assembled because you will need to replicate this setup with the new shoes.
Using your hand tools, remove the springs, clips, and any other retaining hardware that holds the brake shoes in place. This may require some effort, as these components can be under tension. Keep track of how everything is removed, as you will need to install it back in the same manner.
Step 5 Installing New Brake Shoes
With the old brake shoes removed, compare them to the new ones to ensure a proper fit. Start by installing the new brake shoes in the same configuration as the old ones. Make sure to attach all necessary hardware, ensuring everything is secure. Use the C-clamp or brake shoe spreader tool to compress the shoes slightly, making it easier to fit them into place.
Step 6 Reassembling the Drum Brake Assembly
Once the new shoes are installed, it’s time to put the brake drum back on. Slide the drum over the shoes, and ensure it spins freely. If it’s too tight, you may need to adjust the star wheel adjuster to increase space.
Step 7 Reinstalling the Wheel
Now that everything is in place, it’s time to put the wheel back on. Carefully align it with the hub and hand-tighten the lug nuts. Once the wheel is back on, lower the car from the jack stands and finish tightening the lug nuts in a criss-cross pattern to ensure even tension.
Step 8 Test the Brakes
Finally, it’s essential to test your brakes before hitting the road. Pump the brake pedal a few times to seat the new shoes against the drum properly. Make sure to check for any unusual noises or issues.
Conclusion
Changing drum brake pads may seem intimidating at first, but with the right tools and a systematic approach, it can be a straightforward task. Regular maintenance of your vehicle's braking system not only enhances safety but also saves you money on professional services. With this guide, you can confidently tackle drum brake pad replacement and keep your vehicle in top condition. Always remember, if in doubt, consult a professional mechanic for assistance. Safe driving!