how to replace a drum brake

How to Replace a Drum Brake A Step-by-Step Guide

Drum brakes are a common component in many vehicles, especially older models and some light trucks. They are reliable and effective at stopping the vehicle when properly maintained. However, like any mechanical component, they eventually wear out and need to be replaced. This article will guide you through the process of replacing drum brakes, ensuring your vehicle operates safely and efficiently.

Tools and Materials Required

Before you begin, gather the necessary tools and materials

- Lug wrench - Jack and jack stands - Brake cleaner - Drum brake kit (includes new shoes, springs, and hardware) - Screwdrivers (flathead and Phillips) - Pliers - Torque wrench - Wheel chocks - Work gloves and safety glasses

Step 1 Prepare Your Vehicle

1. Safety First Ensure your vehicle is parked on a flat surface. Engage the parking brake and place wheel chocks behind the wheels that will remain on the ground. 2. Loosen Lug Nuts With the lug wrench, slightly loosen the lug nuts on the rear wheels (or front, depending on where you are replacing the drum brakes) while the vehicle is still on the ground.

Step 2 Raise the Vehicle

1. Jack Up the Car Use the jack to raise the vehicle, then place the jack stands securely under the vehicle to ensure stability. 2. Remove the Wheel Finish removing the loosened lug nuts and take off the wheel, exposing the drum brake assembly.

Step 3 Remove the Brake Drum

1. Inspect the Drum Check if the brake drum has wear or scoring. If it's substantially worn, it may need to be replaced or resurfaced. 2. Remove the Drums If the drum does not easily slide off, look for a small rubber plug on the back of the drum. Remove the plug and adjust the brake shoes inward by using a flathead screwdriver to turn the star wheel, which will allow the drum to slide off more easily.

Step 4 Replace Brake Shoes

1. Remove Old Shoes Take note of how the old brake shoes and hardware are mounted. Detach the springs and the old shoes by removing the clips and using pliers as needed. Take pictures if necessary to remember their orientation. 2. Clean the Components Use brake cleaner to clean the backing plate and any other components. Ensure that no debris or dust remains, which could interfere with the new shoes. 3. Install New Shoes Position the new brake shoes in the same manner as the old ones were configured. Replace the springs and clips, securing them as per the original setup.

Step 5 Reinstall the Brake Drum

1. Position the Drum Carefully slide the brake drum back onto the wheel hub. If it feels tight, adjust the brake shoes inward as you did before until it fits without resistance. 2. Replace the Drum Hardware Ensure that any retaining hardware is securely fastened.

Step 6 Reassemble and Check

1. Reattach the Wheel Place the wheel back onto the hub and hand-tighten the lug nuts. 2. Lower the Vehicle Carefully jack the vehicle down, then remove the jack stands. Once the vehicle is back on the ground, fully tighten the lug nuts in a star pattern to ensure even tightening. Step 7 Test the Brakes

1. Pump the Brake Pedal Before driving, pump the brake pedal several times to seat the shoes against the drum properly. 2. Test Drive Take the vehicle for a short test drive to ensure the brakes function as expected. Listen for any unusual noises and check for any signs of brake dragging.

Conclusion

Replacing drum brakes can be a manageable task for those with basic mechanical skills. Following these steps carefully reduces the risk of mistakes and ensures the safety and functionality of your braking system. Always consult your vehicle's service manual for specific instructions or details about your particular make and model. Regular brake maintenance is essential for safe driving, so don’t hesitate to perform this crucial task when necessary.