how to tighten rear drum brakes

How to Tighten Rear Drum Brakes A Step-by-Step Guide

Maintaining your vehicle’s braking system is crucial for safety and performance, and rear drum brakes are an essential part of many vehicles. Unlike disc brakes, which are more common on the front wheels, drum brakes can lose their effectiveness over time due to wear or improper adjustment. This article will guide you through the process of tightening rear drum brakes, ensuring they function optimally.

Understanding Rear Drum Brakes

Before diving into the adjustment process, it’s important to understand how rear drum brakes work. This type of brake system uses a cylindrical drum that rotates with the wheel. Inside the drum are brake shoes that press against the inner surface of the drum when you apply the brakes. Over time, the shoes can wear down, or the system may go out of adjustment, leading to reduced braking efficiency.

Tools Needed

Before you begin the adjustment, gather the following tools - Jack and jack stands - Lug wrench - Screwdriver - Brake adjustment tool (if available) - Safety goggles and gloves

Step-by-Step Adjustment Process

Step 1 Safety First

Ensure you are working in a safe environment. Park your vehicle on a flat surface, set the parking brake, and disconnect the battery if needed for additional safety. Wear safety goggles and gloves to protect yourself from debris and sharp edges.

Step 2 Raise the Vehicle

Using a jack, lift the rear of your vehicle off the ground. Secure it with jack stands to prevent any accidents while you work. Remove the wheels using the lug wrench, exposing the brake drum.

Before adjusting the brakes, inspect the brake shoes, drum, and related hardware. Look for signs of wear, such as cracks or excessive wear on the brake shoes. If the shoes are worn down significantly, consider replacing them instead of merely tightening them.

Step 4 Locate the Adjustment Mechanism

Drum brakes typically have a star wheel or an adjusting lever that allows you to increase or decrease the space between the brake shoes and the drum. If your vehicle has an access hole on the rear of the backing plate, you can adjust the brakes without removing the drum. If no access exists, you may need to remove the drum for better access.

Step 5 Adjust the Brake Shoes

Using the brake adjustment tool (or a flathead screwdriver), turn the star wheel or lever clockwise to tighten the brake shoes. This will move them closer to the drum. Be careful not to tighten them too much; it’s essential to maintain a slight gap to prevent constant rubbing, which can cause overheating and damage.

Step 6 Test the Tightness

After making adjustments, rotate the drum to check the clearance. The drum should spin freely without grinding or binding. If it does bind, back off the adjustment slightly until you achieve a smooth rotation.

Step 7 Reinstall the Drum and Wheel

Once you are satisfied with the adjustment, if the drum was removed, reinstall it. Ensure that you torque the wheel lug nuts to the manufacturer’s specifications. This is crucial for safety and proper brake function.

Step 8 Lower the Vehicle

With everything reassembled, carefully lower the vehicle back to the ground. Reconnect the battery if it was disconnected before.

Step 9 Test Drive and Monitor

Finally, take your vehicle for a short test drive. Pay attention to the brakes and how they perform. If you notice any unusual sounds or reduced braking efficiency, it may require further inspection or professional assistance.

Conclusion

Tightening rear drum brakes is a straightforward task that can significantly improve your vehicle's braking performance and safety. Regular inspections and maintenance will go a long way in ensuring your braking system remains effective. If you are ever unsure about the process, or if you encounter issues beyond simple adjustments, it is advisable to consult a professional mechanic. Keeping your brakes in top condition will not only enhance your driving experience but also ensure the safety of everyone on the road.