adjust drum brakes with parking brake

How to Adjust Drum Brakes with the Parking Brake

Adjusting drum brakes, especially those that incorporate a parking brake, is essential for optimal vehicle performance and safety. Properly functioning brakes ensure that your vehicle can stop efficiently and that the parking brake will hold when parked. This guide will walk you through the process of adjusting drum brakes with an emphasis on the integration of the parking brake mechanism.

Understanding Drum Brakes

Drum brakes operate differently from disc brakes; they utilize a drum that rotates with the wheel and contains brake shoes that expand against the inner surface of the drum to create friction and slow the vehicle. Over time, as brake shoes wear down, the distance between the shoe and drum can increase, leading to decreased efficiency. Maintaining a correct adjustment not only restores performance but also extends the life of the brake components.

Tools Required

Before you begin the adjustment process, it's essential to gather the necessary tools - Jack and jack stands - Lug wrench - Brake adjustment tool or screwdriver - Rags for cleaning - Safety glasses and gloves

1. Preparation Park your vehicle on a flat surface and engage the parking brake. Loosen the lug nuts on the rear wheels but do not remove them completely. Next, jack up the vehicle and place it securely on jack stands.

2. Remove the Wheel Take off the rear wheel to access the drum brake assembly. Inspect the drum and surrounding components for any signs of wear or damage. Clean any dust or debris from the drum and brake shoes using a rag.

3. Locate the Adjuster Drum brakes typically contain an adjuster mechanism which is either a star wheel or an automatic adjuster. Locate this mechanism; it is often positioned between the brake shoes.

4. Adjusting the Shoes Using your brake adjustment tool or a flat screwdriver, turn the adjuster wheel. Turning it clockwise usually tightens the shoes, while counterclockwise loosens them. Adjust the shoes until they are just barely touching the drum. You want a slight drag when manually spinning the drum.

5. Check the Parking Brake The parking brake cable often interferes with the adjustment. To ensure that it is functioning properly, pull the parking brake handle while continuing to adjust the shoes. You should find that the parking brake engages firmly at about three to five clicks. If it's too loose or too tight, adjust the parking brake cable accordingly.

6. Reassemble After achieving the desired shoe adjustment, reattach the wheel and tighten the lug nuts gradually in a crisscross pattern to ensure even pressure. Remove the jack stands and lower the vehicle back to the ground.

7. Test Drive Finally, take your vehicle for a test drive in a safe area. Check the brakes for responsiveness and listen for any unusual noises. Ensure the parking brake holds the car securely when engaged.

Conclusion

Regular adjustment of your drum brakes, particularly when combined with the parking brake, is vital for maintaining performance and safety. By following these steps, you can ensure your drum brakes are correctly set, enhancing your vehicle's braking capabilities. Always remember, if you're unsure or uncomfortable with performing brake adjustments yourself, consult a professional mechanic. Safety should always be your top priority when it comes to vehicle maintenance.