which way to turn drum brake adjuster

Understanding Which Way to Turn a Drum Brake Adjuster

Drum brakes are a crucial part of many vehicles, especially older models and some current vehicles like light trucks and certain compact cars. Over time, brake shoes wear down, leading to a reduction in braking efficiency. Regular maintenance, including adjusting the drum brake adjuster, is essential to ensure optimal braking performance. This article will guide you on how to determine which way to turn a drum brake adjuster for optimal results.

What Is a Drum Brake Adjuster?

The drum brake adjuster is a mechanism that adjusts the distance between the brake shoes and the brake drum. As the brake shoes wear out, the adjuster compensates by moving the shoes closer to the drum, maintaining effective brake performance. If not adjusted properly, drivers may experience a spongy brake pedal feel, decreased braking efficiency, and an increase in stopping distance.

Directions for Adjusting the Drum Brake

The key to effectively adjusting the drum brake lies in understanding the mechanism of the adjuster. Typically, there are two common types of drum brake adjusters the star wheel adjuster and the automatic adjuster. When working with these components, it is essential to know which way to turn the adjuster to achieve the desired result.

1. Star Wheel Adjuster The star wheel adjuster is the most common type. It consists of a toothed wheel connected to a lever. To adjust the brake shoes, you will need a brake adjustment tool or a flat-head screwdriver.

- To Increase Brake Shoe Distance (Tighten) You turn the star wheel adjuster upwards (clockwise). This will push the brake shoes outward, allowing them to make proper contact with the drum. - To Decrease Brake Shoe Distance (Loosen) You turn the star wheel adjuster downwards (counterclockwise). This will pull the brake shoes inward, increasing the gap between the shoes and the drum.

2. Automatic Adjusters Many newer vehicles come equipped with an automatic adjuster system. These often self-adjust whenever the brakes are applied and the vehicle is in reverse, or they activate through a manual adjustment mechanism. However, manual adjustments may still be necessary

- To Adjust the Brake Shoes Outward You will typically find a lever mechanism. Pressing down or pulling the lever often yields the intended adjustment, making it necessary to verify the direction indicated in the vehicle's service manual.

Identifying the Right Adjustment

Before proceeding with any adjustments, it is vital to assess the condition of the brake shoes and the drum. Inspect for wear, grooves, and any signs of damage. If the brake shoes are worn out beyond their usable life, replacing them is a must. Additionally, understanding whether your vehicle has a single or dual-cylinder system can also influence how you proceed with adjustments.

Test the Brakes After Adjustment

Once adjustments are made, it's crucial to test the brakes. Slowly drive the vehicle in a safe area and apply the brakes gently. Listen for any unusual noises and watch for any signs of grinding or dragging. If the vehicle pulls to one side, further adjustments may be necessary.

Safety First

When working with brake systems, ensure that you take necessary safety precautions. Always wear safety glasses, and consider working on a level surface. Use jack stands to secure the vehicle when lifting it. If unsure about any steps, consulting a professional mechanic is advisable.

Conclusion

Properly adjusting drum brake adjusters is an essential maintenance task that contributes to vehicle safety and performance. Understanding the correct direction to turn the adjuster—clockwise to tighten and counterclockwise to loosen—can make the process straightforward. Regular inspections and timely adjustments will ensure the drum brakes operate efficiently, providing a safer driving experience. Remember, when in doubt, seek professional assistance to avoid compromising your safety and the overall performance of your vehicle.