How to Adjust Drum Brakes After Replacement

How to Adjust Drum Brakes After Replacing Them

Replacing drum brakes is an essential maintenance task that many vehicle owners choose to undertake themselves to save money and improve their knowledge of automobile mechanics. However, after replacing drum brakes, it is crucial to properly adjust them to ensure optimal performance and safety. In this article, we will guide you through the steps necessary to adjust your new drum brakes.

1. Gather Necessary Tools

Before beginning the adjustment process, gather the necessary tools. You will typically need a brake adjusting tool or a flathead screwdriver, a tire iron, a jack, and a jack stand. Make sure you have your owner's manual on hand, as it may provide specific instructions for your vehicle model.

2. Ensure Safety First

Park your vehicle on a level surface and set the parking brake. Loosen the lug nuts on the rear wheels slightly before lifting the vehicle. Use a jack to raise the back end and secure it with jack stands. Once the vehicle is secure, remove the rear wheels to access the drum brakes.

3. Locate the Adjuster

The brake adjuster is typically located at the bottom of the brake assembly inside the drum. It's usually a star-shaped wheel or a threaded rod, depending on the design of your brake system. The adjuster may require some cleaning if debris has accumulated around it.

4. Adjust the Brake Shoes

Using the brake adjusting tool or a flathead screwdriver, turn the adjuster to expand the brake shoes. Turn it clockwise to expand the shoes and counterclockwise to retract them. Your goal is to set the shoes so that they slightly drag against the drum. This is crucial, as proper tension prevents the brakes from being too loose or too tight.

5. Rotate the Drum

After adjusting the shoes, manually rotate the drum. You should feel slight resistance from the shoes. If the drum spins freely or if there is excessive drag, readjust the screws to achieve the right level of tension.

6. Test the Brakes

Once you are satisfied with the adjustment, reassemble the brakes, reinstall the wheels, and lower the vehicle. Before taking it on the road, pump the brake pedal a few times to set the brake shoes against the drum again. Conduct a slow-speed test drive in a safe area to ensure the brakes engage appropriately and respond well.

7. Final Check

After your test drive, check the wheel temperature. If one wheel is significantly hotter than the others, or if the brakes seem to grab unexpectedly, you may need to readjust them.

In conclusion, properly adjusting drum brakes after replacement is vital for safe driving. With the right tools and careful execution, you can ensure that your new drum brakes perform effectively, providing safety and reliability on the road. Always consult your vehicle’s manual for specific instructions and follow safety protocols during the adjustment process.