Before you begin: It’s a good idea to pay close attention to how your vehicle brakes before AND after installation to make sure your brakes are functioning properly once the job is completed. Also, use plenty of brake cleaner throughout the process of tearing down. It will improve the longevity and performance of your brakes. |
How to Change Drum Brakes
Tools & Materials
How To Replace Drum Brakes
Step 1: Remove the Brake Drum
You can hit the drum with a rubber mallet if needed, but don’t use a hammer or you could damage the drum.
Step 2: Inspect the Drum and Clean the Assembly
Do It Right: If one wheel cylinder is bad, the other will begin to leak soon as well, so they should both be replaced. Always replace wheel cylinders in pairs. |
Do It Right: Brake cleaner will strip paint, so use it carefully. |
Step 3: Remove the Old Shoes
Do It Right: Regardless of the vehicle you’re working on, it’s important to take pictures of the assembly once the drum is removed, and set components on the floor in a way that helps you remember which way they’ll go in when you replace them. Do this on both sides once the drums are off, so you’ll have a way to keep track of how everything fits together. |
Turn the brake adjuster with a screwdriver or brake spoon to relieve the tension on the lower springs holding the shoes tight.
Do It Right: As you remove components from the brake system, set them on the floor or on a table in the same arrangement as they were in on the backing plate. This will help you remember where the parts go when you reattach them. It also allows you to compare the new kit with the old to make sure you’ve got the right parts. They should be identical except for the wear. Brake shoe springs should be replaced with every set of brake shoes. Brake springs lose elasticity like rubber bands and will not hold the brake shoes firmly if worn. |
Step 4: Clean and Inspect the Star Wheel
Step 5: Replace the Primary Shoe
Due to the spring behind the star adjuster on this vehicle, it’s easier to start with the shoes away from the backing plate near the axle hub. Install the star adjuster between the left brake shoe and the right emergency brake lever. Install the spring between the two shoes behind the star adjuster. Slide both shoes into place against the backing plate.
Step 6: Install the New Brake Drum
Once you’ve got your wheels back on, finger-tighten the lug nuts and let your vehicle back down. Then tighten your lug nuts in a star pattern. Use a torque wrench to make sure you tighten them to manufacturer specifications.
You may need to adjust your brake shoes after driving a few hundred miles, or if your brake pedal engages too close to the floor. If you do have to push your pedal down to the floor before your brakes engage, adjust the brake shoes so that they’re tighter against the drum.
And that’s it. Just make sure your brake pedal has pressure before you go tearing out of the garage.
Additional Resources
Shop Brake Parts
Learn About Your Vehicle's Brake System
Learn More About BrakeBest
When to Change Brake Pads
How to Replace Brake Pads & Rotors
If your vehicle doesn't use drum brakes, it's important to replace pads and rotors when they begin to wear out to keep you safe and your vehicle performing at its best.
The automotive repair work depicted in this series is performed under the direction of the manufacturer of the product featured. Prior to undertaking any of the demonstrated repairs on your vehicle, we suggest you consult with a certified mechanic or another professional who can adequately advise you of the proper repair or remedy required. O’Reilly Automotive Stores, Inc. and its affiliates (“O’Reilly”) disclaims any responsibility for injury or damage resulting from a viewer’s attempt to recreate the repairs shown in this series.