How to Check Drum Brakes
Drum brakes are a common type of braking system found in many vehicles, especially older models. Regular maintenance and checking of drum brakes are crucial to ensure safe and efficient braking performance. In this article, we will guide you through the process of how to check drum brakes, helping you identify potential issues and maintain your vehicle’s braking system.
Step 1: Gather the Necessary Tools
Before you begin checking your drum brakes, make sure you have the necessary tools. You will need a lug wrench, a socket set, a torque wrench, a brake cleaner, and a ratchet. These tools will help you safely remove the wheels and inspect the brake components.
Step 2: Prepare the Vehicle
Park your vehicle on a flat, level surface and apply the parking brake. Place wheel chocks behind the tires to prevent the vehicle from rolling. Engage the emergency brake and set the transmission in park or neutral, if applicable.
Step 3: Remove the Wheel
Loosen the lug nuts using the lug wrench and then remove the wheel. Set the wheel aside in a safe place. If you have a torque wrench, make sure to use it to ensure the lug nuts are properly tightened to the manufacturer’s specifications.
Step 4: Inspect the Drum
With the wheel removed, you can now inspect the drum. Look for any signs of rust, cracks, or excessive wear. If you notice any of these issues, the drum may need to be replaced. Also, check for any foreign objects or debris stuck in the drum, as this can cause damage to the brake shoes or wheel cylinders.
Step 5: Check the Brake Shoes
Next, inspect the brake shoes. Look for signs of wear, such as worn-out friction material or rust. The brake shoes should have at least 1/4 inch of friction material remaining. If the shoes are worn down, they will need to be replaced. Also, check the shoe return springs to ensure they are in good condition and not broken.
Step 6: Inspect the Wheel Cylinders
The wheel cylinders are responsible for applying pressure to the brake shoes. Check for any signs of leaks, corrosion, or damage. If you notice any issues, the wheel cylinders may need to be replaced. Also, inspect the brake fluid for any signs of contamination or discoloration, as this can indicate a leak in the braking system.
Step 7: Reassemble and Test the Brakes
After inspecting and replacing any necessary components, reassemble the brake system by replacing the wheel and tightening the lug nuts to the manufacturer’s specifications. Recheck the torque on the lug nuts using the torque wrench. Start the engine and test the brakes to ensure they are functioning properly.
Conclusion
Checking your drum brakes regularly is essential for maintaining your vehicle’s braking system. By following these steps, you can identify potential issues and ensure your vehicle’s brakes are in good working condition. If you are unsure about any aspect of checking your drum brakes, it is always best to consult a professional mechanic.
