how to adjust brake drums on cars

Дек . 12, 2024 10:06 Back to list

how to adjust brake drums on cars

How to Adjust Brake Drums on Cars

Adjusting brake drums is a crucial maintenance task that ensures your vehicle's braking system functions smoothly and efficiently. Properly adjusted brakes not only enhance your car's performance but also ensure your safety on the road. In this article, we'll discuss how to adjust brake drums on cars, including the tools you'll need, the steps to follow, and some tips for maintaining your brake system.

Understanding Brake Drums

Before we dive into the adjustment process, it's essential to understand how brake drums work. Drum brakes consist of a round drum that rotates with the wheel and brake shoes that press against the inside of the drum to create friction, thereby slowing or stopping the vehicle. Over time, the brake shoes wear down, and the drum may become misaligned or out of adjustment, leading to decreased braking performance.

Tools Needed

Before you begin, gather the following tools

1. Jack and Jack Stands To lift and secure the vehicle. 2. Lug Wrench To remove the wheel. 3. Brake Spoon or Adjuster Tool For adjusting the brake shoes. 4. Socket Set To remove any additional components if necessary. 5. Tape Measure or Feeler Gauge To check clearances.

Steps to Adjust Brake Drums

Step 1 Safely Lift the Vehicle

1. Park your vehicle on a flat, level surface and turn off the engine. Engage the parking brake to prevent the car from rolling. 2. Loosen the lug nuts on the rear wheels slightly while the car is still on the ground. 3. Use the jack to lift the rear of the vehicle and secure it with jack stands. Ensure the car is stable before proceeding.

Step 2 Remove the Wheel

how to adjust brake drums on cars

1. Completely remove the lug nuts and take off the wheel to expose the brake drum. 2. Inspect the brake drum for any visible signs of wear or damage.

Step 3 Inspect the Brake Components

1. Look at the brake shoes for signs of wear. If they are worn unevenly or are thinner than 1/4 inch, consider replacing them. 2. Also, check the condition of the drum. If it shows deep grooves or scoring, it may require machining or replacement.

Step 4 Adjust the Brake Shoes

1. Locate the adjuster mechanism, which is typically found at the bottom of the brake assembly. 2. Use the brake spoon or adjuster tool to turn the adjuster. If the shoes are too far from the drum, you will want to tighten it, which effectively moves the shoes closer. 3. Turn the adjuster several times until the shoes begin to contact the drum lightly — you should hear a faint rubbing sound when you rotate the drum by hand. 4. Once you feel resistance, back off the adjuster a couple of clicks to ensure that the shoes are not dragging against the drum.

Step 5 Reassemble and Test

1. Replace the wheel and hand-tighten the lug nuts. 2. Lower the vehicle back to the ground and use the lug wrench to securely tighten the lug nuts in a crisscross pattern for even distribution. 3. Start the car and carefully test the brakes in a safe area to ensure they function correctly. Listen for unusual noises and check for any pulsations while braking.

Maintenance Tips

- Regular Inspections Check your brake system regularly, at least every 6,000 miles or as recommended by your vehicle’s manufacturer. - Brake Fluid Levels Monitor brake fluid levels and quality, as they play a significant role in braking performance. - Keep Clean Ensure your drums, shoes, and the surrounding components are free from dust and debris that can affect braking efficiency.

Conclusion

Adjusting brake drums is an essential part of vehicle maintenance that requires attention to detail and regular checks. By following these steps, you can help ensure your brake system remains responsive and effective, contributing to overall vehicle safety. If you are ever uncertain about the process, don’t hesitate to consult a professional mechanic for assistance. Safe driving begins with a well-maintained braking system!