Maintaining your vehicle’s braking system is a critical aspect of ensuring safety on the road. While many modern cars come equipped with disc brakes on all wheels, some vehicles, particularly older models and certain types of vehicles, still use rear drum brakes.
Learning how to adjust rear drum brakes is a valuable skill for any automotive enthusiast or DIY mechanic.
In this comprehensive guide, we will walk you through the step-by-step process of adjusting rear drum brakes, ensuring optimal performance and safety for your vehicle.
Understanding Rear Drum Brakes
Before delving into the adjustment process, it’s essential to understand the basic components of rear drum brakes. Unlike disc brakes, drum brakes consist of several components, including brake shoes, wheel cylinders, springs, and an adjuster mechanism. The adjuster is a crucial part that ensures the proper clearance between the brake shoes and the drum.
Tools and Materials You’ll Need
Before starting the adjustment process, gather the necessary tools and materials:
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Jack and jack stands
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Lug wrench
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Screwdriver
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Brake spoon or brake adjusting tool
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Brake cleaner
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Brake fluid (if necessary)
Step-by-Step Rear Drum Brake Adjustment
Step 1: Safety First
Ensure the vehicle is on a level surface, engage the parking brake, and chock the front wheels. Use a jack to lift the rear of the vehicle and secure it with jack stands.
Step 2: Remove the Wheel
Using a lug wrench, remove the wheel to access the brake drum. This step might differ depending on your vehicle’s make and model.
Step 3: Locate the Adjuster
Look for the rubber plug on the back of the brake backing plate. Remove the plug to access the brake adjuster.
Step 4: Adjust the Brakes
Insert a screwdriver or brake adjusting tool into the access hole and rotate the adjuster. Turn it in the appropriate direction to tighten the brake shoes against the drum. You should feel some resistance when turning the drum.
Step 5: Check Drum Resistance
Rotate the brake drum by hand. You should feel a slight drag from the brake shoes against the drum. Repeat the adjustment if needed until you achieve the desired resistance.
Step 6: Reinstall the Rubber Plug
Once the adjustment is complete, replace the rubber plug to protect the adjuster mechanism from dirt and debris.
Step 7: Reinstall the Wheel
Put the wheel back on and tighten the lug nuts. Lower the vehicle, remove the jack stands, and lower the jack.
Step 8: Test Drive
Before hitting the road, perform a few slow-speed stops to ensure the brakes are functioning correctly. Listen for any unusual noises and pay attention to the pedal feel.
Maintenance Tips
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Regularly inspect the brake system for signs of wear or damage.
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Adjust the rear drum brakes whenever you notice reduced braking performance or excessive pedal travel.
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Consult your vehicle’s manual for specific instructions and torque specifications.
Conclusion
Adjusting rear drum brakes is a fundamental skill that can contribute to the overall safety and performance of your vehicle. By following this step-by-step guide and practicing regular maintenance, you can keep your rear drum brakes in optimal condition, ensuring a safe and enjoyable driving experience. Remember, if you’re ever unsure or uncomfortable performing brake adjustments, it’s always recommended to seek professional assistance to guarantee the safety of yourself and others on the road.
