diagram nissan rear drum brake repair

Understanding Nissan Rear Drum Brake Repair A Comprehensive Guide

When it comes to maintaining vehicle safety and performance, understanding your car's braking system is crucial. For owners of Nissan vehicles equipped with rear drum brakes, knowing how to repair and service this system can save you both time and money. This article provides an in-depth look at rear drum brake repair, outlining the necessary steps, tools, and tips for effective maintenance.

The Anatomy of Rear Drum Brakes

Before diving into the repair process, it’s essential to understand the components that make up the rear drum brake system. Drum brakes consist of several key elements the brake drum, brake shoes, wheel cylinder, return springs, adjuster mechanism, and the backing plate. The drum encases the brake shoes; when you press the brake pedal, hydraulic pressure pushes the wheel cylinder, forcing the shoes against the inside of the drum to create friction, which slows the vehicle.

Common Symptoms of Wear and Tear

Before attempting any repairs, pay attention to the signs that indicate your rear drum brakes may need servicing

1. Squeaking or Grinding Noises These sounds often signal that the brake shoes are worn and need replacing. 2. Decreased Braking Performance If you notice longer stopping distances, it could be due to worn or damaged components. 3. Vibration Upon Braking This can result from out-of-round drums or unevenly worn brake shoes. 4. Brake Warning Light Ensure that your dashboard indicators are functioning correctly as they can alert you to brake issues.

Tools and Materials Needed

To perform rear drum brake repair, gather the following tools and materials

- Brake drum pullers - Wrenches and socket set - Screwdrivers - Torque wrench - Brake cleaner - Replacement brake shoes - New brake drums (if necessary) - Brake grease

Step-by-Step Repair Process

1. Safety First Begin by parking your vehicle on a flat surface, setting the parking brake, and loosening the lug nuts on the rear wheels. Use jack stands to elevate the car securely.

2. Remove the Wheel Once the vehicle is lifted, remove the wheel to access the brake drum.

3. Inspect the Brake Drum Before removal, inspect the brake drum for wear, scoring, or cracking. If the surface is damaged, it may need to be replaced.

4. Remove the Brake Drum If the drum is stuck, use a brake drum puller to gently remove it from the hub.

5. Inspect Brake Components Examine the brake shoes, wheel cylinder, and springs. Look for signs of wear, such as cracking or peeling on the shoes and leaks from the wheel cylinder.

6. Replace Worn Parts If you discovered any damaged components, now is the time to replace them. Install new brake shoes, applying brake grease to the contact points as needed.

7. Adjust the Brake Shoes Use the adjuster mechanism to ensure proper clearance between the shoes and the drum. This adjustment ensures optimal braking performance.

8. Reinstall the Brake Drum Once everything is in order, reinstall the drum, ensuring it rotates freely without binding.

9. Reattach the Wheel Place the wheel back onto the hub, tightening the lug nuts by hand initially and then with a torque wrench to the manufacturer's specified torque.

10. Test Your Brakes Before taking your vehicle on the road, press the brake pedal a few times to ensure proper seating of the brake shoes. Check for any unusual noises or vibrations when driving at low speeds.

Conclusion

Performing rear drum brake repairs on your Nissan can seem daunting, but with the right tools, knowledge, and safety precautions, it is a manageable task. Regular maintenance not only extends the life of your brakes but also ensures your safety on the road. Remember, if you are ever in doubt, consulting with a professional mechanic can provide peace of mind and ensure that your braking system is functioning optimally. Safe driving!