Replacing the drum brakes on a Nissan Sentra is a task that demands both precision and an understanding of the vehicle's braking system. Drum brakes have been a long-standing component in many vehicles due to their durability and cost-effectiveness, making them a staple in models like the Nissan Sentra. This guide is designed to provide not only a step-by-step approach but also valuable insights into the intricacies of the process, ensuring reliability and safety.

Safety should be the foremost concern. Begin by ensuring the car is parked on a flat surface and use wheel chocks to prevent any rolling. Loosen the lug nuts on the rear tires slightly without removing them and then elevate the car using a jack. It's imperative to place jack stands under the vehicle for added security. Once the car is safely lifted, remove the lug nuts completely and take off the wheels.
With the wheel removed, the brake drum is exposed. The next step is to remove the drum, which can be challenging if it is rusted or firmly in place. A rubber mallet can be gently tapped around the edges to loosen it. Some models may have threaded holes where bolts can be inserted and tightened to push the drum off; this feature proves quite useful if the drum is particularly stubborn.

Once removed, inspect the brake drum for any signs of excessive wear or damage.
Deep grooves or cracks mean the drum should be replaced. Clean the assembly with brake cleaner to remove dust and grease, which not only improves performance but also visibility during the replacement process. Inspect the brake shoes, springs, and adjusters as these will also need attention.
The brake shoes should be next on the agenda. These are the components that press against the drum to create friction and stop the vehicle. Over time, the friction material wears away. Replace the brake shoes by removing the return springs. It's crucial to remember the positioning of all springs and adjusters as you disassemble. It may be helpful to take a photo of the assembly before taking it apart for reference.
Professional technicians recommend replacing all components in the brake shoe kit, including the adjuster and springs. This ensures even wear and optimal performance. Install the new shoes in place, followed by attaching the springs and any tension adjusters back to their original positions.
nissan sentra drum brake replacement
After assembling the brake shoes, ensure the adjuster is snug, but not too tight. A well-adjusted brake shoe will slightly drag when the drum is turned. It's a balance between free movement and enough tension to enable immediate braking when required.
Reinstall the brake drum carefully. If the new shoes have been adjusted properly, the drum should slide over them without significant resistance. Once the drum is in place, the remaining adjustments undertaken are from the outside through the backing plate. Some models have an access hole for this purpose.
Replace the wheel, tighten the lug nuts by hand, lower the car from the jack stands, and then torque the lug nuts to the manufacturer’s specified value in a criss-cross pattern to ensure even pressure.
Before test-driving, pump the brake pedal several times to set the new brake shoes against the drum. A spongy feel initially is normal, but it should firm up quickly as the shoes find their position.
In conclusion, the replacement of drum brakes on a Nissan Sentra, with attention to detail and adherence to safety protocols, can be a rewarding project that enhances the vehicle's braking efficiency and extends the life of its brake system. Professional expertise comes into play by ensuring every step, from parts removal to reassembly, is executed precisely. Such diligence not only assures performance but builds trust in the maintenance process itself.