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Squealing brakes are not only annoying, but they imply there may be a problem with one of the most often engaged parts of the car. Any issue with the brake system should be diagnosed promptly.
Brakes operate in a pretty simple way with only a few components doing all of the work. These components are:
Brake calipers: These hold the brake pads and are responsible for applying them to the brake disc with appropriate force.
Brake pads: These are the pads that provide the friction for the brakes to do their work.
Brake disc rotor: This is a metal disc, usually visible behind the vehicle’s wheel, and connected to the hub. The brake pads grip the rotor, which provides the friction necessary to bring the vehicle to a stop.
Brake master cylinder: This pushes the brake fluid with enough force to apply the brake pads to the brake rotors via the brake calipers. It is usually located under the hood of the car.
Brake booster: Working by vacuum, this boosts the pressure so the driver doesn’t have to exert a lot of force on the brake pedal to engage the brakes.
Brake pads are the most replaced component in the braking system, and worn out pads are the main source of squealing and squeaking noises. Sometimes when the pad material is not blended properly during the manufacturing process, the pads will have hard spots in them that cause noise, too.
The surface of the brake disc is what the brake pads grip onto when brakes are applied. If the surface is either glazed over with brake residue or covered in oxidation (rust), then noise will ensue.
An issue with the brake master cylinder or calipers can cause brake noise when excessive or uneven pressure is applied to the brake disk.
If the backing plate is damaged, it may be rubbing against the brake disc and causing noise. This can easily happen if a tire has been taken off recently.
A top-rated mobile mechanic will come to your home or office to determine the source and cause of the squealing brakes, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.
The mechanic will carefully inspect the brake pads, rotors, cylinder, calipers, and all other related components of the brake system.
Faulty brakes can lock up or fail to stop the vehicle. Friction and the heat it causes can cause anything from warped rotors to accidental fire. The only way to be sure that the brakes are in reliable working order is to book a mechanic to perform a thorough inspection of the brake system.