Southampton Auto Repair

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Tag Archives: wheel cylinder

Why do my brakes squeak?

Why do my brakes squeak?

Squeaking front brakes are a definite sign that your car needs some attention! There are plenty of things that can go wrong with your brake system and cause squeaking. The sooner that you have the situation checked out the better off you will be in avoiding unnecessary expenses with your repairs. The best-case scenario is that the brake pads are worn out and the squeaking is coming from a warning sensor that is designed to alert you of the worn-out brake pads. A tell-tale sign of this condition is a consistent squeal or squeak that goes away when braking. Address this concern right away and you may be able to reuse the brake rotors.  Avoiding this warning noise will eventually lead to a deeper and louder grinding noise. This grinding may be the brake pad backing contacting the brake rotor. In most cases, the grinding of the pad and rotor will lead to the need to replace the brake rotors.  Avoiding the grinding and continuing to drive may go even further and damage the brak ... read more

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Brake Repair

Wheel Cylinder

Wheel Cylinder

What is a Wheel Cylinder? The wheel cylinder is the hydraulic component that actuates the brake shoes in a drum brake assembly. Hydraulic pressure from the master cylinder pushes the pistons outward moving the semi-circular brake shoe in contact with the brake drum. This contact creates the friction that slows your vehicle. Wheel cylinders are only used in drum brake equipped vehicles and therefore are becoming less commonplace. The most common failure of a wheel cylinder is leakage. Over time the wheel cylinder piston seals will deteriorate and begin to allow fluid to pass. To check for wheel cylinder leakage the dust boot is opened to inspect. As seen in the figure the red arrow points to fluid that has bypassed the seal and filled in behind the dust boot. This wheel cylinder will require replacement. After the new cylinder is installed the braking system will be refilled and the air removed through the bleeding procedure. A wheel cylinder replacement is the perfect time to service t ... read more