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Summary: Rotors usually appear on the front of a car and are used for braking, pushing hydraulic fluid into the caliper. Discover how rotors work and when they need to be replaced with tips from a mechanic in this free car-care and automotive maintenance video.
Richard Goms has been researching genealogy as an amateur and a professional for more than 32 years.read more
"My name is Richard Goms, we're in Murray, Utah, we're talking about basic car care. I'm going to tell you a little bit about how rotors work on a car. Rotors usually appear on the front of a car and are used for braking. Newer cars do have rotors in the back. The rotor appears on the wheel and it turns as you're going down the road then, when you press on the brakes, hydraulic fluid is pushed through this line into the caliper. The caliper then puts pressure on brakes pads, such as this, this is a brake pad, and that pressure then pushes on the rotor and applies stopping power to that rotor. On many of the brake pads, there's usually a little feeler gage and that feeler gage, when the brakes get too low, will start dragging on the rotor and when you hear that little noise, and it starts when you start backing up, it'll make a noise, and when you start hearing that noise you'll know that the brakes need to be replaced."
eHow Article: How Rotors Work