master cylinder

noun

1. the hydraulic pump of an automotive braking system that contains a cylinder and one or two pistons, is actuated by the brake pedal, and supplies hydraulic fluid under pressure to the brakes at each wheel.

master cylinder

noun

1. a large cylinder in a hydraulic system in which the working fluid is compressed by a piston enabling it to drive one or more slave cylinders See also slave cylinder

Example Sentences

National Highway Traffic Safety Administration says in documents released Tuesday that fluid can leak from the brake master cylinder.

From Seattle Times

The brake pedal is still connected to the master cylinder mechanically, so a driver is able to stop the car if the part fails, but extra force is required.

From Fox News

Ford says fluid can leak from the master cylinder for the front-wheel circuit.

From Fox News

The employee told investigators a brake master cylinder installation and brake flush were billed but not done months before the Oct.

From Washington Times

The former manager of a Mavis Discount Tire shop told investigators in a Sept. 17 interview that a brake master cylinder was invoiced but not installed at the time of a May 2018 inspection.

From Washington Times