Big Father, Small Father at AMC Theatres-River East 21 This Weekend, Oct 16, 2015 (Friday) Festival event in Chicago, IL USA Big Father, Small Father October 16, 2015 at AMC Theatres-River East 21 in Chicago, IL 9:45PM.ind things to do this weekend in Illinois and other fun things to do.
In much the same way that vacuum boosters work, hydraulic power brake boosters rely on a pressure differential to provide braking assistance. The main difference is that it is hydraulic pressure that does the work rather than a vacuum-actuated servo.
June 5, 2014. A vehicle's brake booster uses an engine's vacuum to strengthen the force of a shopper's foot application to the car's master cylinder, and it significantly reduces the effort needed to stop the car. The device is important for buyers who drive vehicles that feature power brakes.