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.
To function properly, the brake booster needs a good source of a vacuum. The lack of a vacuum is more common than brake booster failure, when we have no power assist. Collapsed and cracked hoses are most common. Other issues include a plugged vacuum port in the intake and a bad check valve in the inlet.