Definition of a Function. A function is a relation for which each value from the set the first components of the ordered pairs is associated with exactly one value from the set of second components of the ordered pair. Okay, that is a mouth full.
Master cylinder without booster. Single bore master cylinders: These unboosted hydraulic Master Cylinders are actuated by foot effort, via the brake pedal. The brake pressure is related to actuation force and depends on the piston bore size: the smaller the bore, the higher the pressure.
1 A leaking brake master cylinder can sometimes result in a broken brake booster; in this case, both elements will need to be replaced. 2  Brake systems are extremely sensitive to debris, so they need to be cleaned thoroughly before and during the replacement of a master cylinder.