POWER BRAKE UNIT CONSTRUCTION/OPERATION

id041100100900

• The brake booster consists of the following parts:

― Power brake unit

― Vacuum hose

― Check valve

• The power brake booster reduces the effort required to push the brake pedal to actuate the brakes.

• The vacuum hose supplies vacuum to the power brake unit.

• The check valve closes when the engine is turned off and traps engine vacuum in the power brake unit.