Brake Booster

The brake booster:

• is a dual-diaphragm, vacuum-assisted brake booster.
• reduces brake pedal pressure and travel distance.
• is divided into separate vacuum and atmospheric chambers by the diaphragms.

The brake booster aspirator tube check valve:

• is located on the front of the brake booster.
• is positioned between the brake booster and the brake booster vacuum hoses.
• closes when the engine is turned off.
• traps engine vacuum in the brake booster when in the CLOSED position.
• retains vacuum to provide several assisted brake applications with the engine off.