Hose and Check Valve

The power brake booster check valve:

• is located on the front of the power brake booster.
• is positioned between the power brake booster and the power brake booster hose.
• closes when the engine is turned OFF.
• traps engine vacuum in the power brake booster when in the CLOSED position.
• retains vacuum to provide 2-3 power-assisted brake applications with the engine off.