Hose & Check Valve
The power brake booster check valve:
- Is located on the front of the power brake booster. See Fig 1.
- Is positioned between the power brake booster and the power brake booster vacuum hose.
- Closes when the engine is turned off.
- In the closed position, traps engine vacuum in the power brake booster.
- Retains vacuum to provide several power assisted brake applications with the engine off.