Vacuum Brake Booster: Description and Operation
Brake BoosterThe power brake booster:
^ is a two-diaphragm, vacuum-assisted power brake booster.
^ reduces brake pedal pressure and travel distance.
^ is located on the LH side of the bulkhead in the engine compartment, between the brake pedal and brake master cylinder.
^ is divided into separate chambers by the diaphragms. will not operate if vacuum is restricted or if any of the vacuum-related power brake components fail.
^ is replaced as an assembly.
If the power assist fails, the brake system will continue to operate with increased brake pedal effort.
Hose and Check Valve
Part 1 of 2
Part 2 of 2
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 vacuum hose.
^ closes when the engine is turned off.
^ in the closed position, traps engine vacuum ire the power brake booster.
^ retains vacuum to provide several power assisted brake applications with the engine off.