Vacuum Brake Booster: Description and Operation

DESCRIPTION
The diaphragm-type power brake booster:
^ is self-contained.
^ is mounted on the engine side of the dash panel.

OPERATION
Uses engine intake manifold vacuum and atmospheric pressure for its power. Uses a power brake booster check valve to provide temporary power assist when the vacuum source is reduced.

SERVICING
The power brake booster check valve and grommet are serviced separately. The hose is serviced as an assembly with the check valve. The power brake booster must be replaced with a new unit if it becomes damaged or inoperative it is serviced only as an assembly. The pushrod length is not adjustable.