Lanos S Hatchback L4-1.6L DOHC D-TEC MFI (1999)
Vacuum Brake Booster: Description and Operation
POWER BOOSTER
This booster is a single diaphragm, vacuum-suspended unit. In a normal operating mode, with the service brakes in the release position, a
vacuum-suspended booster operates with a vacuum on both sides of its diaphragm.
When the brakes are applied, air at atmospheric pressure is admitted to one side of the diaphragm to provide the power assist. When the brakes are
released, atmospheric air is shut off from that side of the diaphragm. The air is then drawn from the booster through the vacuum check valve by the
vacuum source.
IMPORTANT: If any hydraulic component is removed or disconnected, it may be necessary to bleed ail or part of the brake system.
