Voyager L4-2.4L VIN B (2001)
way. The check valve located on the power brake booster face is not repairable, but it can be replaced separately from the power brake booster.
The different engine combinations used in this vehicle require different vacuum hose routings to the power brake booster. All vacuum hoses must be
routed from the engine to the power brake booster without kinks or excessively tight bends.
OPERATION
The power brake booster reduces the amount of force required by the driver to obtain the necessary hydraulic pressure to stop a vehicle.
The power brake booster is vacuum operated. The vacuum is supplied from the intake manifold on the engine through a vacuum hose and the power
brake booster check valve.
As the brake pedal is depressed, the power brake booster's input rod moves forward. This opens and closes valves in the power booster allowing
atmospheric pressure to enter on one side of a diaphragm. Engine vacuum is always present on the other side. This difference in pressure forces the
output rod of the power brake booster out against the primary piston of the master cylinder. As the pistons in the master cylinder move forward this
creates the hydraulic pressure in the brake system.
