Raider 4WD V6-3.7L SOHC (2007)
Check Valve: Description and Operation
CHECK VALVE
DESCRIPTION
A single washer system check valve is standard equipment on this vehicle, and is installed in the washer system plumbing. The check valve is integral to
the washer nozzle plumbing wye fitting (2) located in the cowl plenum area beneath the cowl plenum cover/grille panel near the base of the windshield.
The check valve consists of a molded plastic body with a raised arrowhead (4) molded into its center section that indicates the direction of the flow
through the valve, and three barbed hose nipples (1 and 3) formed in a wye configuration on the outside circumference of the center section of the valve
body. The check valve cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced.
OPERATION
The check valve provides more than one function in this application. It serves as a wye connector fitting between the engine compartment and washer
nozzle sections of the washer supply hose. It prevents washer fluid from draining out of the washer supply hoses back to the washer reservoir. This
drain-back would result in a lengthy delay from when the washer switch is actuated until washer fluid was dispensed through the washer nozzles, because
the washer pump would have to refill the washer plumbing from the reservoir to the nozzles.
