Grand Cherokee 2WD V8-4.7L VIN J (2004)
Windshield Washer Hose: Description and Operation
Front Washer Hoses/Tubes
FRONT WASHER HOSES/TUBES
The front washer plumbing consists of a small diameter rubber hose that is routed from the barbed outlet nipple of the front washer pump/motor on the
washer reservoir and along the reservoir filler neck into the engine compartment. Within the engine compartment, a molded plastic in-line fitting with
barbed nipples joins the washer hose to another section of hose that is routed along side the left headlamp and dash wire harness to the cowl plenum
area. The engine compartment washer hose passes from the engine compartment into the cowl plenum area through a dedicated hole with a rubber
grommet near the left end of the cowl plenum panel.
A molded plastic elbow fitting with barbed nipples joins the engine compartment hose to the cowl plenum cover/grille panel hose. The cowl plenum
cover/ grille panel washer hose is routed through routing clips on the underside of the panel and connected to the inlet of the molded plastic wye fitting
that includes the integral front check valve. The cowl grille cover hose is connected to one nipple on the wye fitting and the two washer nozzle hoses
are connected to the other two wye fitting nipples. The washer nozzle hoses are then routed along the underside of the cowl plenum cover/grille panel
to the two front washer nozzles.
Washer hose is available for service only as roll stock, which must then be cut to length. The molded plastic washer hose fittings cannot be repaired. If
these fittings are faulty or damaged, they must be replaced.
Washer fluid in the washer reservoir is pressurized and fed by the front washer pump/motor through the front washer system plumbing and fittings to
the two front washer nozzles. Whenever routing the washer hose or a wire harness containing a washer hose, it must be routed away from hot, sharp,
or moving parts; and, sharp bends that might pinch the hose must be avoided.
