Grand Cherokee 2WD V8-4.7L VIN N (2000)
Wiper Blade: Description and Operation
All Grand Cherokee models have a single 31.00 centimeter (12.20 inch) rear wiper blade with a non-replaceable rubber element (squeegee). The center
of the wiper blade has a molded plastic pivot block with an integral latch that is secured in a U-shaped formation on the end of the wiper arm.
The spring-loaded wiper arm features an over-center hinge. The spring tension of the wiper arm controls the pressure applied to the wiper blade on the
glass. The over-center hinge allows the blade to stand off of the liftgate for easy snow removal and cleaning of the glass and squeegee.
The rear wiper arm is secured by a nut to the threaded studs of the rear wiper motor output shaft near the base of the liftgate flip-up glass. A molded
plastic cap on the end of the wiper arm pivots and snaps over the end of the arm for a neat appearance. When the rear wiper arm is in its park position, an
integral molded plastic support in the middle of the arm is positioned on a molded rubber park ramp on the liftgate. The wiper arm support and the park
ramp also provide an alignment reference to ensure accurate rear wiper arm and blade installation.
Caution should be exercised to protect the rubber wiper blade squeegee from any petroleum-based cleaners or contaminants, which will rapidly
deteriorate the rubber. Also, wiper squeegees exposed to the elements for a long time tend to lose their wiping effectiveness.
Periodic cleaning of the wiper blade squeegee is suggested to remove deposits of salt and road film. The wiper blades, arm, and rear glass should be
cleaned with a sponge or cloth and windshield washer fluid, a mild detergent, or a non-abrasive cleaner. If the squeegee is damaged, worn, or
contaminated the wiper blade should be replaced.
The wiper blade and wiper arm are available for service replacement. The wiper arm and wiper blade cannot be adjusted or repaired. If they are faulty or
damaged, they must be replaced.
When the wiper blade is moved back and forth across the rear glass, the rubber squeegee of the wiper blade clears the glass of rain, snow and other
materials that can obstruct visibility. The spring loaded hinge of the wiper arm determines the pressure applied to the wiper blade on the glass. The
multiple bridge formations of the wiper blade help to distribute the wiper arm spring pressure evenly over the length of the squeegee, and allow the
squeegee to conform to the contour of the glass.
