Grand Cherokee 2WD V8-5.7L VIN 2 (2005)
Wiper Blade: Description and Operation
Each front wiper blade is secured by an integral pivot pin (5) and a pivot block (3) with a release tab (4) to the hook formation on the tip of the front
wiper arms. The front wiper blades rest on the glass near the base of the windshield when the wipers are not in operation. Each wiper blade consists of
the following components:
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Superstructure - The superstructure (1) includes several stamped steel bridges and links with claw formations that grip the wiper blade element
(2). Also included in this unit is the latching, molded plastic pivot block that secures the superstructure to the wiper arm.
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Element - The wiper blade element is the resilient rubber member of the wiper blade that contacts the glass
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Flexor - The flexor (7) is a rigid metal component running along the length of each side of the wiper element where it is gripped by the claws (6)
of the superstructure.
All Grand Cherokee models have two 52.50 centimeter (20.67 inch) long windshield wiper blades with non-replaceable rubber elements (squeegees).
The wiper blades cannot be adjusted or repaired and, if faulty, worn, or damaged, the entire wiper blade unit must be replaced.
The front wiper blades are moved back and forth across the glass by the front wiper arms when the wipers are being operated. The wiper blade
superstructure is the flexible frame that grips the wiper blade element and evenly distributes the force of the spring-loaded wiper arm along the length of
the element. The combination of the wiper arm force and the flexibility of the superstructure makes the element conform to and maintain proper contact
with the glass, even as the blade is moved over the varied curvature that may be encountered across the glass surface. The wiper element flexor provides
the claws of the blade superstructure with a rigid, yet flexible component on the element which can be gripped. The rubber element is designed to be stiff
enough to maintain an even cleaning edge as it is drawn across the glass, yet resilient enough to conform to the glass surface and flip from one cleaning
edge to the other each time the wiper blade changes directions.
