Cadillac 25678717 Blade Assembly, Windshield Wiper

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To maintain the windshield wiper blades' effectiveness and extend their lifespan, it's crucial to keep the windshield and blades clean, as dirt, tree sap, road tar, and other contaminants can lead to streaking, smearing, and blade deterioration. It's advisable to clean the windshield with a commercial glass cleaner at least once a month and wipe the rubber blades with a wet rag afterward. Avoid manually moving the wipers across the windshield, as it can damage the motor and drive mechanism. To inspect or replace the wiper blade elements, place the wiper switch in the LOW speed position and the ignition switch in the ACC position. When the wiper blades are approximately vertical on the windshield, turn the ignition switch OFF. Check the wiper blade elements for cracks, breaks, tears, or signs of smearing, streaking, or chattering, and replace them if necessary. Typically, ozone deterioration limits element life to about one year. For vehicles with aftermarket blades, there are various refill types, such as Anco, Trico, or polycarbonate. Replacement procedures vary depending on the type, involving release buttons, metal backing strips, tabs, or locking devices. Follow the manufacturer's instructions closely, ensuring that all frame jaws engage the refill during installation to prevent scratching the windshield if the metal blade holder touches the glass during wiper operation.

If adjustment is needed, raise the hood and remove the wiper arms. Open the transmission adjustment window on the left side of the cowl vent screen. Loosen the transmission drive link-to-motor crank arm attaching screws, position the left arm and blade assembly to the transmission shaft, align the slot in the arm to the key-way, and push the arm down to engage the slide latch. Rotate the left arm assembly to a position one inch below the ramp stop. Tighten the attaching screws on the transmission link-to-motor crank arm to 4 ft lbs. While the left arm assembly is still below the ramp stop, position the right arm and blade assembly to the transmission shaft approximately one inch below the ramp stop. Push the arm down and engage the slide latch. Close the adjustment window and place the arm assemblies on the ramp stop on the vent screen. Check the wiper pattern and park position as specified.