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The wiper arm connects the wiper linkage pivot to the wiper blade, holding the blade at the correct angle and pressure against the windshield for effective wiping. Signs of failure include: a wiper arm that has lost its spring tension and no longer presses the blade firmly against the glass, a visibly bent arm, or an arm that has seized on its pivot and will not move. Replace a damaged wiper arm to restore proper blade pressure and contact angle.
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