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Old 10-09-2023, 02:05 PM   #12
mr48chev
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Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,346
Re: Windshield wiper question

Truth is that the factory wiper arms for vacuum wipers didn't don't have a lot of tension to press the blades against the glass. Any of us who have swapped for higher tension aftermarket arms without changing to an electric motor have experinced the vacuum motors not working well with higher tension arms.
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