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Location: Part-time out of Bass Lake Retirement Community
My Georgie Boy had wipers that were installed by the coach builder and they were linked to a drive mechanism directly below the physical location of the wipers. You should be able to open the engine access cover and then run the wipers and watch the linkage. That should enable you to see what has slipped or changed.
My guess is that the knurl insert in the wiper blade arm has slipped due to the nut holding the arm to the drive shaft is loose. JM2¢...
Yep ...and due to the spring tension in the arm it can appear to be tight when it isn't. If you pull the blade out away from the window to a 90 degree position that tension is no longer holding the wiper down. Then you can check for looseness/adjust.
Paul (KE5LXU) ...was fulltimin', now parttimin'