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Originally Posted by johnf
Is there some sort of lubrication I can perform.
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Yes. Turn the wiperswitch on and off again quickly ( to move the wiper out of the parked position).
Now, move the arm manually to the straight up & down position.
Pull out the bottom of the cover, at the base of the wiperarm.
Now, you can see the " piston " that makes your wiper do it's " little dance ".
Drop a few drops of light oil ( transmission fluid ) down onto the shaft & work the wiper back & forth by hand.
Re-install the rectangular cover.
That should do it.