It worked! I found some additional help from a YouTube video instructing me to clean the aluminum shavings from the bolt so that there was better contact, but when I put it all back together, the wiper was still slipping. Apparently it had worn away inside the screw part of the wiper arm that when a...

Thank you so much. I'll give it a try and I really appreciate the link although I'm hoping that I won't have to replace the motor.
Helena

I'm having a similar issue with my '93 240 wagon's windshield wipers. The driver's side goes WAY beyond the windshield to the left and then when it goes back it is out of sync with the passenger side and they collide and get stuck. I really need to get the this fixed because it's winter in Ohio and ...