Last night, in the snow and ice, the passenger side wiper arm got caught on the drivers side. It tore appart the passenger blade, but appears to have stripped a drive gear or something from the drivers side.
The passenger side works perfectly, as do all the controls, but the drivers side only moves between an inch and about 1/3 of the way. I can twist it on it's mount, so I"m guessing either something is loose, or stripped.
What needs to be replaced?
Take the cap off the end of the wiper arm and tighten the nut
Where the wiper arm attaches to the bolt comign out of the cowl, the arm is made of a softer metal that will break loose before the wiper motor is damaged. Take the nut off and remove teh wiper arm. It will be smooth inside and you will see some metal filings. Those filings were the teeth that held the wiper arm in position. You will have to replace the wiper arm to solve the problem.
SOURCE: driver side wiper arm moves only a little
Most caps can be pulled up be using a screw driver.Most wiper arms are held on by a nut. Try to tighten up the nut, If that does not work, visit your local junk yard and purchase a new (used) wiper arm.
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I believe that the arm underneath needs to be tightened but I'm not sure how to get to it. Mine happened on the passenger side.
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