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Originally Posted by 1999montana
One thing I have noticed is that the tapered shaft the wiper arm fits onto often slips and the wiper arm ends up wiping paint below the rear window. I think that is what saved mine thus far. Maybe that is part of the fail-safe to prevent the gear from getting damaged! Ya think?
I did tighten the arm down using a split lock washer in an attempt to keep the arm from slipping on the tapered shaft each time I went through the car wash. Those swirling brushes that go down both sides and around the back spin in different directions. They typically try to rip the wiper off the van.
Alternatively, if you knew someone who could turn a new gear on a CNC machine you could make it out of brass stock. As a matter of fact, both the worm gear and the drive gear could be made from the same material.
I'm surprised some offshore company hasn't started to make parts like this.
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I'm still not thrilled with my options on this repair. It would be quite easy to replace the stripped plastic gear, getting one seems to be impossible.
Have you noticed how many domestic minivans, regardless of make are out there with dangling or inoperative rear wipers? I'm not seeing this problem on import vans. Is it my imagination, or do the Japs know how to deal with snow and rain better than north americans?