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02-14-2008
Also keep in mind...if the wiper arm has worked loose over time, the motor side could have chewed up the inside of the wiper arm. It isn't under much stress, but does require some kind of splined inard to bite on. If it's worn smoothe, then all the tightening in the world isn't going to fix the problem, and you'll end up snapping the stud off..which will create a huge problem resulting in you getting a new wiper transmission.
02-14-2008
Like said above, the stud the arm attaches to, that has a threaded top for the nut has the splines, and the arm its self is a softer material, and when the nut is tightened down, the arm is forced onto the tapered splined shaft and splines are created in the arm now. The nut crushes the two together, creating the splined joint.
If the arm becomes loose, and tightening doesn't fix it, then you will either need to shim the arm to the splined tapered shaft, or replace the arm all together. Or worse case, the motor assembly if the studs are stripped, but 9 times out of 10, the arm is what needs to be replaced.
ED would be you cheapest best bet if you cant get them locally at a good price. email ED at GTPED@msn.com
~F~
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