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Articulating windshield wipers
For those of you with later model Mercedes with the articulating arm, I've
been seeing a number of failures recently. The grease in the head of the wiper gets hard, and the plastic teeth that move the arm in and out get chewed up. https://19216801.onl/ https://routerlogin.uno/ Result is the wiper jamming, or jumping time so the arm does not extend at the 45 degree point. What is happening is that the teeth that are fixed to the head get sheared, which allow for the jumping or jamming. Mercedes does not service just the plastic teeth, preferring to have the owner buy a new assembly. Priced one lately? Would probably total an early W124 or W201! Subject car is a 1992 500SL, but it is typical for the W124, W201, W140, and probably others.... Upon disassembly, maybe 40% of the teeth had been sheared off. Wiper was jamming when turned on, would work for a swipe or two, then jam. We removed the plastic teeth (2 sets) from the head, and cut off the remaining teeth. Need to keep the top portion, since that is a labyrinth seal for the head. Explaining further, the the system works like a rack and pinion. The rack is attached to the wiper head and the pinion is attached to the wiper arm. The rack is what is removed... The arm is set to the retracted position, which appears to be a null postion. Pulling on the arm does not extend it. Reassembly, without the teeth, and arm in the retracted position resulted in a wiper that worked fine without the articulation. So far, we have not had any problems with it, and if the arm eventually starts to extend, there are ways to lock the arm in the min position..... Not my first choice of repair, but for a seldom used roadster that need to pass state inspection, this fix did the job! Last edited by Soulja; 10-05-2021 at 07:07 AM. |
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FWIW, the early 124's, 86 for sure maybe 87 too, have a metal gear. Whenever you come across one in the junkyards, snag it.
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You do realize that the gears are available?
https://www.odometergears.com/products/Mercedes-Benz/190E+%28201%29++82-93/57 |
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