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Well I searched and searched before asking (hate noobs asking the same ?`s over and over again.) My 1997 Driver wiper doesnt give that lift in the middle of its sweep it just stays retracted i can pull on the arm and it feels as if nothing is their. I will take it apart this weekend ( I did learn how to do that from here.) I guess my question is what is it likely? I assume its the gears inside the arm. And the next question where to buy the gear and i also need a drivers side wiper. I was wondering if this site had online vendors that help out members.

Thank you all for your time,


Anthony
 

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This is a common fault on W140s (like the A/C evap, self-closing doors pumps et.al).

The mechanism destroys itself and although the wiper stills completes its complete wipe sweep, it doesn't "jump" to reach the corner of the windshield.

You should find a couple of broken rollers which together meet to extended the wiper arm. The problem is that Mercedes does not sell the parts separately, only the full wiper base (which is stupidly expensive).

I had the parts re manufactured at a local specialist shop and problem solved at a fraction of the cost.
 
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