DIY: windshield wiper assembly preventative maintenance. - Mercedes-Benz Forum
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#1 (permalink) Old 08-15-2012, 10:49 AM
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DIY: windshield wiper assembly preventative maintenance.

MB doesn't do a very good job of letting us know when preventative maintenance is due on the 129, 124, and 201 single arm windshield wiper assembly.

So rather than reinvent the wheel I strongly suggest that ALL 129 owners read the following links and decide what is best for each owner. But, I have to ask "can you afford another $1K+ repair bill in lieu of such a simple DIY"?


How to lubricate the wiper mechanism

R129 Wiper Blade R&R Note: this is an early R129 and the plastic cover comes off differently on later models.

Hesitating Wiper Fix

Mono Windshield Wiper Gear Failure

How to remove the entire wiper assembly to disassemble and R&R the wiper gear.

Mercedes 129 Wiper Motor, Transmission, and Arm Assembly | eBay

Mercedes Wiper Gear for the 129,124, and 201.

Mercedes Wiper Gear for the 129,124, and 201

Mercedes - Bosch Wiper Transmission Gear - 129 Chassis

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Last edited by lynns; 01-31-2013 at 09:33 AM.
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#2 (permalink) Old 08-15-2012, 11:07 AM
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Thanks, Lynns! A worthwhile task to prevent a multitude of problems. Doing it this weekend!

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#3 (permalink) Old 08-15-2012, 11:21 AM
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I thought the person in the youtube video might be able do the work a little more easily if he had raised the hood to the perpendicular position (two notches/latches on the sides).
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#4 (permalink) Old 08-15-2012, 08:09 PM
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I thought the person in the youtube video might be able do the work a little more easily if he had raised the hood to the perpendicular position (two notches/latches on the sides).
Perhaps he didn't know

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#5 (permalink) Old 08-15-2012, 10:50 PM
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I thought the person in the youtube video might be able do the work a little more easily if he had raised the hood to the perpendicular position (two notches/latches on the sides).
After doing mine, I didn't find it necessary.

Last edited by lynns; 08-16-2012 at 02:06 PM.
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#6 (permalink) Old 08-16-2012, 03:18 AM
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Thanks for that Lynns, another job to do when the monsoon season (summer) is finished here
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#7 (permalink) Old 08-16-2012, 10:24 AM
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FWIW The turtle shell removal is not all the same. The housing is not always open with a nail under a flexible edge. Lubrication is always good to do, as is positioning the wiper motor for the proper alignment on the glass. the blade should not drag across the metal frame!
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#8 (permalink) Old 08-16-2012, 02:05 PM
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FWIW The turtle shell removal is not all the same. The housing is not always open with a nail under a flexible edge.
Agreed, I was able to remove the shell w/o any tools on my 2000. Just bare hands unclipping the tail end on both sides and lifting. But the wiper arm needs to be wiggled off after using an Allen Head Wrench on the single bolt before the cover will come off completely.
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#9 (permalink) Old 08-16-2012, 09:42 PM
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Lynn, As a matter of interest how did the inside of yours look. Was it in fair shape or in desperate need of a clean and lube
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#10 (permalink) Old 08-17-2012, 02:02 AM
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Lynn, As a matter of interest how did the inside of yours look. Was it in fair shape or in desperate need of a clean and lube
As you know I live in a temperate, low rainfall area, and really try not to drive when it rains because I don't want to spend all the time that it takes to clean a black car. So my wiper assembly was in good shape on the inside. But the area that needed lubrication was DRY and after I did the maintenance the wiper assembly was quieter except for a slight WHOOSHING sound that I think was there from the beginning. It makes the sound w/o the wiper arm attached and is either normal or coming from the LINKAGE under the shell. But I'm not concerned at this point and I'm glad that I decided to investigate the matter.

Last edited by lynns; 08-27-2012 at 10:19 AM.
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