SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: R230 cowl around wiper arms

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Old Nov 28, 2018 | 01:30 PM
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Frederick NL's Avatar
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2005 R 230 SL350 (M112 3.7). Sold the 1966 W113 230SL recently
R230 cowl around wiper arms

Hi, I need to replace the plastic cowl right under the windscreen (230 830 0013). It runs from side to side and around the three wiper axles. Question: is the part glued onto the body at its top rim, or bolted on only?

I ordered a replacement with Moldparts1993 on eBay, will let you guys know if that Tampa - Netherlands deal works out as it should.
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Old Nov 28, 2018 | 10:38 PM
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I have not removed it on an R230, but if it's like other cars, It's clipped in place and over time, it just becomes so brittle that removal breaks it.
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Old Nov 29, 2018 | 03:05 AM
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Thanks, man. Will have to see if the 2003 part I ordered is still solid. Florida is a sunny state, UV may have been harsh..
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Old Feb 6, 2019 | 02:00 AM
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Changed the part (as described above). Along it’s top edge, from left to right, there’s a zipper-like protrusion that clicks into a narrow channel under rhe windscreen. Is that supposed to be a water tight seal? I’m missing some ‘grip’ in a small middle section, so the cowl is not totally snug against the car there. Should I be worried?
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Old Feb 6, 2019 | 08:55 PM
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Originally Posted by Frederick NL
Changed the part (as described above). Along it’s top edge, from left to right, there’s a zipper-like protrusion that clicks into a narrow channel under rhe windscreen. Is that supposed to be a water tight seal? I’m missing some ‘grip’ in a small middle section, so the cowl is not totally snug against the car there. Should I be worried?
Kijk met een tuin slang of er water naar binnen komt - I don't think that's a problem in the front. Do you have pictures and part numbers of the part?

MVG
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Old Feb 7, 2019 | 02:46 AM
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Goedemorgen, good morning,

I even got a WIS doc from this site.
230 830 0013



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Old Feb 9, 2019 | 11:13 AM
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Hi all,
1- my question above still stands, notwithstanding my fellow Dutchman’s reaction
2- I noticed that water passes between a least one wiper arm spindle and its rubber grommet (surround). Of course water then leaks down along the spindle. And hopefully not into the mechanism/bearing. Does anyone know the order number for these grommets and how they are called?
I might add some grease to the spindles, but new flexible rubber sounds like a better idea.
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Old Feb 9, 2019 | 12:13 PM
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The seal of the water collector against the glass is not water tight, but it should be enough to shed 95% of the water. The rest will end up in a channel at the base of the glass and be directed to the side drain areas. I suspect the grommets for the wiper spindle are part of the water collector - I don't see them listed as a separate part.
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Old Feb 9, 2019 | 01:14 PM
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Thank you.
I found as part number A0099979581. First online and then -after a clean up under a tap- in the grommets themselves... I don’t know if that is an MB number.
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Old Feb 9, 2019 | 05:26 PM
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Good catch! Yes, that is an available part, just not listed for the R230. It is listed for the W221, so you should be able to buy them from a dealer.
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Old Feb 12, 2019 | 05:07 AM
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The dealer has them, so I ordered 3 wiper spindle grommets. Previously, a German dealer mistakenly replaced the wiper mechanism/motor, so that is a new part. As noted above I noticed water marks on a spindle. There’s noticeable play on the old grommets. Should I grease the spindle/new grommet (and with what)?

Last edited by Frederick NL; Feb 12, 2019 at 05:13 AM.
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Old Feb 12, 2019 | 10:39 AM
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I might put a thing coating of standard lithium grease on them, like what you'd use for suspension bushings.
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Old Feb 13, 2019 | 08:17 AM
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I prefer...

Originally Posted by Rudeney
I might put a thing coating of standard lithium grease on them, like what you'd use for suspension bushings.
I use DOW Corning 1111 as it a none petroleum based silicone (it does not deteriorate) that I use on all rubber seals and O-rings.

Last edited by Hendrik Koster; Feb 13, 2019 at 08:19 AM.
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Old Feb 13, 2019 | 12:53 PM
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Frederick NL. I meant i read that this cover is fasten with 2 plastic handles you will have to loosen to take the cover so you get access for cleaning stuff that gathers under the cover over time?

Last edited by TheSaint; Feb 13, 2019 at 12:56 PM.
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Old Feb 13, 2019 | 01:54 PM
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Thanks, Hendrik. Will look into an equivalent of that.
.
The Saint: the cowl sits under two rubber parts left and right. Plus it has three drains that spill into three ducts, pulling those apart (up) is easy. It is the only possibility to check the middle duct for dirt. Next, the cowl has a ridge, 2cm from it’s top edge, that runs from side to side. You pull that ‘up’ bit by bit, just use a finger (see pics).
Meanwhile, you have to release a slide-in coupling between an hydraulic reservoir and a fuse box. Just push it back, the ‘button’ on it is a fixed piece. Try a bit of fiddling which is the best moment to release it (not first and not last).
Of course you remove the wiper arms first. I pressed those from their conical spindles with pliers, protecting the spindle with its nut screwed on upside down and with cloth all around.




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Old Feb 16, 2019 | 12:39 PM
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Some TLC below the windscreen



Stubborn dirt on the windscreen
.


One happy wiper mechanism
.

I received and replaced the rubber grommets around my wipers arms (see pictures in post above for an old one). BIG difference. The old ones were slack and hardened, the new ones sit tight around their spindle. Looks to me they’re meant to actually keep water out, where the old ones clearly failed. You might consider doing the swap in order to keep what’s under there better protected, especially the wiper mechanism.
.
I greased the grommets up, both at their opening in the middle and in the surrounding groove. Perhaps the latter was a mistake, as one of them rotates along with the wiper arm now.
.
After removing the black plastic cowl (I gave some tips on this earlier in this thread) I noticed an edge of old dirt on the windscreen (photo). This proved to be impossible to remove with thinner or white spirit. Thinking it could be scale I also tried vinegar, but to no avail. The stuff won’t be intimidated by anything I tried on it, so it’s still lurking at me along the edge of the cowl.
The cowl attaches to two lower situated points, so be aware of that when you pull it out. One is a lip that holds under the plastic grille of the cabin air intake, the other slides into a metal fork. The plastic looks as if it has a turning lock there, but it’s just a one piece fixture. The cowl that I replaced was broken there, understandably, so take a look first (torch!) before you loose your patience.
.
The cowl has a protrusion that clicks into a slot that runs along the windscreen (see photos in a post above). A section of it sat slightly slack, so I stuck insulation tape over the whole length of it, widening the protusion by 0.2mm. It seems to do the trick.
.
And while at it, why not give some TLC to those wiper arms. A WD40 clean followed by a wax buff, also on the plastic turtle shield, makes a world of difference. (Photo). Too bad they lay hidden below the bonnet again...

Last edited by Frederick NL; Feb 16, 2019 at 03:09 PM.
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Old Feb 16, 2019 | 02:10 PM
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That's one nice looking wiper arm!
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Old Feb 17, 2019 | 02:06 PM
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Trivial pursuit: the lower (black) part of the windscreen has several tiny ‘windows’ in the black masking. Some seem useful for aligning the wipers with (I wish I had noticed), but there are more of them. Does anyone know what these are for? Photo: just above wiper tip.

Last edited by Frederick NL; Feb 18, 2019 at 11:32 AM.
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Old Feb 17, 2019 | 03:42 PM
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I think they are used for aligning the windshield when installing the glass.
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Old Feb 18, 2019 | 07:20 AM
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Thanks for poting the pictures and describing the procedure of the work for how to to do this job Frderick

I thought that the tiny black "windows" just was a transition from the all black to the clear part of the windshield, Never thought of what Rudenay says that they can be for installing the winshield correct. That makes sense to me

Last edited by TheSaint; Feb 18, 2019 at 07:22 AM.
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Old Feb 18, 2019 | 07:45 AM
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I was talking about small transparent rectangulars in the black zone. You mention the black dots in the transition zone. There’s interesting stuff about those dots here (interesting pay off at the end):

https://jalopnik.com/heres-what-thos...r-c-1791075995
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Old Feb 21, 2019 | 02:54 PM
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Originally Posted by Frederick NL
I was talking about small transparent rectangulars in the black zone. You mention the black dots in the transition zone. There’s interesting stuff about those dots here (interesting pay off at the end):

https://jalopnik.com/heres-what-thos...r-c-1791075995
I just noticed it now when i saw that it was circled in red I even saw it right before i read this post

I really got that wrong
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Old Oct 31, 2022 | 09:49 AM
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I am needing a new water collector but Mercedes no longer makes part # 230 830 00 13. I tried to look up "Moldparts1993" and could not not find that seller on eBay. Could you post a link to "Moldparts1993" "eBay account? Any other suggestions on how to get one?

Last edited by Swamp_Fox; Oct 31, 2022 at 11:12 AM.
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Old Oct 31, 2022 | 05:52 PM
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I looked up the mail conversations for you but according to eBay that account no longer exists. They called it a windscreen water collector. With the part number you should be able to find one from a breaker.

Last edited by Frederick NL; Oct 31, 2022 at 06:03 PM.
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