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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #1
Hi folks,

I found this piece at the bottom of driver's door, and it must have been there for a few years or decades; had anyone come across this or has any idea where / how it fits? I can't see its equivalent in the passenger door (not taken apart yet) and EPC diagram isn't super helpful. Note, lock and window up / down works just fine.

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1973 450 SL
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1,913 Posts
It is a window guide that was attached to the window glass. That guide is what rides smoothly in the vertical rails to keep the window in position as it travels. This is a common failure. It requires a special glue to put this guide back on the window successfully.

I have one laying in the bottom of my driver's side door at the moment - made evident by the window rattling when I close the door with the window in the down position. I have become reluctant to pull the door cards on my car until absolutely necessary because the masonite is deteriorating badly around the holes where the expanding door plugs are inset. I need to rebuild these door cards but that is a big job; best done on a spare set.
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #3
Thanks Brad! Appreciate your feedback. I know what you mean about pulling off the door cards, that's why I want to fix everything in one sweep. ow "special" does this glue need to be? Will regular window glue that I'll use to refit the windscreen suffice for this?
 

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1987 560SL, 2000 Kawasaki W650
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977 Posts
Regarding the door cards, last time I had mine off to fix a rattling window, I liberally applied some wood hardener to make it less likely to crumble.
 

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Premium Member
1983 380SL, 2000 S430, 1991 420SEL (retired) - RHD
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5,339 Posts
That guide block attaches at the bottom of the window glass at the rear. The front ones are longer.They are originally press fit with some sort of adhesive.The hole is for a screw to adjust the fit but not all cars have them Note that it is meant to be tight on the glass but free on the rail. There is a nylon insert to reduce rattle between the guide block and the window rail. A couple of pics.
 

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1987 560SL, 2000 Kawasaki W650
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977 Posts
A good replacement for the sheet plastic found on the door is clear contact paper, or shelf liner, whatever it’s called. I covered over everything and then used a utility knife to cut openings for the door latch and so forth. I epoxied thin sheets of fiberglass to fix cracks. I used the same to fix the broken plastic door pocket.
 

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Premium Member
1983 380SL, 2000 S430, 1991 420SEL (retired) - RHD
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5,339 Posts
A good replacement for the sheet plastic found on the door is clear contact paper, or shelf liner, whatever it’s called. I covered over everything and then used a utility knife to cut openings for the door latch and so forth. I epoxied thin sheets of fiberglass to fix cracks. I used the same to fix the broken plastic door pocket.
Good advice. I wish I had done this instead of replacing the door card. I used really good quality very thin ply but it was a real PITA as nothing about the various holes is symmetrical .They aren't parallel or equidistant and lining up all the clip holes is really tricky as the old card was badly warped and almost useless as a template.
 

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1983 380SL, 2000 S430, 1991 420SEL (retired) - RHD
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5,339 Posts
The adhesive I used on the blocks was Permatex sealant adhesive but I think E6000 would work just as well/
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #11
Thank you @therling and @Aussiemerc , thats great advice. I've both Permatex and E6000 so I'm sure one of them will work! Re sheet plastic for the door panel, that's still availale from MB and costs something like $2 per sheet. And yes, there are dozens of staples :D
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #12
@cushjbc @Aussiemerc would you guys agree that the block this thread began with is circled in red on the s/shot below? If so than I'm in trouble as I'm short one piece - the driver's side was at the bottom of the door, but the passenger's glass is missing it - and I assume I can't get a replacement without buying the whole glass...


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1979 450SL UK spec
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1,306 Posts
Yes, that is the correct position. I'm not sure about MB, but I do remember seeing aftermarket ones somewhere in Germany.

Would be worth a post on sternzeit-107 if you can't find one.

PS, the metal part should also have a plastic insert.

See here
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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Discussion Starter #14
Thanks Jim, as always! I found the guide in the SLShop, 47GBP so could be worse. I checked the usual German websites but no sign of that.
 

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560SL '88 Suzuki GS1000E '78
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150 Posts
Hi Miko,
I've already had the same problem. As Jim metioned, you can find a lot of discussion/information at sternzeit-107, recommendations for glue as well.
I used a strong 2-component adhesive. I don't wanted this guides to come off again, so I decided to fix them forever. Because the rubber stripes were gone, I substituted them with stripes from cable ties. So I had a minimal pressfit and the rest was filled with the 2C-adhesive.
Working perfect since 3 years.
But! Make sure that you found the right postion before apply the adhesive...
Martin
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #16
Thanks Martin! I plan to use E6000 which is a killer. Do you have any pics of the final design? The reason I ask is because the new piece on the SL Shop website seems to be metal only, and I'm not sure what the correct position of the guide should be,other than pics from Aussie above...
 

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560SL '88 Suzuki GS1000E '78
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150 Posts
Hi Miko, sorry - maybe I have some pics, but I don't know where...
But just follow this link:
Regards Martin
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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1,476 Posts
Discussion Starter #19
Thank you Martin and Jim, that's very, very helpful! Looks like the guide ought to be an inch or so from the bottom. I'm yet to clean the glass, perhaps old marks will show up and indicate where it used to sit.
 
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