Rain Leaks into cabin '79 280CE (2 door coupe) - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 08-30-2011, 07:54 PM Thread Starter
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Date registered: May 2011
Vehicle: Merc 280CE W123 1979 (2 door)
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Question Rain Leaks into cabin '79 280CE (2 door coupe)

Anyone suggest the first place to start to trace leaks that somehow have an invisible entry trail until they pond on the floor ?
I dont want to hand it over to a 'shop as the problem is a potential blank cheque. With modern silicons and a reasonable amount of skill and patience I would think it could be done but where to start ?
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post #2 of 8 (permalink) Old 08-31-2011, 06:38 AM
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Any chance you could tell us where exactly the water is ponding (front/rear/driver side/passenger side)?

Felicita e un bicchiere di vino con un panino.
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post #3 of 8 (permalink) Old 08-31-2011, 04:18 PM Thread Starter
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Thanks Flyboyike,
Remember this is a RHD model for Australia. OK I think the problem we have here is that the rear floor pan is the low point of the floor except for the "barrier" created by the crossmember under the front of the front seats.
So I think the answer is both sides of the back seat floor in the first instance. I have (since posting) used some silicone around the top of the door pillar as I suspect the seal on the pillarless section between the front and rear window may be suspect. In addition I have sparingly sealed the area around the connectors on the chrome trim around the rear window. As rain is somewhat unpredictable here in 'Oz I put a hose over it today. What is the background of the aircraft in your post?
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post #4 of 8 (permalink) Old 08-31-2011, 04:38 PM
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Quote:
Originally Posted by plantac View Post
What is the background of the aircraft in your post?

Ummm, that would be the "sky". Sorry, couldn't resist.

Don't use a silicone product. Use a butyl rubber type. Silicone can't handle the sun and will actually cause more corrosion as the acetic acid released in the curing process will etch the sheet metal.
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post #5 of 8 (permalink) Old 08-31-2011, 04:49 PM
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What is the background of the aircraft in your post?
Prototype CRJ-900.

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post #6 of 8 (permalink) Old 09-02-2011, 06:23 AM
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I would suggest you replace the front windshield seal with one from the dealer. Yes, I know, there is that dreaded 6 letter word. The seals are notorious for leaking and the water runs right to the rear floor. The aftermarket seals are crap so spend the extra money for a good one. Put chalk or MB windshield sealer (part number 001 989 31 20) in the metal channel before installing the glass and then put the flexible windshield sealer from MB in between the glass and seal after install. The front windshield is the culprit 99% of the time. DO NOT try to remove the chrome before removing the glass, it will bend beyond repair. Cut the seal out then remove chrome carefully and reinstall it into the seal channel after fixing seal to glass, then rope the seal in carefully. A good glass company should be able to help you with this. Good liuck. CF.

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It looks a whole lot more like it does today than it did yesterday?
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post #7 of 8 (permalink) Old 09-02-2011, 06:44 AM
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I believe he meant to say "caulk" in place of "chalk". Once again, don't use silicone, use butyl rubber or a similar product made for windscreen sealing. .
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post #8 of 8 (permalink) Old 09-02-2011, 03:44 PM
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Does your car have a sunroof? Lots of MB's have clogged rain gutters (small holes) that allow the water to drain out, when they become clogged over time with leaves, dirt and the like the water has nowhere to go but your interior. The shop could properly clean these out for you, or you may be able to using a plastic coated wire of some sort to jab out any debris.

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