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engatwork 08-25-2002 01:28 PM

300TD drivers floorboard - what is this?
I have been looking real close at the 300TD and this afternoon I pulled the carpet from the drivers floorboard on the '85 300TD and this is what I've found. What in the world is this "mat" type material. It seems to be rigid and glued to the floor pan. I do not see any rust but there does seem to be some moisture collected between it and the metal floorpan. I will get to the front and rear windshield seals in due time and I am working under the assumption that the water is coming in through the w/s seal. My way of thinking is that this "material" should be removed to allow the water to drain better or even evaporate faster. It also looks like, if I remove it, it will be destroyed. And it looks pretty cumbersome to try to replace.

Any thought and opinions are appreciated.

leathermang 08-25-2002 04:17 PM

I would guess it is a combo of sound deadening... and floor level compesation to match the black air ducts shown in the pic... if you take it out and do not replace it you might hear more of your tires noise than you really want to...and also your diesel engine sound reflected off the road surface...

speedy300Dturbo 08-25-2002 07:23 PM

I never bothered to remove that panel on my old W123. Maybe a heat gun would work to get it off.

Shep 08-25-2002 07:41 PM

My 85 300TDT had that same material, as does my current 72 280 SEL 4.5. I agree with the post above. It's for sound deadening and to compensate for the difference between the height of the floorplan and the top of the air duct running on top of it. It's hard to find for my SEL so I'm not sure how lucky you'll be if you rip it out and then decide you want it back.

engatwork 08-25-2002 08:16 PM

I'm going to leave it alone. Looks like it is in too good a condition to rip out. Once I get the winshield seal replaced it should be fine.

speedy300Dturbo 08-25-2002 11:45 PM

A nice day in the sun should dry out any moisture under there!

The Warden 08-26-2002 05:21 PM

Not necessarily!

I've got the same insulation stuff on my 300D. After the rear seat floorboards were flooded to the point that it seeped into the front floorboards, I removed the floor mats and carpeting and haven't put them back yet (after a month and a half; I cleaned them once but it looks like they need it again). In the insulation, there's a mark right about where I put my right heel to work the throttle and brake pedal, where the insulation's caved in a bit. At the bottom if that "mark", it's still wet to the point wher eif I tough it with my finger, it'll come back wet. The weather here's been warm and fairly dry since I got the car up here, and it still hasn't dried I'm scared that the metal pan underneath's rusting something fierce, and the onyl way to get it out will be to pull that insulation up (and I'd like to put it back :))...

I was actually thinking about posting a question on this. Ideas appreciated...thanks!

Wallknight 08-26-2002 10:25 PM

on the 82 300d's that material is glued to the rug itself. Mine is shot, so I'm just going to get some old foam rubber or styrofoam on of these days.

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