450 slc evaporator

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mercage 80
Dernburg Wagon
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Model you own: w107

450 slc evaporator

Post by mercage 80 » Mon 27 Feb, 2017 6:40 pm

ok I have removed the complete dash out of my 1980 450 slc, and after about a million hrs removed the large climate control box that holds the evaporator and heater coil. What a job. I have the replacement parts and I am about to embark on an incredible journey remembering how the hell it all went back together. My first problem I will encounter is that all the flaps in the box open and close but do not seal properly. The old foam or felt has worn away or rotted away. Does anyone know how to repair this ? cheers Oh also the heater hoses where connected inside the fire wall under the windscreen? is it the correct method to fit these onto the heater coil prior to installing the box?

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C 111
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Re: 450 slc evaporator

Post by TheMadRacoon » Mon 08 May, 2017 4:42 pm

This is a late reply to your posted questions.

With respect to the flaps in the evaporator box, I recall others here have used foam strips from Clark Rubber. If you can take a sample to them they may be able to help. If the seals are too perished to take a sample, my guess is to ask for a closed-cell foam which will probably seal better. Also guessing a low profile (height) would be better.

The flaps are probably quite dusty too and will require a good clean before installing the new (stick on) foam seals. Bunnings may be able to advise on a cleaner that won't harm the flap body material (plastic?). I don't know if something like WD40 would do as a start - better read the label.

Sorry, I can't help with the heater hoses.
1975 350SLC Astral Silver (725) / Blue (2012, 284,900 km - present.... a real Benz, getting better and better)
1988 190E Deep Blue (900) / Cream (2006, 190,000 km - 2007, ~ 215,000 km .... FSH and still spent big $$$)
1974 280E Reed Green (860) / Bone (1993, 316,700 km - 2004, ~490,000 km and still A1)

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Re: 450 slc evaporator

Post by Bartman4800 » Thu 11 May, 2017 1:40 pm

TheMadRacoon wrote:
. Bunnings may be able to advise on a cleaner that won't harm the flap body material (plastic?). I don't know if something like WD40 would do as a start - better read the label.
That would be the first time you ever get useful advice from Bunnings. The people working there are mostly retirees and mothers :laughing6:

I think brake cleaner could be safely used on the plastic flaps. WD40 will just leave an oily residue which will make more dust stick..

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1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
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