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post #1 of 6 (permalink) Old 03-11-2007, 07:04 PM Thread Starter
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Vehicle: 1973 mercedes benz 280 se 4.5
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heater

i have a 1973 280 se in very, very good condition. exept for the heater. i knew that it would be a job but i am hard headed even though everyone said that i would be better off just driving something else in the winter. i have removed every thing except the vent for the defroster on the drivers side, and the air conditioner, do these two bastards really have to come out because it is a hell of a lot of work, like removing the hand and foot brake bracket, and a lot of other crap. by the way it is a 4.5 litre.
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post #2 of 6 (permalink) Old 03-15-2007, 06:28 PM
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I did this, and it IS a bear. I took out everything - the dash, the heater levers, the radio, the glove box, the AC, the dash wood, everything. It's a bear. Did I say it's a bear? While you're in there, check the valves, check the heat exchanger, and if you have doubts about them, change the control lever things - they get brittle and the tabs break off over time. In my case, I replaced the heater blower motor, and I think it was all well worth it. I paid almost $300 for the motor (eBay), $50 to get the exchanger pressure tested, and while it was all off, I refinished the dash wood. How's your speedo? This would be a good time to replace/fix it if it's bad ...

Good luck!
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post #3 of 6 (permalink) Old 03-15-2007, 09:21 PM Thread Starter
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i am refinishing the dash right now with a vacumn bag system and some walnut burl veneer. i did manage to get that core out though, the two valves are corroded and i have looked everywhere for a replacement core or a rebuild for the core valves and i haven't located anything so far.
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post #4 of 6 (permalink) Old 03-17-2007, 12:59 PM
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Take it to a radiator shop and have them re-work it. I think that if the core is good (that is, not leaking, and it stands up to a pressure test), the valves can be replaced either with Mercedes parts, or general off-the-shelf parts. After all, a valve is a valve is a valve. Let someone else get a headache in finding parts!

You might try Adsit Company, Inc. | New, used and rebuilt parts for Mercedes Benz automobiles for parts - they have a pretty good inventory. I've got some other contacts too, if that fails.

And you're finishing the dash with a vacuum bag system?? I'm not sure I follow...
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post #5 of 6 (permalink) Old 03-19-2007, 09:28 PM Thread Starter
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a vacumn bag is one way of putting a new veneer on an existing template. it is pretty much a pump that will vacumn out the air and a bag. mine is ghetto, it is an A.C. compressor out of an old caddilac and a waterbed bladder. it will suck out all of the air under many tons of pressure. i have made 7 ply rock maple skateboards using an existing skateboard as a template. my dash on the mercedes was faded and the THICK varnish was all cracked, so i chipped that shit off and put a 1mm thick veneer on. i just found this site like a week ago because i got my mercedes two weeks ago and when i ran into the problem with the heater i knew i would need some info, other than that crappy chiltons manual, and i really apreciate your help.how do i post a post a picture? you could see how the dash turned out
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post #6 of 6 (permalink) Old 03-20-2007, 04:51 PM
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Ohhh, gotcha. The veneer on mine was finally eaten away with boat varnish remover. It took a LONG time, and I swear, it was plastic! I had to take a jeweler's screwdriver and chip off the remaining gunk. Pain in the rear too. The final product turned out nice though. As for posting pictures, I'm not sure - I tried posting pics of my own, but was unsuccessful.

Did you redo the door wood too? Is that on the table? I might have a couple pieces to give you, if you want them (available in July/Aug, once I move).
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