Anyone know what the part numbers are for those lil things that direct the air vents in my SD? I can't find anything online and I need to finish my AC stuff up soon...

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Try this.
www.autoluxmbz.com/index.html

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1983 300SD
200000miles

I got the SD all torn apart for that exact same situation.

It appears that you can rebuild the single diaphragm elements by installing the replacement diaphragms from AutoLux. But, the large section of the dual diaphragm element should not be rebuilt using their product because the travel will be limited due to the nature of the revised design.

I've recently purchased two new dual diaphragm units.......one for the main flaps and one for the defroster flaps. The remainder are OK. The p/n will vary depending on whether you have an early or late version. In my case, as usual, the p/n specified does not match the hardware on the vehicle.

I'll get them in a couple of days.........we'll see if they work.

I believe this - 0008000478 to be the part number for those pods. At least what I found after scouring pages upon pages of part numbers.

Which number pods are the ones that typically go bad? My blower shoots ~80-85% of the airflow to the windshield.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Well, I've got the experience of one vehicle to tell you which one's typically go bad.

In this case, the dual diaphragms for the defrost and the main flap both went bad. You cannot tell anything from the fact that you only have defrost. One bad diaphragm in the system will kill it, if that line is open. When it's leaking, you only get defrost.

Look at BUY PARTS on the top of this web site.
Look under "Vacuum Element"
They don't have them listed under heating.
I won't try to rebuild one of these it takes 4 hands with screwdrivers in each hand to open one up. The plastic is very brittle and tend to break. If you go to all the trouble to take apart a dash do it right.

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2009 CLS550 55,000
2004 ML350 144,000
2004 X5 95,000
2002 X5 165,000
1996 320S 155,000 (sold)
1991 190E 192,000 (sold)
1989 300SE 160,00 (sold)
1984 300D 210,000 owned since 85, (sold)
1984 300SD 160,000 (sold)