Vac pods or whatever behind the dash, I need part numbers...
 

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...



:confused: :confused: :confused:

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

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.:o

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. :rolleyes:

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.

Nah.....it takes two hands with two screwdrivers and some care. I opened up both of these bad boys in less than 5 minutes. The plastic is strong as hell and is not about to break.

Nothing wrong with rebuilding the single diaphragm units or the small section of the dual diaphragm units.

BTW, you don't take the dash apart on a W126........

I did search around on Fastlane to no avail. Hence my second thread regarding this matter, no one in the other section wanted to help...

Keep me posted on them, I don't mind shelling out the ~$20/ea if it makes it easier and more trouble free down the line.

Do yourself a favor Brian and totally remove the damper door in the center vent damper. Plug the vacuum line to the center pod. Use the slide to shut off the vent as needed.

Isn't there something you can do to make the A/C recirculate 100% instead of 80%?

I picked the vac pod setup from a low mile 560 today (where my motor is coming from for the 420) as I thought it would work. :o Oh well, just a good extra part for my SDL, the 420 has a new PBU and pod setup. :)

Well......the big duals are $50.00 each.:eek:

The diaphragms for the singles are $5.50 each........:cool:

Your choice............

I don't think either choice is better than the other. I'd rebuild the singles in a heartbeat if that was my problem. Unfortunately not.

If you have a Mityvac, you need to test each circuit to find your problem units. Be careful......as some circuits feed two elements via a "T". I almost condemned my dash flap element (a real PITA to remove) when the problem was a T that went to the main flap.

I was reading about that. You then get heat from the center vents, correct?

How is it possible to get anywhere near the center vent damper? It appears to be buried way back behind the CCU. I've got the CCU removed, but, it doesn't look good for disconnecting the pod from the damper door as best as I can tell.

I thought there were only 7 of them. :confused:

Brian - I was thinking you had the dash off. You are right - it is impossible to get to the damper door with it in place.

All the vacuum elements are listed in Fast Lane

PART NUMBER SEARCH RESULTS WITH PRICES

Vehicle 1985 Mercedes Benz 300SD
Part: Vacuum Element


PART NUMBER SEARCH RESULTS WITH PRICES

Vehicle 1985 Mercedes Benz 300SD
Part: Vacuum Element

Note: Defroster Flap
Located @ heater case.



Product Brand Availability Retail Our Price

O4010-32455 Vacuum Element Behr IN STOCK $76.00 $56.97