Mercedes Benz repair: Air conditioning and heat, 1985 mercedes 380sl, mercedes benz 380sl

Question
1985, Mercedes, 380SL, 39000, New York, NY
I know very little about this car as I just purchased it and have had it for about a month. The problems: With the heat&A/C controls set to off (not auto) heat comes out the vents? A/C worked until a couple of days ago when A/C clutch (front of the A/C compressor) caught fire while the A/C set to? Put it out quickly with some water. Looks like the front of the assembly burned. I don't know why it caught fire or what to check for the cause. I don’t think the heat damaged the compressor, except for the clutch and I cut off the belt to be on the safe side. Its summer and I could do without the A/C for now but having heat come out of the vents is very uncomfortable. What should I do?

Fred  

Answer
Your mono valve diaphragm is broken.
The unit is attached to the fire wall in the engine compartment.

Here is a thread with DIY.
Monovalve Problems
http://www.mercedesshop.com/shopforum/showthread.php3?p=1026761

Possible local MB shops.
New York
http://www.mercedesshop.com/shopforum/showthread.php?t=144117


PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1985 Mercedes Benz 380SL
Part: Mono Valve Repair Kit
 Note:  Heater Valve
Electromagnetic heater valve.     
 Chassis: 009934-
R3023-15174 Mono Valve Repair Kit Bosch IN STOCK $60.75  
  
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...