Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion > Alternative Fuels

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-14-2013, 05:51 PM
Registered User
 
Join Date: Aug 2013
Location: Williamsburg, VA
Posts: 3
AIR CONDITIONING '82 240D

I purchased my great MB a year ago. I know when I turn the air conditioning on, it feels pretty cool, not cold on the feet.
I want to get my refrigerant checked. It does not seem to have a leak.

I am hearing different things on having R-12 added to the R-12 that is in the system, or having HVAC guy remove R-12 and refill with the new 134?

I heard if possible stick with the R-12 when I can find some. Others say the newer refrigerant is good.

Please give me feedback on experience.

TC
Reply With Quote
  #2  
Old 08-14-2013, 06:22 PM
Mölyapina's Avatar
User title not in use
 
Join Date: Oct 2012
Location: Chelmsford, Massachusetts
Posts: 4,353
Hi Tina,

You may have better luck with this is you post it in the main discussion (Diesel Discussion) -- a lot of more folks look at.

To answer your question, though, a system that has R12 should only be recharged with R12. But how do you get R12? That's the hitch. R12 has not been available to the general public since the early 90s, and it is expensive (~$30/lb). You can find it on Craigslist, but then you will see many ads that say that you need a 609 certification. This is because it is not legal for you to buy it without a certification from the EPA known as the 609. The good news is that you can do the reading online and take a test for the most basic certification -- all that you need to buy R12 -- for $25. I'm working on the certification this month.

However, if you have lost R12, you have a leak, and it will quickly get expensive to be recharging R12 all the time. You will want to find the leak. Auto parts stores sell leak detection kits -- however, I don't recall if they can only be used with R134a. Anyway, once you have found the leak, evacuate your system into an evacuation cylinder, which you can find for ~$30 if you buy the single-use one. Then replace the part that was leaking, and fill your system back up. If the hoses are showing their age, you may just want to replace everything at once.

You can also use R134a, but that is more involved. This is where I would suggest you ask in Diesel Discussion, as I don't know enough yet to competently comment on it. Beware, you will get a barrage of different opinions .
__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
Reply With Quote
  #3  
Old 12-25-2013, 02:27 PM
home of 4,5,6,8 cylinders
 
Join Date: Jul 2005
Location: Vancouver BC
Posts: 504
a/c cold air only comes off vent on mid level, some comes out the defrost vent, definitely won't give u cold feet.
Go check other cars first.
u can spend a few bucks still won't have your feet cold.

Quote:
Originally Posted by tinacunningham13 View Post
I purchased my great MB a year ago. I know when I turn the air conditioning on, it feels pretty cool, not cold on the feet.
I want to get my refrigerant checked. It does not seem to have a leak.

I am hearing different things on having R-12 added to the R-12 that is in the system, or having HVAC guy remove R-12 and refill with the new 134?

I heard if possible stick with the R-12 when I can find some. Others say the newer refrigerant is good.

Please give me feedback on experience.

TC
__________________
Reply With Quote
  #4  
Old 12-31-2013, 12:38 PM
Registered User
 
Join Date: Aug 2005
Location: Oregon
Posts: 314
Quote:
Originally Posted by SD300 View Post
a/c cold air only comes off vent on mid level, some comes out the defrost vent, definitely won't give u cold feet...
Not in a 240D. AC air can be directed to the floor vents.
__________________
'79 240D
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page