[W126 Coupe] Switch to R134

[airedale at sbcglobal.net]

Here is another thought!
Quote:
Originally Posted by twochaps
He said he only needed to vacuum out the old stuff, install a couple of new 
couplings and then add the new R134 or whatever it is called. Question: Can 
or should this be done without ruining the old A/C system?



Yes what he said is true. BUT, in a year or 2 you will be replacing the 
compressor and flushing the system due to a compressor failure.

Read this, it's called "black death"

http://www.ackits.com/index.cfm?fus...n=black%20death

So yes you can install R134A cheaply but you will pay for your mechanics 
lousy work later.

Keep the car R12 if you can. If the car has "some " freon pressure, have the 
system evacuated, test the system for leaks, It should hold the vacuum for 
30-45 minutes. If it does then you have slowly leaked the freon. 1/2 lb. 
leak a year is acceptable, not good, but acceptable. If the system holds the 
vacuum then have the proper amount of R12 installed, I would include a dye 
for any future leak checks.

Dave
__________________
1970 220D owned1980-1990
1980 240D owned1990-1992
1982 300TD owned1992-1993
1986 300SDL, owned1993-2004
1999 E300 owned 1999-2003
1982 300TD, 189,000mi, owned since 1990
1988 560SL, 89,000mi, owned since 1995
1965 Mustang Fastback (My sons)
1983 240D, 156,000mi(My daughers

I have had a HVAC license for the past 22 years and I an not sure what you 
mean by  WE ALL KNOW THIS IS NOT LIKLY TO BE THE CASE.
----- Original Message ----- 
From: FOOTFXR52 at aol.com
To: mbcoupes at mbcoupes.com
Sent: Friday, August 12, 2005 5:40 PM
Subject: Re: [W126 Coupe] Switch to R134


In a message dated 8/12/2005 11:06:17 AM Eastern Standard Time, 
airedale at sbcglobal.net writes:
So you're going to spend $300, so you can save about $80 on refrigerant. I'm
an older fellow and learned my math before what was called "New Math" came
along. But, I fully expect that even with "New Math" you will find changing
to 134 will cost an extra $220.
AH, BUT THIS SOUND LOGIC ASSUMES THIS TO BE A ONE TIME EVENT AND WE ALL KNOW 
THIS IS NOT LIKLY TO BE THE CASE.

ROBIN



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W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.
----- Original Message ----- 
From: FOOTFXR52 at aol.com
To: mbcoupes at mbcoupes.com
Sent: Friday, August 12, 2005 5:40 PM
Subject: Re: [W126 Coupe] Switch to R134


In a message dated 8/12/2005 11:06:17 AM Eastern Standard Time, 
airedale at sbcglobal.net writes:
So you're going to spend $300, so you can save about $80 on refrigerant. I'm
an older fellow and learned my math before what was called "New Math" came
along. But, I fully expect that even with "New Math" you will find changing
to 134 will cost an extra $220.
AH, BUT THIS SOUND LOGIC ASSUMES THIS TO BE A ONE TIME EVENT AND WE ALL KNOW 
THIS IS NOT LIKLY TO BE THE CASE.

ROBIN



The MB Coupes Website!
W126 SEC Mailing List
Postings remain property of MB Coupes, L.L.C.