[W126 Coupe] Air Conditioning

[antinone]

I had similar problems with my 380SEC Air.....Not Cold enough.
My normally reliable MB mechanic recharded it with no improvement.
The problem was diagnosed and corrected by an Air Conditioning specialist.

The door that sucks air was stuck and always the system always sucked air 
from the outside. On hot days the new air in was always too hot to cool.

The simple fix was to wire it closed.... it always sucks air from the inside
the cabin.

Very simple and inexpensive fix.

Huge improvement.

=============================================================================


Conversions to R-134, I have done 4.  It works fine so long as you observe
the process for making the conversion.  Riding on a 98 degree day in a black
SEC and staying icy cold is a reality if the conversion is done right.
Ditto with any MB so long as you observe the process.  I recommend you do it
yourself using the proper gear (costs a few bucks) and take your time vs.
relying on a mechanic who seeds your thoughts with failure such as you
describe with blowing all the seals.  This suggests he has not done a
conversion or if he did, he failed to follow the process or he worked on a
system that was previously damaged and just let go with the conversion.

Dick


----- Original Message ----- 
From: "a figment of the imagination" <figstir at yahoo.com>
To: <mbcoupes at mbcoupes.com>
Sent: Wednesday, August 10, 2005 8:33 PM
Subject: [W126 Coupe] Air Conditioning



>> Hi all,
>>
>> It is hot as heck where I live. My A/C blows out hot
>> air that's hotter than the air outside. So...
>>
>> Has anyone been able to successfully convert their A/C
>> system on their SEC to use RF134 instead of the RF12
>> refrigerant?
>>
>> If so, can a simple $50 kit at say Autozone or
>> O'Reilly's do it?
>>
>> A MBZ salvage yard owner told me that if you inject
>> RF134 into a MBZ A/C system, after flushing the RF12
>> out, that the pressure from the RF134 would be so high
>> that it will blow all the seals, damage the condenser,
>> expansion valve, etc....  (true/false?)
>>
>> However, someone else told me that this is not true
>> and did the conversion himself on his car.  However,
>> this person owns a Buick, so that opens up the
>> question, even though he supposedly has a license for
>> A/C work and was confident of his knowledge.
>>
>> Any recommendations?
>>
>> Thank ya!
>>
>> -Figment
>>
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