Air Conditioner quick fix, left side warm... - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 07-04-2011, 06:46 PM Thread Starter
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Cool Air Conditioner quick fix, left side warm...

All;
I have a very slow leak in my air conditioner that will require major car dis assembly to repair. The dealer quoted close to 2,000 U$ to repair.
As an alternative I tri4ed and have been using for several seasons, a quick fix procedure. This process will add gas, and all important compressor oil to the system and makes it ice cold again.
Basically, I get a small taper hose, manually fill that hose with Mercedes Benz compressor oil, hook it up, then check the results on the climate display, freon pressure option.
The Pictures...

This shows a 210/E320 but is common to most Mb...
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Last edited by MRBSMITH; 07-04-2011 at 07:02 PM. Reason: pics
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post #2 of 4 (permalink) Old 07-05-2011, 12:09 PM
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Ya know, at the same store where you buy the 134a, they have a couple oz. oil charge in a can with enough 134a to purge the air out of the hose, then invert the can and force the oil in. No air, no mess. Just used one on my Mercedes.

I am a believer in adding some oil to leaky systems. In the past few years I have converted two R-12 systems to 134a. I was not able to find a drop of oil in the compressor or dryer of either system. Both worked fine after the conversion. The '78 Olds 98 has been sold, but the '86 Bronco is still working fine.
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post #3 of 4 (permalink) Old 07-05-2011, 12:30 PM Thread Starter
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Cool To me, the oil is...

the most important part. I was worried that MB had some secret type that I went to the dealer for that.

My car is trans climattal in that it spends fall and winter in the desert LA climate, and spring and summer in the hot humid mid-west. I need good airconditioning.

Does anyone know of any harfull effects if any of too much oil in a system??

I can't get a straight answer from the techs that I have talked to.

B

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post #4 of 4 (permalink) Old 07-05-2011, 12:37 PM
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Good question. I am unclear from your DIY how many CCs of oil you typically add. I know you said you filled the tube but? I'm with you on using MB labelled oil. For that matter, is there anything special about MB 134a?

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Last edited by Musikmann; 07-05-2011 at 12:47 PM.
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