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Old 07-06-2008, 01:17 PM
Registered User
Join Date: Dec 2005
Location: Malta Europe
Posts: 24
Charging Aircondition

I have a Mercedes 190 2.5 diesel and it needs a top up.
Now it's getting hot here in MALTA 35C and more.
Can some one tell me exactly how to check and add refrigerant in my Mercedes.The gas is R12 and I have a cylinder because I bought a cylinder few years ago.

How much the low side will read and how much the high side will read?
How much I will rev the engine 2000 rpm?


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Old 07-07-2008, 03:31 PM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
35psi on the low side and approx 250psi on the high side in the temps that you suggest.
David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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Old 07-07-2008, 04:13 PM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
With R-12 , you can use the eye-sight glass for charging capacity.

A Dalton
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