i believe that if you get a 7mm open end wrench and insert it between the male and female ends and just twist it ,the connection will fall apart.[i don't recall exactly if it's a 9mm or 7mm but you will see]

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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