Yes... I was VERY disappointed to find this leak in the syatem... DO NOT USE WRENCHES TO ATTACH SENDERS TO DRYERS!!!

They will thread in with finger force just fine...

A trick I use is set the parts together and gently unscrew the parts until you feel the threads click. Then stop and gently thread together.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I will definitely keep this in mind.

Another good plug for the pressure test method after reassembly. I had a small cylinder of dry co2 John loaned me to put pressure on the system. The leak was very slight but definitely perceptible on the gauges if you waited a few minutes. You could also hear it hissing ever so slightly. This is with 150 psi on the system.

Unfortunately I used up almost all the co2 for flushing and used up all the remaining co2 trying to chase the leak until I realized what I had done. Went up to John's yesterday morning hoping that he had a fix for it but no. So I am getting my new parts in on Friday and I assure you that I will handle those like a brain surgeon and then hopefully I will be able to get back to riding with ac after a month.

If I had gone straight to pulling a vacuum it would likely not have been noticeable since you are effectively only putting -15 psi on the system. Except it would have sucked moisture in that bad joint and contaminated the system.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech