Bingo, the Behr/China version here as well, no sight glass, but if that is just a cover... I'll pry it up. That' great to know, I though that was a metal piece screwed in. I saw your (ismalley) thread talking about german parts made in China with regards to the drier.

Plenty of air-flow, aux fans kick on when compressor is running. That all seems fine.

Air at the vents is cold. I was replacing injector heat shields last night so sorry for the delay in responding. I still need to put an actual gauge on it to get temps. I'll do that here today and report back.

I'm leaning towards add a few more grams of r134a if the vent readings are very low, like in the 50*'s. Given that 24-26bar high side (90% humidity) in the mercedes AC diagnostic guide. That's something like 346psi when I checked the conversion. That still just seems like a REALLY high pressure.

This was an original R12 system that was converted many years back. I don't see the adaptors on the hoses so I think it was a complete hose replace as well. I read about that the 92's were designed for either or "something" like that. I could be wrong so will recheck the hoses to see if it was the conversion kit or an even bigger swap over... but it is indeed R134a.

It just keeps raining here in SC so that's really screwing with the testing of the AC system.

Right now after all my injector work I've got the lovely car not shutting off and a bit of nailing that I'm debugging. Going to due the fuel delivery pump o-rings and washers next... before really getting crazy on that side of the project (engine/fuel/air-intake)

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JH
87' 560SL