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I might try it with a type one MB AC...
but suspect you have the type Three...
that dash panel control system and all the hoses would be a nightmare in my opinion..
the MB AC FSM diagnostic JUST FOR THAT push button panel is something like 80 ( Eighty ) pages long.....
It might be more practical to install one of the under dash aftermarket types... at the passenger side foot area... ... then basically all you need is the compressor , condensor, Rec/Dryer under the hood... the unit has the Txvalve and fan and evaporator all in one hang on unit...
I would sure put the biggest condensor and a hi perf aux fan in front of it... and use R12 IF you are able there... if not, R134a if available...
but make sure you get the R4 Delco made to run on the higher pressures of R134a if you do that... Millions of them are out there working just fine with R134a.... it is just when the old ones made for R12 are switched to R134a that they tend to go bad too soon.
If you could get it working in the parts car then switch that might be a more secure situation.. sure would not want to change over then have to change any major components again...
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