So, last time I stopped at the fact that the outlet hose fitting did not screw onto the compressor flange, and the inlet hose fitting did not reach the compressor flange at all.
I started with the simplest - I unscrewed the inlet flange from my compressor and from another, broken compressor. The difference is obvious.
Let me remind you that my "new" compressor was removed from a BMW E34 with an M20B25 engine. And the broken "old" compressor was removed from a BMW E30 with an M20B25 engine. The difference is in the shape of the inlet flange - for the E34 it is straight, and for the E30 it has a slope and an additional valve. Of course, I noticed this immediately, but I thought that the hose could be turned and screwed. But it turned out that its length was not enough for this. Therefore, I will simply replace this flange. I noticed rust residues on the inner mesh, so I cleaned the flange again with a solution of citric acid, rinsed it thoroughly, blew it with air and re-coated it with a cold blueing agent. Now the flange and its inner mesh are perfectly clean.
Complete with a gasket, valve and valve, - ready for installation.
It was more difficult with the outlet hose fitting. Either something got under the thread, or something went wrong, or I'm clumsy... )) But the fitting didn't want to screw onto the compressor flange at all, and the first thread turn was even slightly damaged...
I already thought that I had ruined either the hose or the compressor. But thanks to my brother, I managed to fix everything - he understands these threads and flanges much better than I do. The thread on the compressor flange was "driven" with a similar nut from the fitting of an old air compressor. And to "drive out" the thread on the hose fitting, we had to take a broken compressor as a "donor" - we cut off that flange from it and carefully repaired the thread on the fitting with it.
Here is such a "repair special tool" )
And after that, finally, the outlet hose fitting was in place. Accordingly, the necessary inlet hose flange was installed.
Now the inlet hose is normally in place. Very carefully screw the inlet hose flange to the fitting.
And this is a victory! )) Both hoses are screwed to the compressor.
It seems a bit strange and illogical to me that the inlet hose has thermal insulation, and the outlet hose runs even closer to the exhaust manifold, and does not have thermal insulation.
I checked the photo from ETK - that's how it should be. I even had the idea to install it there additionally.... Does this make sense?
Finally, the air conditioner kit is completely installed!
Now all that remains is to fill it and hope that it will be airtight and will cool well! )
P.S.
By the way, yesterday I drove around my village a little - it's very hot in the car at +36! )
I just stopped by an elderly air conditioner repairman - it's clear that the man has been working in this field for a long time and has the appropriate knowledge, and not just a "refueler" ;) He advised me to contact his colleague, who will easily fill the air conditioner with R12 freon. In addition, he is also nearby, almost near my house. We made a preliminary agreement with him, so I will go and try to fill the air conditioner soon.