What compressor is this?

[//My5UV]

Both the D and unlabeled port are 7/16 so I’m guessing it’s R12 and it doesn’t look like a York or a Sanden since it has a German info plate.

 

[Bmachine]

Better photo?
Which car?
Which year?
Early Bosch rotary?

 

[boonies]

good questions. What we can see of the fittings appear to be flared so my guess would be R-12. More information would be helpful.

 

[//My5UV]

1974 e9
I’ll try to clean it off and get a better picture, but my next task is to see if there’s any pressure in the system.

 

[Bmachine]

1974 e9

More than likely early Bosch rotary.

 

[HB Chris]

The 74 e9 got the axial compressor so it isn’t a rotary, these were also used in Porsche 928s and parts are not available.

 

[//My5UV]

Hmm, that makes sense. thanks! Hopefully it "just works still" and I can fix the leak(s) and get back in business.
MY UV penlight shows a couple hose connections that are pretty bright so I'll probably get a nitrogen bottle and try a basic pressure test...

 

[Bmachine]

The 74 e9 got the axial compressor so it isn’t a rotary,

Oops. Right you are, as usual, Chris

 

[stphers]

If you have the copper cupped washers / seals in there and they are leaking, you can take them out and heat them up to reuse them almost like new Having a brain fart and can't remember the proper name for doing this I think that I might have a few of those still kicking around some where Ha ! annealing is what it is called

Thanks, Rick

 

[Fritzie]

Here is a Bosch example

 

[Larry Louton]

Hello, The term for reheating a copper washer is Annealing.

Thank you.
Larry Louton

 

[//My5UV]

Yes! the suction port configuration is slightly different but seeing a label I can read is super helpful!
Unfortunately I'm out of town for the next couple weekends but hopefully by August I can put gauges on it to see what the condition is, check for leaks, and go from there...