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So I got the hoses replaced, oil filled, system charged...and the ac was cold for a couple days . Then it wasn't cold any more
The technician said the compressor appeared to be leaking oil, as there appeared to be compressor oil on the bolt heads. He suggested I look to replace the compressor.
Most of the ac installs I see have crimped and hydraulic style fittings. This compressor had a different fitting, and the hoses are secured with hose clamps. They don't seem to leak, and the system does hold vacuum for a while, but something is definitely leaking.
So here's the compressor...
A fair bit of searching hasn't revealed another compressor in this style. Do I rebuild it, replace it, or go with a Sanden and some new fittings?
That clamps are normal for dealers installed AC as it was posted over on the 80-86 area.
I would need to look ay my 81 York to see what fittings it has but you might have to unbolt your fittings and bolt them onto the new compressor.
You say"holds vacuum for a while"? What is a while time wise? It should hold a vacuum for 24 hrs before charging the system.
Dave ----
Thanks on the confirmation regarding the hose clamps. Ya never know what a PO may have hacked-up, so good to know that's to be expected with dealer air installed way back then.
I wouldn't mind transferring the fittings over to a replacement compressor if it came to that. My issue is finding that style compressor. My trucks with factory air have threaded male fittings for the hose connections.
The "for a while" was about a half-hour while I was watching in the shop. I guess I could put a vacuum on the system, but not sure how I'd find a slow leak.
Do you know where I could get this type of compressor if need be?
After some more research, it appears that this is a basic York compressor, 210 series, with flange connectors and is right hand. Further, it seems that a standard 210 rebuild kit would work.
I found a nice PDF step-by-step picture manual. I think I can handle it!
When I get real ambitious, I'll order the stuff...
I've never seen someone ever rebuild a compressor. This style compressor was available new still when I was working at a big truck shop six or so years ago. It doesn't have the massive flywheel looking pulley and is made of aluminum instead of cast iron, but has the option of v-belts or serpentine pulleys.
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. Then it wasn't cold any more 
