I will start by saying... I have never, ever ever, ever ever ever, seen an a/c hose with a standard hose clamp on it. It is unthinkable. It isn't done. Subaru master designers, you sirs, live in bizzaro world.
Now that my dizziness has passed thanks for the pictures. Follow those hoses that connect to your compressor and you should see somewhere on them service ports. They will possibly have a black cap that screws on to them. Whether they have the cap or not it will be hard to miss. Take pics of those as well. When you unscrew the caps you will see inside a schrader valve, just like the ones on tires you put air into.
Here are pics from my 89 Chevy van that has the old R12 system. The low side port is directly on the large cylinder. That is the dryer. Yours may or may nor be on the dryer but you will know the low side because it will lead off to the firewall. Inside the firewall the hose goes under the dash and into the heater/ac box and into the eavaporator. You can see the box from insode but not the evaporator. To see the evaporator you'd have to probably remove the box and open it up. You don't do that unless you are pretty sure the evaporator is leaking. 90% of leaks are in the schrader valves on a/c systems though. More on that later. You will know the high side because the hose it connects to will run out in the direction of your radiator an connects to a thing that looks like a radiator but smaller. This is the condensor.
For R12 charging the connectors screw on. R134 uses quick connecto adaptors. Connecto is a typo and I meant to say connect. However connecto looks cool to me so I'm leaving it there. HA! Here is a picture of my R134 retro adapters.
Here is a picture of them screwed onto my R12 ports.
There is a bit more to converting from R12 to R134 than just putting these adapters on and charging. Apparently if you mix the two coolants they are not compatable and you can lock up your compressor. So don't do that yet. I am in the process of converting my van over so I can report back on my success or failure later. However both systems work exactly the same and I can help you troubleshoot yor issue. I have hunted down and reaired my wife's Grand cherokee a/c. We had to replace the evaorator, accumulator and hose, drier and an inline filter in the ac system. For about $400 for tools, parts and refidgerant I repaired her ac that the shoptold me they weren't sure what was wrong and were going to charge me over $700 in labor to fix. No parts included in that price and I wouldn't be able to keep the tools.
Tools you will need are: a/c manifold gauges and an a/c vacuum pump. I got mine at harbor freight.
THese gauges and pump only for the R134 though. Don't go out and buy the pump yet because you may be able to get away without it if you don't have to actually replace parts. They do sell a dual R12/ R134 guage.
But you still need the R12 and it is expensive.
Once I convert my van I can report back on that and help guide you through converting to R134 and diagnosing your system. Or you can buy the Dual guages and some R12 an I can help you though diagnosing and charging your system. Or try to find an indy shop that will fix your R12 system without converting. I like fixing things myself because my experience is that shops don't do as good or as thougrough job as I will because I actually care about my car. Yours is a very rare and specific vehicle so I know you care. Again replacement parts for you are going to be rare if not impossible to find. If a shop locks up your compressor or bursts a hose, evaporator or condensor they are going to say, "Sorry, can't get the parts. It can't be fixed." Then take your money and leave you with nothing.
Still I am not 100% sure which refridgerant you have so hunt down those ports and post pics. Think about which route you want to take to get your a/c going and let me know. I wish like crazy I had factor a/c on my brat. My options are probably going to be getting an aftermarket system an they are expensive and most of all don't look factory original.
Edited by maestro, 06 April 2013 - 05:50 PM.