You could be heavily fined if a neighbor saw you do that and turned you in.
A/C Under Pressure?
Thread Starter
Melting Slicks
Joined: Dec 2007
Posts: 2,619
Likes: 2
From: Perkasie Pa
A/C Under Pressure?
I'm going to be removing my a/c compressor and hoses, system has not worked in 20 years. When I remove the hoses is r12 going to come flying out? I was reading that these systems are under alot of pressure. Thanks
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
If there is freon in the system, yes it is going to come out. BECAREFUL, freon is very cold and oil is going to come out also. If you have to do this, there are fittings in the lines a high and low. I would push down on the fitting (Looks like the filler for air on your tire) and see if there is any pressure there. You can release the pressure that way or you can release it by loosing the bolt on the back of the compressor. If you do this method remove the bolt very very slowly. Once you here the hissing just leave it alone until it stops.
EPA will hate you.
The bolt is were you see the large freon line going to the back of the compressor
EPA will hate you.
The bolt is were you see the large freon line going to the back of the compressor
Last edited by spedaleden; Feb 9, 2008 at 11:16 PM.
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Please dont discharge the R12 out in open air! .. it will just widen the ozone empty spot more and more! .. By law, only certified discharge station would be allowed to do that.
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
Drifting
Joined: Jan 2004
Posts: 1,991
Likes: 3
From: Piscataway NJ
Thread Starter
Melting Slicks
Joined: Dec 2007
Posts: 2,619
Likes: 2
From: Perkasie Pa
Racer
Joined: Feb 2008
Posts: 497
Likes: 0
From: Streator Illinois
A/C pressure test
It is very easy to determine if your system still has pressure. Just take the cap off one of the schrader valves (looks like a valve stem) and give a quick push down on the center. You can use either the high pressure side (line goes to the condenser by the radiator) or the low pressure side (line goes to the evaporator by the heater core) if you have a fitting on each.
Keep your face and bare skin away just in case but I would also seriously doubt that you will have any pressure after all this time.
Terry
Keep your face and bare skin away just in case but I would also seriously doubt that you will have any pressure after all this time.
Terry
Melting Slicks
Joined: Apr 2002
Posts: 3,268
Likes: 2
From: Minnesota in the summer, Las Vegas in the winter
The valves are called Schrader valves. Get a set of gauges ( maybe the local auto parts store will loan you a set ) or have an HVAC guy stop out and just put his gauges on your line. He can then tell you if there is anything in there. If you are in good with a mechanic maybe he could stop out on his way home.
I agree: It is not cool to discharge R-12 into the air. Its the same as dumping oil down your drain.
I agree: It is not cool to discharge R-12 into the air. Its the same as dumping oil down your drain.
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Advanced
Joined: Jul 2007
Posts: 85
Likes: 0
From: east TN
You might save everything. At some point you or the next owner may want air conditioning.
Thread Starter
Melting Slicks
Joined: Dec 2007
Posts: 2,619
Likes: 2
From: Perkasie Pa
Thanks, I save everything that comes off the car, for the next owner.