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R134A Adapters Question

70rustrunner on Fri July 11, 2008 9:26 PM User is offline

Year: 1966
Make: Ford
Model: Mustang
Engine Size: 289
Refrigerant Type: R12
Ambient Temp: 85
Country of Origin: United States

Bought a set of R134A adapters for this car. I notice the low side adapter has a schraider valve it not the high side. Does this sound right? The original connection on the low side does not have a valve. I cannot see the high side to check it. Did the original R12 system have a valve on the high side. It has been a long time since I worked on an R12 system and don't recall the valve set up.

TRB on Fri July 11, 2008 11:29 PM User is offlineView users profile

On this vehicle you most likely have isolation valves on the York compressor. Neither will have a valve core on the valve as they have a plunger to stop flow. One retro fitting with a valve core and one without. Sounds like someone is cleaning house. All our conversion fittings come with a valve cores.

Hope that helps with your question.


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mk378 on Sat July 12, 2008 12:27 AM User is offline

Sounds like you have those aluminum Interdynamics fittings. The steel ones like AMA sells, you can also find them in finer local parts stores, are better. If you do have isolation valves though you don't need to be so concerned about the fittings leaking. With isolation valves you remove the plastic or aluminum cap and twist the valve stem slightly to open up the service port (AFTER connecting the manifold hose).

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