Converting factory AC to use R134a

[ricachon7]

Thank you!!

Here's what I drew up. This is my understanding of the wiring and the routing of hoses. Does this appear correct?

AC COMPONENTS.pdf

[dmjlambert]

Looks pretty good to me. Here's the factory setup from the 1970 service manual.

[YellowK5]

For most later Generation AC system the hi low switch is a hi pressure cut out and low pressure cut out for the compressor..Hi pressure will/can blow up the system or burst a hose(no POV valve) and low if you loose the Freon so the compressor wont burn up..

[ricachon7]

Thank you, dmjlambert!!

I believe I understand now but I just want to make sure I do.

Can I have the factory air set up just as shown on the diagram but instead of using the original type of compressor use a Sanden type and it works just the same?

Do I not need to add a binary switch?

Do I understand correctly that I do not need to be concerned about the compressor cycling if I keep the POA valve?

[dmjlambert]

That's my understanding but I don't have much experience. If you don't hear others chime in you may want to make a separate new thread.