The 1947 - Present Chevrolet & GMC Truck Message Board Network - 1972 Suburban AC unit refrigerant capacity

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1972 Suburban AC unit refrigerant capacity

My 72 Suburban has factory front and rear ac which I'm planning on converting from R12 to 134a. Does anyone have any info on how much refrigerant and oil the system requires in order for me to figure out 80% of the R12 value ... Any help would be greatly appreciated

Re: 1972 Suburban AC unit refrigerant capacity

Quote:

Originally Posted by KFF 1 (Post 8727655)

Not sure if you have the original compressor, there's a label on it stating the system lbs of R12. Which I think is at least 4lbs to 4.25lbs with rear air. Not a 100% on this going from memory. Classic Auto Air probably has the conversion table from R12 to 134A