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A/C low side fill port


Guest HunterStephens1

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Guest HunterStephens1

ok so im converting the system in my 89 to r-134a and i bought the retrofit fittings but the original r-12 low side fitting is smaller than the low side retrofit adapter and smaller than the fitting on my r-12 manifold gauge set.... i know i have the right retrofit adapters because the low side wont fit on the high side.. what am i missing

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I not exactly sure what your asking.  You need a manifold for R-134a, it has Acme fittings and they are a different size than the R-12 manifold.  As far as the retrofit kits go, you have to get the correct one for the car you have, there is a kit available with all the adapter fittings included. Remember to pull a good vacuum to see the condition of the system.   Here's a web site with good information, they will also answer questions by phone.    www.idqusa.com  

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