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-   -   91 Cherokee R12-R134 Conversion A/C port size (https://www.cherokeeforum.com/f59/91-cherokee-r12-r134-conversion-c-port-size-245836/)

Ottothom1123 07-20-2018 07:23 PM
91 Cherokee R12-R134 Conversion A/C port size
 
Hi.

I am attempting to retrofit a 91 jeep cherokee from r12 to r134. I have tried using generic retrofit kits from autozone and oreillys but both do not fit the low service port. (the high end fits but low end is smaller) This is common in pre 94 GM and Chrysler vehicles.

What I need to know is what size the low end service port should be to retrofit. I believe the high end is 7/16 and I am thinking the low end is 3/8 but am not sure and want to figure it out before I start buying more parts.

Please help.

Andre

ajpulley 07-23-2018 05:44 AM
Originally Posted by Ottothom1123 (Post 3504187)
Hi.

I am attempting to retrofit a 91 jeep cherokee from r12 to r134. I have tried using generic retrofit kits from autozone and oreillys but both do not fit the low service port. (the high end fits but low end is smaller) This is common in pre 94 GM and Chrysler vehicles.

What I need to know is what size the low end service port should be to retrofit. I believe the high end is 7/16 and I am thinking the low end is 3/8 but am not sure and want to figure it out before I start buying more parts.

Please help.

Andre
Four Seasons make replacement service valves for the Sanden compressor with R-134a ports on them. Amazon.com happens to carry them. Rather than use retrofit adapters, I opted to replace the entire valves.



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