I am doing the conversion from R-12 to R-134a on my car using a kit from Kragen. Where exactly is the High Side service port and where exactly is the Low Side Service Port? Is the low side on the accumulator? Is the high side on that line in front of the accumulator or is it the little port right behind the compressor? I need to know the exact locations of the service ports to put the fittings on. Also any tips on doing the conversion will be appreciated.

 

Low side is on the evaporator drier. High side is the other fitting with a schrader valve (valve stem) only two on the system hard to miss. You also might wanna chamge the o-rings to R-134 blue & green. I know some kits come with them but thier incomplete. Its an extra $5, well worth it. Also get a can of silicone spray to lube the o-rings.


Good luck!

 

There were three ports I saw on the system though. One was right behind the compressor, the second one was on the AC line going towards the accumulator, and the last one was on the accumulator itself which I believe is the low side port. Which one is the high side port? Sorry I don't really know what the parts of the AC are called, all I know is the acumlulator and compressor. If you can give a brief description on exactly where the ports are that would be great. Thanks for the advice on the O rings, will do.

 

 

O cool Vader thanks. Ok now I know for sure where the low pressure service port now where exactly is the high pressure service port?