Retrofitting A/c on a 91 4runner

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07-28-2007, 01:47 PM

Fo by Fo

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Retrofitting A/c on a 91 4runner

Hey guys, so I'm retrofitting from r12 to r134 on my 91 4runner 3.0, and I just had a question. Do need I to remove the original service valves or can I screw the new ones onto the old ones? Unfortunatly I lost the directions to the retrofit kit. Thanks.

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07-28-2007, 05:53 PM

Robrt32

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Should screw on the old ones, mine did.. I don't remember if the directions said so or not but i had take the valve core out of the low side port, then screw the 134 service port on..