I use one of these: https://www.amazon.com/Mastercool-81490-R134A-Remover-Installer/dp/B000KITSMI

I believe I got it from Tooltopia.

Do you still have R12 or has it been converted to R134? I believe it makes a difference in regards to the tool needed.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
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