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Old 09-05-2022, 11:06 AM   #1
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Location: Dallas,TX
Default 940 r134a ac valve core tool

I have a leaking ac fill valve(right next to drier). I have replacement core but a standard core tool does not work. The core is much deeper in the valve. Any sources for core tool or a method to removing core?
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Old 09-05-2022, 11:59 PM   #2
James M
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Join Date: May 2017
Location: Davis, CA

Valve core like the shrader valve? Any auto parts store should sell one, same you would use on a tire.

Yes maybe I've broken this tool 4 times but they warranty it no questions asked.
The only time it doesn't work is GM ball valve style
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Old 09-06-2022, 01:35 PM   #3
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I couldn't tighten my core until I realized I needed to take off the quick connect fitting in order to access the shredder valve. That was a brain fart that lasted several weeks.
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Old 09-06-2022, 04:36 PM   #4
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Location: Oakland, CA

There's also tools like this that let you change the valve core without discharging the system
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