A/C Low Pressure Switch - does it have an o-ring? - Jeep Wrangler Forum
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Old 06-22-2011, 09:11 PM   #1
lbc
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Join Date: Jun 2011
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Question A/C Low Pressure Switch - does it have an o-ring?

The A/C refrigerant on my 1994 Wrangler Sahara (4.0L) leaked out of a rusty condenser. I replaced the condenser, accumulator/drier, and all the system's o-rings. But when it comes time to thread the low pressure switch back onto the drier, I noticed it has no seal. Is it supposed to? Did I lose it?

Under the pressure switch is a handy schrader valve which lets you change the switch without venting the system. Both are metal thread interfaces; I have a hard time believing a metal to metal seal would be sufficient. Can anyone verify if there should be an o-ring here? If so it must be custom, none in my generic kit are small enough!

Attached is a pic of the inside of the switch. The rod opens the schrader valve.

Thank you very much!

Mark
1994 Wrangler Sahara 4.0L
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