85 corvette - AC system o-ring size
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85 corvette - AC system o-ring size
85 corvette - there is a low pressure cycling switch coming off the evaporator. the factory parts manual calls out a .301 x .070 (5/16" x 1/16" (7.65 x 1.78)) o-ring. I replaced with this callout, and it leaks like a sieve. I have one of those mastercool o-ring sets, and there is not a size that matches the original o-ring. I did use a 8.8 x 1.9 (.3465 x .075) - it's the closest, but not a perfect match. pulling a vacuum as we speak - not sure if it will hold the vacuum. anyone know the correct size? TIA....
update: pulled a vacuum for about 30 minutes (28"), and it SEEMS to be holding? follow up questions - how long should I pull a vacuum, and how long should it hold before I can say it's leak free?
update: pulled a vacuum for about 30 minutes (28"), and it SEEMS to be holding? follow up questions - how long should I pull a vacuum, and how long should it hold before I can say it's leak free?
Last edited by Joe C; Jun 26, 2016 at 01:55 PM.
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I'm thinking the switch number is 10007057 - could be wrong though. there is nothing in this 270 piece o-ring kit that's close to .351
x .072. my .3465 x .075 seems to be working and holding vacuum.
thanks for the reply -
BTW, you're not in any of that WV flood area, are you? hope you're high and dry....
Last edited by Joe C; Jun 27, 2016 at 12:10 AM.
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I'm thinking the switch number is 10007057 - could be wrong though. there is nothing in this 270 piece o-ring kit that's close to .351
x .072. my .3465 x .075 seems to be working and holding vacuum.
thanks for the reply - BTW, you're not in any of that WV flood area, are you? hope you're high and dry....
x .072. my .3465 x .075 seems to be working and holding vacuum.
thanks for the reply -
BTW, you're not in any of that WV flood area, are you? hope you're high and dry....Search eBay for this evap (3057733 GM) and the switch (3041596 GM) there's a very good snapshot by JnJ and several of the switch. The mounting port for the switch is shown well in the JnJ image.
