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V7 Compressor Allen Adjustment????

Don RRSU on Sat July 17, 2010 5:48 PM User is offlineView users profile

Year: 2003
Make: Chevy
Model: S-10 Pickup
Engine Size: 2.2 L
Refrigerant Type: 134a
Country of Origin: Vanuatu


Could anyone please tell me the function of the adjustable Allen set screw on the ports end of the V7 compressor on my 2003 Chevy s-10 Pickup with a 2.2 L 4 cylinder engine?

Thanks,

Don RRSU

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Don RRSU

GM Tech on Sat July 17, 2010 8:03 PM User is offline

Photo please-- never heard of it-- unless it is hang-on air-- certainaly not factory.....

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

Don RRSU on Sun July 18, 2010 9:35 AM User is offlineView users profile

GM Tech,
Thanks for the interest. The link to the picture is below. In the picture I've placed a red circle around the allen set screw item.


Don RRSU

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Don RRSU

chris142 on Sun July 18, 2010 11:06 AM User is offline

Thats the high pressure reliefe valve. It is designed to vent refrigerant if the head pressures are crazy high. No adjustment for it.

TRB on Sun July 18, 2010 11:17 AM User is offlineView users profile

Agreed it is a relief valve.

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