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My Craftsman 25 yr old air compressor #106175541 will not turn off below 80psi, need to use it at 40psi to paint model boats. This is in great condition,

plus there are some available. I suspect the diaphragm assembly, part #73 in diagram to be the culprit. Please advise, I want to use this Craftsman for another 25 years!

Air Compressors , Craftsman , Kenmore PRO Appliances , Tools
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Mark T
You are correct the diaphragm is most likely the problem. If the diaphragm has a hole in it, the air will leak past not allowing you to adjust the pressure. I have checked on key number 73 and I am sorry it is no longer available. It is not time to throw the air compressor out yet. I recommend adding an after market regulator after the original regulator. This will solve the problem and work fine. If you would like to view the regulators, we sell please click on the following link.


I hope this is helpful. If you need further assistance, please submit more details below.

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by Mark T Earned 1,649 community points in Craftsman
September 9th, 2010
Answered in 4 hours
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