Self draining air compressor!

[Uglyhat]

Hey folks,

I have my Dad's older Craftsman air compressor (919-176720) which chugs up to pressure just fine, then when the motor kicks off goes "pffffffff......." immediately until it kicks back on, rinse, repeat. Air is leaking out of the pressure switch. Sears parts direct of course does not have one, but Grainger (and probably many others) do, fairly reasonably. My question is how to pick the right one, I've gotten this far. Does one of these look right to you? I can't see any obvious difference besides price:

https://www.grainger.com/product/SQUARE-D-9013FHG-Pressure-Switches-WP6020060/_/N-1z0dozo?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/3AY90_AS01?$smthumb$#nav=%2Fproduct%2FSQUARE-D-9013FHG-Pressure-Switches-WP6020060%2F_%2FN-rciZ1z0dozoZ1z037vkZ1z038hbZ1z0373fZ1yzj7s2Z1z038h9%3FR%3D1V628%26_%3D1478359582110%26picUrl%3D%252F%252Fstatic.grainger.com%252Frp%252Fs%252Fis%252Fimage%252FGrainger%252F3AY90_AS01%253F%2524smthumb%2524%26s_pp%3Dfalse%26sst%3DsubsetTest

 

[pajibson]

Problems not the pressure switch. Its the check valve on the inlet to the tank. I have had pretty good luck taking them out and cleaning them up.

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[Uglyhat]

Thanks pajibson I'll take a look at that.

 

[WWheeler]

I've had the same symptom on my compressor happen a few times with the pressure relief valve and I've just pulled and pushed the ring a few times and it's went back to operating as normal.

 

[pajibson]

Uglyhat, Did you ever figure this out?

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