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Butch1957
06-22-2006, 06:06 PM
I just replaced the piston assembly & check valve on a craftsman 2hp 135PSI horizontal air compressor. The unit runs fine but never shuts off while holding on to 120PSI on the guage ( dial meter ).

Any suggestions as in reference to what else I can do besides buying another compressor ?

Please Respond.

Thanks.

fly-4-fun
06-22-2006, 06:16 PM
Could the pressure switch be sticking or gotten bumped while you were working on the compressor ?

FIXDISS
06-22-2006, 07:26 PM
I just replaced the piston assembly & check valve on a craftsman 2hp 135PSI horizontal air compressor. The unit runs fine but never shuts off while holding on to 120PSI on the guage ( dial meter ).

Any suggestions as in reference to what else I can do besides buying another compressor ?

Please Respond.

Thanks.
If it is set to shut off at 135 psi and it is not reaching over 120 then it seems the pressure switch is working. You may have a leaking fitting causing compressor not to reach the 135 psi required to shut it down or you have a problem with the valves in the compressor.