Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k
I have a 33 gallon craftsman air compressor 6hp model number 919.167342. It builds pressure up to around 140psi in the tank then shut off and would not cycle back on. Motor spins freely (it is an oil free motor) but there is a oily substance leaking from the rear cover, followed with an akward smell. I pulled the cover off and nothing appears melted but there is smoke coming from inside the cover. Compressor still spins but just hums when you put power to it.
Your compressor is most likely made by Campbell Hausfeld. The oily substance could be leaking from the capacitor on the motor. Remove the cover and examine the capacitor for failure. There is a value printed on the cap. (uf) The cap must measure to within 95% of printed value. A failing capacitor will cause the hum that you are experiencing.
Posted on Dec 27, 2008
CAPACITOR SOUNDS LIKE THE OIL PROBLEM. BUT THAT COULD HAVE GONE BAD BECAUSE: IS THE COMPRESSOR "UNLOADING". HISSING AIR OUT WHEN SHUTTING OFF SO IT DOESNT TRY TO START BACK UP UNDER A LOAD. IS YOUR COMP. WIRED FOR 115V OR 230 VOLT (LOW VOLTAGE OR HIGH VOLTAGE) AND DOES YOUR POWER MATCH IT. ARE YOU RUNNING WITH TOO SMALL GAUGE WIRING OR DROPCORD. USE #12 OR #10 CORD. IF YOUR COMP. IS TOO SMALL FOR THE JOB THEN IT RUNS TOO MUCH AND THE MOTOR GETS HOT. THE CAPACITOR IS USUALLY ON TOP OF THE HOT MOTOR.
Posted on Dec 27, 2008
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Posted on Jan 02, 2017
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