Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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No power I have a 3 HP craftsman air compressor . The motor is not sufficiently strong enough to turn compressor. I have checked the wiring with a megameter and checked to ground. Everything seems normal. I have replaced the start capacitor and checked the run capacitor which tests out ok. When I run the motor I can hold the pully and keep it from turning, I checked the wireing diaghram and it appears that the correct wires are at the correct terminals. Can anyone give me some possible solution (besides tossing the motor).

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  • boss dad May 11, 2010

    did you just get this compressor --- make sure the motor is setup for either 110 or 220 depending what your plugged into. sounds like a 220 motor setup to a 110 supply.Otherwise, you will have to toss the motor ( i hope the pulley isnt loose at the motor shaft )



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I think you have a bad phase or you are not getting the correct volts going in try switching the hot wires red to black and black to red and check each set of windings for continuity

Posted on Jun 23, 2009

  • alex MACHELL Jun 26, 2009

    how is my advise working out are we solving the problem yet get back to me and let me know i can get the schematic if we need to what brand of motor and i will need the model # and serial # plus the specs from the plate or sticker on the side of motor



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