Is Mastercraft compressor motor AC or DC??
I have a small 2 gallon Mastercraft compressor (058-7936-6) (1/3 Hp) that I use for small roofing jobs (air nailer).
The motor started to vary in speed when cycling and the brushes seemed to be sparking a bit more that usual. I sprayed WD 40 into the bearing/bushing area and the motor improved for a few minutes and then stopped completely. I took it apart and wired the motor directly to a 120 volt AC supply. The motor tries to turn but just stutters back and forth without completing a revolution. My question to you is that I am now wondering if the motor is a DC motor even though the compressor is plugged into a 120 volt AC outlet. Is there a converter on the circuit board??