The 3hp single phase AC motor on my lathe has developed an issue that I am having trouble finding a match for online. When I start the lathe, the motor will turn, but it buzzes or vibrates significantly and if left on for more than a few seconds, it trips the breaker. The odd thing is that it doesn't do this every time. If I pulse the start button, I can get it to run normally. I pulled the belts off to confirm it is the motor and not gear train related. When the motor runs normally, it is smooth and quiet. I pulled the starting caps and plan on replacing them, but both were holding a charge and there is no obvious deformation of the body or and leakage.
Any thoughts?
Thanks,
Tim
Any thoughts?
Thanks,
Tim