rdavidp wrote:I was hoping someone would pick up on the noise, and it wasn't just me being paranoid. That video is of the second time I flipped the light switch to turn the motor on. The first time I turned the motor on, for about the same amount of time, the motor sounded ok. I then turned on again a couple of minutes later, and that is the video I posted. Monday I will try to see what is making the noise. As for the fan sheeve JPG mentioned, I took off the fly wheel that slides along the sheeve when I first started cleaning the shopsmith, so the only wheel on the motor is the one that seems to be somewhat permanently attached, or atleast attached enough for me to not to try to remove it.
The motor shaft has a fan sheave and a floating sheave that make up the motor pulley. A second look at the video indicates the fan sheave is still attached. The floating sheave is what slides along the shaft. A key aligns the the sheaves. There is a setscrew that secures both the fan sheave sand the key on the shaft. You already know about the spring etc.
I am trying to remember which motor version has tapped holes in the fan end and which has nuts. If yours has nuts, one may be rubbing against the fan sheave.
The nuts(or tapped holes) may be seen by looking into the fan outlet. The nuts are supposed to be in hex shaped depressions so they are not proud of the motor end cap. Only thing proud of the cap is a spacer that is on the motor shaft that locates the fan sheave away from the cap.
If the end cap is not aligned properly with the motor outer shell or 'cocked', the fan blades may be hitting the fan 'shroud'.
FWIW, I place the shaft end cap on first(with or without the armature), and attach the other end cap last. The end caps need to be seated onto the outer motor shell prior to inserting screws.