@conrail5065 posted:@Norm Charbonneau just did a nice three part series on an early 2000's 3rd rail Santa Fe 2-10-4, that he has gone through. It was a quiet drive system, and his had a squeak, which he thought was the bearing on the motor mount and it turned out to be the belt. see PArt 2 of his series below where he discusses this.
I did watch Norms video and that helped me figure out the sound issue. So happy he posted these! I have yet to take a look at the belt more closely, but I will be putting a video up after work today. If that’s the issue it’s a simple fix.