RS1 ground fault

[videoman]

We have an RS1 which needs a lot of TLC...having recently acquired new batteries, we're trying to get 'er running. One major problem is that at any speed faster than a walk, we get a ground fault and everything comes to a halt. Realizing that there are numerous places that this could be occuring, none of us (volunteer and amateur) fixer-uppers have the information to help up start to unravel the problem. Anyone with experience in these old Alcos shed some light on the troubleshooting procedure? Any help appreciated!

W.B. Vaughan
Volunteer machinist
Gold Coast Railroad Museum
Miami, FL

[DutchRailnut]

a ground fault is in the high voltage system, the Generator or one of the 4 traction motors, if not try reverser or power contactors.
my guess a carbon brush pigtail hanging loose in one of traction motors, specially since it happens at very low speeds.

[videoman]

Hey, DutchRailNut, thanks, that's a great help!
W.B. Vaughan /Gold Coast Railroad Museum, Miami FL