Need Help with 2240 Wabash F-3

I do not have my manual in front of me but believe these locomotives used a grounding   spring where the motor mounts to the frame and possibly that is missing.

If that's the "U" shaped spring it's there. Maybe I put in on upside down? Would that make a difference? What way should it be under the motor? Thanks Don

May be a ground problem.  Did it appear the new frame was repainted?  If so you must ensure all 'ground' areas are clear of paint: e unit mount; non-powered truck mount (pivot point), should be a small coil spring there; as you mentioned, the springy horseshoe shim for the powered truck/motor.

Sounds to me like a e-unit problem. It's not locked out?? Nah! Does the e-unit cycle seem OK?

If I give power to the E-unit it works but it gets no power when I touch the rollers and frame. Don

Run a separate wire from the grounded field lug to a screw tapped to the frame. I've had lots of F3's that perked up with this fix. The wavy washer is supposed to ground the motor to the frame, but sometimes doesn't.