Not much to it.
The motor field is connected to the frame.
1 The frame connects to the 4 finger board( on the side of the lever rivet).
2 The 2 finger wire and 2 center fingers on the 4 finger board connect to the motor brushes,
3 The rivet sticking out (opposite the lever rivet) connects to the center roller wire.
To test the lift action connect each rivet to a transformer.