Shear and moment diagrams with bevel gears

[pyroknife]

I have attached the problem. I am a bit confused on how this schematic works.

The 3 forces on the bevel gear should translate to 3 moments where the bevel gear connects to the shaft. Will there also be any forces where it connects to the shaft?

 

[pongo38]

Choose an origin, say where bevel gear meets shaft. Identify x y and z axes. If necessary sketch 3 orthogonal views of the situation, or, better, a perspective sketch. Then, where the bevel gear meets the shaft, identify the Mx, My, Mz, Fx, Fy, Fz components of the actions. The rest should follow if you can do that.