I am trying to understand how calculate the forces in the beams or atleast how they relate to eachother. There is a pin at the top right its just hidden as it is a wheel behind the rail. I am confused at the pin where the cylinder connects on how the load would be transfered to the lower parts of the beam. I originally thought (as shown in the picture) that the piston wouldn't make a difference in transfering the load along the beam but now I think it would. I am also trying to calculate the bearing stress in the pins and am not sure if I only include the piston load or the load from the beams as well. Also at pin C I feel like there would be little load because the piston would take most of it, is this correct?