wing window question/

[70Custom10Nut]

Is it possible to take the wing window frame apart from the piece that has the window channel on it? I hope I'm asking this right. What I need to do is replace the part that has the pivot and spring (mine broke loose). The rest of my window is in great shape with no rust or pits in the chrome, so I'd like to just replace the broken part. Also, I have access to the parts here locally but the rubber on my present upright section is in better shape than any of the one I can get from the yard, so I'd like to use mine if possible. Any insight would be greatly appreciated. Cnut