How to open up the track on a cat 235?

I have this old Cat 235 excavator. I'm trying to figure out how to open up the track without buying the $6k Cat tool.
I made my own hydraulic tool for removing the pins of the hydraulic rams. I suppose I could make my own tool for doing the pins but I was hoping there would be a better way..?

Видео How to open up the track on a cat 235? канала castirondude