Removing wheels from a Toughsystem Case

I need to remove the wheel assembly from the Toughsystem case, as well as the handle.   Was able to remove the pins that attached the top of the handle to the case but don't know how to remove the wheel assembly and the rod that connects the wheel assembly to the case - without rendering the wheel assembly unusable at a later date when I want to assemble it back.  

I welcome any suggestions.  Thank you