The snow has finally left and I am back to working on my D4 Trackcavator. My question is this. Only one of my dump cylinders for my bucket work. How do I tell which one does? My theory is that the one that is working extends and retracts first. Would this be a correct assumption. Any help would be appreciated, as I do not want to tear apart the wrong one, and they are heavy and hard to handle by hand.