[wingnut60]

That is exactly how it works--ram pushes on rear slide arm moving it out/in. Long square 2-piece tube over to the other side. In actual working, both slide are followers, the ram just pushes/pulls the rear arm and the front arm follows by the tube.
Hopefully, it keeps going til you can get to fixing it. Mine would not climb up the ramp coming in without a lot of help, but it would go out ok.
Let me know if I can help any when you start on it.