What exactly is Hooklift Jumping? It's also known as, jumping, bar slipping, hook jumping and a few other choice words like "!*@" and "WTF was that" and "f*ing hell no" just to name a few. I'm going to demonstrate and show you what this actually is, what causes it to happen, what it looks like and of course how to fix it if it happens to you. If you run any size hooklift truck, there's a very good chance you've experienced this at some point. More times than not, when your hook starts jumping the bar, it's a dumpster issue...and not a truck issue. I've brought @samedaytrashin aka, Sean along to help demonstrate how it's done!