An excavator rarely wakes up one morning and decides to completely destroy itself. More often, it gives you warnings. A strange noise. A little smoke. A hydraulic function that suddenly feels slower. A track that doesn't seem to have the power it used to have. A boom that creeps down when it shouldn't. A machine that starts running hotter than normal. The problem is that we often ignore these warnings. We tell ourselves: “It's an old machine.” Or: “It was just doing something