A brutally honest guide to the real causes, hidden failures, and how to stop cooking your machine Let’s start with the most common (and most expensive) lie in the earthmoving game: “It’s just the radiator.” No, it’s usually not. If your excavator is overheating, and you keep flushing the radiator like it’s some kind of miracle cure… you’re treating the symptom, not the disease. And that disease? 👉 Heat. Friction. Neglect. And a few sneaky components no one bothers to check.