🔍 Key Concepts

• lubrication system behavior around bearings • how temperature changes when a bearing begins to overheat • difference between direct symptoms of overheating and indirect system conditions

💭 Think About

• Which choice shows a change happening right at the bearing as it overheats, rather than somewhere else in the system? • If a bearing is overheating, what happens first: a change in oil cleanliness, oil level, bubble formation, or oil temperature at the point where it leaves the bearing? • Which option would an engineer most rely on as a primary indication that the bearing itself is running too hot?

✅ Before You Answer

• Identify which options are indirect effects (may happen for many reasons) versus a direct sign of bearing temperature. • Ask: which indicator would be connected to a temperature sensor or thermometer near the bearing outlet? • Eliminate any choices that could occur even when bearing temperature is normal.