🔍 Key Concepts

• Purpose of oil sampling in machinery like winch gear boxes • Common problems that develop in lubricating oil over time (e.g., water, metal particles, dirt) • Difference between oil condition and mechanical conditions like leaks or bearing lubrication

💭 Think About

• Ask yourself: What specific information does an oil sample actually tell you about the system? • Which of the choices describes something you could realistically detect by analyzing the oil itself, not by just looking at the gearbox? • Consider what normally fails first in gear boxes and why engineers care about routine oil analysis programs.

✅ Before You Answer

• Which choice refers directly to oil quality/condition rather than to a separate mechanical issue? • Which options describe things that would not be reliably identified by simply taking an oil sample? • Confirm which problem is commonly monitored in preventive maintenance programs using oil analysis.