No lube oil appearing in the sight glass...

Question 1 / 270705eccefa1bacbc34ba4d47264

Question 1 of 270705eccefa1bacbc34ba4d47264

No lube oil appearing in the sight glass (bull's eye) of a gravity type system is a positive indication of __________.

Question 1 of 27070

No lube oil appearing in the sight glass (bull's eye) of a gravity type system is a positive indication of __________.

🔍 Key Concepts

• Gravity lube oil system operation – how oil flows from the gravity tank to bearings and back • Purpose of the sight glass (bull’s eye) – what it actually shows in a gravity system • Difference between no flow, closed valves, and empty tanks indications

💭 Think About

• Ask yourself: In a gravity lube oil system, what does the sight glass normally indicate when the system is operating correctly? • If the sight glass shows nothing, does that tell you for sure what is happening in the tank, or only what is (or isn’t) happening at that specific point in the line? • Which option describes a condition that the sight glass can positively confirm, rather than something that would still require further checks somewhere else in the system?

✅ Before You Answer

• Identify what the bull’s eye is physically connected to – line, tank, or bearings. • Decide which choices would require additional verification elsewhere (tank level, valve positions) before you could be certain. • Focus on the answer that reflects what you can say with positive certainty just from observing the sight glass, without making assumptions.

Question 1 of 27070

No lube oil appearing in the sight glass (bull's eye) of a gravity type system is a positive indication of __________.

no oil flowing to the bearings

no oil overflowing in the gravity tank

oil drop line is closed

the gravity tanks being empty

Question 1 / 270705eccefa1bacbc34ba4d47264

Question 1 of 270705eccefa1bacbc34ba4d47264

No lube oil appearing in the sight glass (bull's eye) of a gravity type system is a positive indication of __________.

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Question 1 of 27070

No lube oil appearing in the sight glass (bull's eye) of a gravity type system is a positive indication of __________.