USCG Exam PracticeBearings, lubrication, and care of machine parts
A tailshaft fitted with oil-lubricated bearings may be exempt from being drawn for examination provided several conditions are met. Which of the following is one of those required conditions?
- A. The tailshaft must be fabricated of material resistant to corrosion by seawater
- ✓ An analysis of the tailshaft bearing lubricant must be performed semiannuallyCorrect
- C. The vessel must be fitted with multiple shafts
- D. The tailshaft must be fitted with a flanged propeller
Why B is correct
46 CFR §61.20-17(e)(3) specifies that a tailshaft with oil-lubricated bearings need not be drawn for examination if, among other conditions, an analysis of the tailshaft bearing lubricant is performed semiannually in accordance with the lubrication system manufacturer's recommendations to determine bearing material content or the presence of other contaminants.
Cited:46 CFR §61.20-17(e)(3)