USCG Exam PracticeBearings, lubrication, and care of machine parts
Under 46 CFR §61.20-17, a tailshaft with oil-lubricated bearings need NOT be 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 corrosion-resistant material and fitted with a continuous liner.
- ✓ An analysis of the tailshaft bearing lubricant must be performed semiannually to determine bearing material content or the presence of other contaminants.Correct
- C. The vessel must be fitted with multiple shafts so that each shaft is examined once every 5 years.
- D. The propeller must be a flanged type designed in accordance with ABS standards.
Why B is correct
46 CFR §61.20-17(e)(3) specifies that one of the conditions allowing an oil-lubricated tailshaft to remain undrawn is that an analysis of the tailshaft bearing lubricant is performed semiannually per the manufacturer's recommendations to determine bearing material content or the presence of other contaminants. The other options describe separate provisions under §61.20-17 that apply to different tailshaft configurations.
Cited:46 CFR §61.20-17(e)(3)