A bearing using an oiling ring as a means of static oil feed must occasionally be serviced by removing the wear particles, grit, and moisture. How is this accomplished?

Correct Answer: Option D — Draining the bottom of the bearing lube oil sump.

Oil ring bearings utilize a sump to hold the lubricant. Over time, contaminants like wear particles and moisture settle at the lowest point of the sump. Draining this bottom section periodically is the standard maintenance procedure to remove these impurities and ensure the oil remains clean for effective lubrication.