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.

Oiling rings rely on a static sump to supply lubricant to the bearing. Over time, contaminants like wear particles and moisture settle at the lowest point of the sump. Draining this sump periodically is the only effective way to remove these impurities and maintain the integrity of the lubricating oil.