Question 84Motor Plants - 1st Asst/Chief

The correct answer is A) water contamination of the lube oil system. The milky-white coloring on the bearing surface indicates the presence of water in the lubricating oil, which can cause emulsification and deterioration of the oil. This is a sign of a problem in the lubrication system, such as a leaking seal or condensation buildup, that needs to be addressed. The other answer choices are incorrect: B) is incorrect because proper break-in wear would not result in a milky-white coloring. C) is incorrect because improper break-in wear would not necessarily lead to the observed milky-white appearance. D) is incorrect because the relocation of the overlay flashing would not cause the milky-white coloring.