Motor Plants & Auxiliary Boilers USCG Question #1466 (Set 30)

Which of the following statements is correct concerning the connecting rod and piston assembly shown in the illustration? Illustration MO-0011

USCG Exam Illustration MO-0011
USCG Examination Diagram: Illustration MO-0011
Official USCG Answer & Rule Citation

Correct Answer: Option D — All of the above.

Marine diesel pistons often incorporate features where the piston rotates freely on a carrier thrust washer to equalize wear, utilize bolted or secured piston pins, and incorporate a thermal heat dam, making all listed structural details correct.

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