What is the function of component "13" shown in the illustration? Illustration MO-0122

USCG Exam Illustration MO-0122
USCG Examination Diagram: Illustration MO-0122
Official USCG Answer & Rule Citation

Correct Answer: Option B — The device delivers the oil for piston cooling, in addition to liner lubrication.

Component '13' functions as a specialized oil delivery nozzle providing continuous internal cooling fluid to the underside of the piston crown alongside cylinder liner lubrication.

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