Motor Plants & Auxiliary Boilers USCG Question #1326 (Set 25)

Where would a coarse screen wire mesh strainer normally be found on a diesel engine lubrication system?

Official USCG Answer & Rule Citation

Correct Answer: Option A — pump suction line

Coarse screen wire mesh strainers are installed on the lube oil pump suction line to protect positive displacement pumps from large debris and foreign objects while minimizing excessive pressure drop that could cause cavitation, adhering to standard marine diesel lubrication system design practices.

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