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Engine: Motor Plants and Auxiliary Boilers

Question 1,712 of 1,433

A diesel generator set on your salvage tug has a simplex lube oil strainer of the type shown in the illustration, situated on the discharge side of the lube oil pump. At a specified engine rpm and lube oil temperature, you notice that the pressure drop becomes unacceptably high. When you rotate the cleaning handle you notice that it is extremely difficult to rotate. What should be done?

USCG illustration MO-0057 for Engine Motor Plants and Auxiliary Boilers question 1712
Illustration MO-0057
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Appears on the 2026 sample exam for

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