The component labeled as part #20 in the illustration is used to __________. Illustration MO-0050
Official USCG Answer & Rule Citation
Correct Answer: Option C — indicate the quantity of oil flow to the cylinder
Cylinder lubricator sight-glass indicators (Part #20) provide a visual drop-by-drop confirmation of the oil feed rate flowing through the mechanical lubricator quills to ensure proper liner and piston ring lubrication.
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