The main engines on your harbor tug are protected with a low crankcase oil level detector protective device designed to provide an alarm when the main sump oil level drops below a certain level. It is malfunctioning, and upon investigation you determine from the technical manual that the oil level detector is a sealed unit. What statement best represents the best strategy to remedy this situation?

Question

Accepted Answer

The oil level detector must be replaced with a new detector if it is found to be defective, since field adjustments are not possible on this type of unit.

Answer

The oil level detector is adjusted just as if it was an unsealed unit, but the seals must be re-established before placing the unit back into operation.

Answer

The oil level detector is adjusted just as if it was an unsealed unit, without regard to any seals associated with the unit.

Answer

The oil level detector seals must be broken before adjustments can be made, as long as new seals are established before placing the unit back into operation.