Engine Safety (Supplementary) USCG Question #930 (Set 12)

The reversing cams of some four-stroke/cycle diesel engines are brought into position by __________.

Official USCG Answer & Rule Citation

Correct Answer: Option B — sliding the camshaft along its axis

Reversing the direction of rotation on many four-stroke marine diesel engines is accomplished via a servomotor that slides the camshaft longitudinally along its axis to align astern cams with the followers.

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