USCG USCG Motor
Set 2 • Question #163 of 382
Launch Interactive Practice Room A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will_____.
A
pound under load
B
be lubricated more easily than with sufficient crush
C
tend to rotate with the journal
✓ Correct Answer
D
have its back forced against the seat under load
USCG NMC Regulatory Explanation
Crankshaft deflection readings (measured between crankweb punch marks at bottom, port, top, and starboard) verify engine bedplate alignment, foundation chocking integrity, and main bearing wear.
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