USCG USCG Motor
Set 5 • Question #239 of 382
Launch Interactive Practice Room On a large diesel engine installation, crankshaft axial alignment is maintained by the__________.
A
piston rod guides
B
engine thrust bearing
✓ Correct Answer
C
crosshead bearing
D
main shaft flexible coupling
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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