Question 13Motor Plants - 1st Asst/Chief70% to pass
One method of determining crankshaft misalignment is by_______________.
AI Explanation
The correct answer is B) taking micrometer readings between the crank cheeks opposite the crankpin every 90° of crank angle rotation.
This method is effective for determining crankshaft misalignment because it allows you to detect any variation in the distance between the crank cheeks at different points in the crankshaft's rotation. If the crankshaft is misaligned, the crank cheek spacing will change as the crankshaft rotates, which can be measured precisely using a micrometer.
The other options are less effective for this purpose. Option A measures only in two places, which may miss localized misalignment. Option C measures crank drop, which is not the same as crank cheek spacing. Option D measures bearing clearances, which does not directly indicate crankshaft alignment.
Related Questions
#11 A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will _______________.#12 The ring lands on a large, low-speed, main propulsion diesel engine piston may crack due to_______________.#14 When inspecting pistons, liners, and rings of a large two-stroke cycle diesel engine through the cylinder ports, a wet piston crown would indicate a_______________.#15 The most practical way of detecting an overload in one cylinder of an operating large, low-speed, main propulsion diesel engine is to_______________.#16 When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will be indicated?