Which of the following statements is LEAST-Likely true?
A) When installing the crank, cleaning the recesses where the bearing lock tab will fit is often the cause of a tight crankshaft.
B) When installing the crank, clean the main bearing bores to prevent oil clearance and heat transfer problems.
C) It takes only a small film of dirt left from the hot tank, bake oven, or shot peening process to increase the oil clearance by 0.001" or more.
D) Often, during an oil clearance check on a newly rebuilt engine, excessive clearance is discovered.

Question

Quizplus · Accepted Answer

Explanation: The statement that cleaning the recesses where the bearing lock tab will fit is often the cause of a tight crankshaft is the least likely to be true. In reality, ensuring cleanliness during the installation of the crank, including the recesses for bearing lock tabs, is crucial for preventing issues. The other statements accurately reflect common practices and concerns in engine rebuilding and maintenance.

Which of the Following Statements Is LEAST-Likely True