After following the prescribed procedures to measure the thrust bearing clearance shown in the illustration, the distance "F" is determined to be 200 mm, and 'f1' is 2.3 mm. Which of the following statements describes the condition indicated by these dimensions? Illustration MO-0121

Correct Answer: Option C — It is possible for the shaft to move axially 2.3 mm during astern operation and relates to an excess movement of 1.3 mm, 0.3 mm beyond the maximum worn play.

Given dimension F at 200 mm and f1 at 2.3 mm, the calculation accounts for baseline movement plus wear limits. This indicates axial shaft travel of 2.3 mm during astern operation, exceeding maximum allowable worn play by 1.3 mm beyond the standard 1.0 mm limit.