Aux 1 Unit 11 Q10

1 / 10

Why is it important to inspect the oil grooves in a main thrust bearing during an inspection?

A) To increase the vessel's speed

D) To measure the engine's temperature

C) To change the type of oil used

B) To ensure proper oil distribution across the thrust pads, which is essential for preventing overheating and reducing friction

2 / 10

What should be checked for when inspecting the thrust pads of a main thrust bearing?

A) Presence of cracks, excessive wear, and adequate lubrication

B) The color of the pads

C) The material composition of the pads

D) The temperature of the surrounding engine block

3 / 10

What should be done if excessive wear is detected on the thrust bearing during inspection?

D) Decrease the oil flow to the bearing

A) Ignore the wear and continue operation

B) Replace or repair the thrust bearing components as necessary to restore proper function and prevent further damage

C) Increase the engine's speed to compensate

4 / 10

What is the role of vibration analysis in the inspection of a main thrust bearing?

C) It measures the temperature of the bearing.

B) It helps detect early signs of wear, misalignment, or other issues by analyzing vibration patterns, which can indicate problems before they become severe.

A) It is not relevant to thrust bearing inspection.

D) It increases the thrust capacity of the bearing.

5 / 10

During the inspection of a main thrust bearing, which tool is commonly used to measure the clearance between the thrust pads and the collar?

D) A micrometer

B) A feeler gauge

C) A torque wrench

A) A hammer

6 / 10

What is the first step in inspecting a main thrust bearing?

B) Cleaning the external surfaces to remove dirt and debris for a clear inspection

C) Increasing the engine's RPM

A) Removing the bearing entirely

D) Lubricating the bearing with extra oil

7 / 10

What is the significance of checking the alignment of the thrust bearing during inspection?

A) To reduce the size of the bearing

D) To adjust the engine's power output

C) To change the direction of the propeller shaft

B) To ensure that the thrust bearing is properly aligned with the propeller shaft, preventing uneven wear and potential failure

8 / 10

Why is it important to document the findings of a thrust bearing inspection?

A) To increase the vessel's insurance costs

C) To reduce the need for future inspections

D) To avoid legal liability

B) To maintain a record of the bearing's condition and any maintenance actions taken, which aids in future inspections and maintenance planning

9 / 10

What is the primary purpose of inspecting a main thrust bearing in a marine engine?

C) To decrease the vessel's draft

A) To increase the engine's speed

D) To adjust the engine's timing

B) To ensure that the bearing is effectively transmitting thrust from the propeller shaft to the ship's hull, preventing excessive wear or damage

10 / 10

How often should the main thrust bearing be inspected as part of a vessel's maintenance schedule?

B) Regularly, according to the vessel’s maintenance schedule, typically during routine dry-docking or as recommended by the manufacturer

A) Only when there is a noticeable problem

C) Once every decade

D) It should not be inspected regularly

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