Aux 1 Unit 11 Q10

1 / 10

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

A) It is not relevant to thrust bearing inspection.

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

C) It measures the temperature of the bearing.

D) It increases the thrust capacity of the bearing.

2 / 10

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

B) The color of the pads

D) The temperature of the surrounding engine block

C) The material composition of the pads

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

3 / 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

4 / 10

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

D) Decrease the oil flow to the bearing

C) Increase the engine's speed to compensate

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

A) Ignore the wear and continue operation

5 / 10

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

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

A) To increase the vessel's insurance costs

C) To reduce the need for future inspections

D) To avoid legal liability

6 / 10

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

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

D) To measure the engine's temperature

C) To change the type of oil used

A) To increase the vessel's speed

7 / 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?

B) A feeler gauge

A) A hammer

D) A micrometer

C) A torque wrench

8 / 10

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

D) To adjust the engine's timing

A) To increase the engine's speed

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

C) To decrease the vessel's draft

9 / 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

A) Removing the bearing entirely

C) Increasing the engine's RPM

D) Lubricating the bearing with extra oil

10 / 10

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

A) Only when there is a noticeable problem

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

D) It should not be inspected regularly

C) Once every decade

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