MDE 16 Q2

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Question 4: A possible cause of high bearing temperatures due to operational issues could be:

B) Frequent engine shutdowns

D) Reduced fuel injection pressure

C) Overloading the engine beyond its design capacity

A) Running the engine at lower than recommended speeds

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Question 2: If high bearing temperature persists after reducing engine load, what should be the next step?

C) Add water to the cooling system

A) Continue monitoring until the temperature normalizes

B) Check the lubricating oil flow and pressure

D) Increase the engine speed to circulate more oil

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Question 5: Which of the following could cause high bearing temperatures due to maintenance-related issues?

A) Regular lubrication maintenance

D) Properly sized bearing housing

B) Use of recommended bearing materials

C) Insufficient clearance between the bearing and shaft

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Question 3: Which of the following could be a possible cause of high bearing temperature in a diesel engine?

D) High exhaust gas temperature

B) Improper alignment of the bearing

C) Low fuel injection pressure

A) Excessive cooling water temperature

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Question 3: High bearing temperatures in a diesel engine can result from:

C) Contaminated lubricating oil

D) Decreased engine load

B) Under-torquing of the bearing bolts

A) Excessive cooling of the bearing

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Question 1: What is the first action that should be taken if a high bearing temperature is detected in a diesel engine during operation?

A) Increase engine speed to reduce load

C) Reduce engine speed and load to minimize heat generation

B) Immediately stop the engine

D) Add more lubricating oil to the bearing

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Question 4: After stopping the engine due to high bearing temperature, what is a critical check that should be performed before restarting?

D) Clean the air filters to ensure proper airflow

A) Ensure the cooling system is full of water

B) Inspect the bearing for signs of overheating or damage

C) Increase the amount of lubricating oil in the system

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Question 1: Which of the following is a potential cause of high bearing temperatures in a diesel engine?

D) Oversized bearing clearance

B) Improper alignment of the bearing

A) Excessive lubricating oil flow

C) Low ambient temperature

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Question 2: What could be a reason for high bearing temperatures in a diesel engine due to issues with the lubricating oil?

A) Low oil viscosity

C) Excessive oil pressure

B) Overheating of cooling water

D) Low lubricating oil temperature

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