MDE 15 End of Unit Quiz

MDE 15 End Of Unit Quiz

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Question 5:

During the inspection of the piston, what should be checked for proper condition?

D) Flywheel condition

B) Crankshaft journals

C) Valve seats

A) Piston skirts

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Question 3:

What should be checked if the inner diameter of the cylinder liner is found to be out of tolerance during calibration?

B) Recheck the measurement for accuracy

C) Reface the liner to bring it within tolerance

D) Ignore the deviation if it is minimal

A) Replace the cylinder liner immediately

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Question 4:

Why is it important to check for any unusual noises during the initial startup of an engine with a new liner?

D) To verify that the engine is operating at full power

A) To confirm that the engine is operating efficiently

C) To ensure that the fuel system is functioning correctly

B) To detect any potential misalignment or improper fitting of components

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3. Which safety precaution is most critical when handling the cylinder head removal?

C) Ensure the engine is in gear.

B) Wear appropriate personal protective equipment (PPE).

D) Check the fuel quality before proceeding.

A) Use a torque wrench for all bolts.

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4. What should be done with the coolant before removing the cylinder head?

C) Top off the coolant to prevent air pockets.

B) Drain the coolant to prevent it from spilling into the cylinders.

A) Leave the coolant in place to protect the system.

D) Add an inhibitor to the coolant system.

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Question 1:

When inspecting a removed diesel engine piston, what is the primary purpose of checking the piston for scoring or scratches?

B) To assess if the piston has been damaged by foreign objects

D) To measure the piston’s thermal expansion

C) To evaluate the piston’s lubrication quality

A) To determine if the piston rings are functioning properly

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Question 1:

What is the first precaution to take before starting an engine for the first time after maintenance?

D) Ensure the engine is at operating temperature

A) Check the fuel level

C) Test the exhaust system

B) Verify all bolts and fasteners are properly tightened

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Question 4:

During piston inspection, what fault might be indicated by scoring on the piston skirts?

B) Insufficient oil supply

D) Faulty ignition system

C) Worn cylinder liner

A) Incorrect valve timing

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Question 7:

What is a potential fault to look for on a piston during inspection that may affect engine compression?

B) Worn piston rings or ring lands

A) Cracked cylinder head

C) Bent push rods

D) Faulty fuel injectors

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Question 3:

What should be checked regarding the cooling system before an initial engine startup?

C) Test the fuel injectors

A) Ensure the coolant is at the correct level

D) Check the battery charge

B) Verify the exhaust system is clear

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Question 2:

What is a common sign of piston ring wear that can be observed during inspection?

C) Scoring on the piston surface

D) Loose connecting rod bolts

A) Cracking in the cylinder liner

B) Excessive oil consumption

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Question 6:

What fault might be detected in a cylinder liner that suggests coolant leakage?

C) Darkened oil with a milky appearance

B) Deposits of carbon on the piston crown

A) Corrosion on the exterior of the liner

D) Cracked piston rings

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