MDE 15 Q5

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Question 1:

When inspecting a cylinder liner after removing the piston, which of the following should be checked for wear or damage?

A) Piston rings

B) Cylinder liner surface

D) Crankshaft bearings

C) Piston pins

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Question 5:

What fault in a piston pin can cause operational issues in a diesel engine?

D) Rust on the surface

A) Incorrect piston pin length

B) Excessive clearance or wear

C) Misalignment with the crankshaft

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Question 2:

What is a typical fault observed on a piston that might indicate engine problems?

D) Damaged valve seats

C) Bent push rods

B) Worn piston rings

A) Crankshaft endplay

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Question 1:

Which of the following is a common fault that can be found on a cylinder liner during inspection?

A) Piston ring land wear

C) Connecting rod bending

D) Camshaft wear

B) Cylinder liner scoring or scratches

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Question 6:

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

D) Cracked piston rings

C) Darkened oil with a milky appearance

B) Deposits of carbon on the piston crown

A) Corrosion on the exterior of the liner

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Question 4:

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

C) Worn cylinder liner

A) Incorrect valve timing

B) Insufficient oil supply

D) Faulty ignition system

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Question 3:

If a cylinder liner shows signs of excessive taper, what does this indicate?

B) Overheating issues

D) Faulty turbocharger

C) Uneven wear due to poor lubrication

A) Normal wear

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Question 7:

What should be examined on the piston pins during inspection?

C) Surface color and finish

B) Wear and clearance

A) Length and thickness

D) Thread condition

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Question 6:

What is a common procedure to check the piston for proper fit in the cylinder liner?

A) Measure piston ring gap

D) Measure the piston crown temperature

B) Check piston for free play in the liner

C) Inspect the piston for carbon deposits

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Question 4:

What should be done if scoring is found on the cylinder liner during inspection?

A) Continue using the engine without any changes

D) Ignore it if the scoring is minor

B) Polish the scoring to smooth it out

C) Replace the cylinder liner or recondition it

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Question 5:

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

A) Piston skirts

B) Crankshaft journals

D) Flywheel condition

C) Valve seats

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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

A) Cracking in the cylinder liner

B) Excessive oil consumption

D) Loose connecting rod bolts

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Question 7:

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

A) Cracked cylinder head

D) Faulty fuel injectors

C) Bent push rods

B) Worn piston rings or ring lands

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Question 3:

Which tool is commonly used to measure the wear of the cylinder liner?

C) Dial indicator

A) Vernier caliper

D) Bore gauge

B) Micrometer gauge

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