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12 Questions

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Common Failures of Crankshaft

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Questions and Answers

What are some common reasons for bearing failure on the crankshaft?

Proper lubrication, regular maintenance, and correct alignment

Inadequate lubrication, contamination, and misalignment vibration (correct)

High pressure, clean environment, and precise measurements

Excessive tightening, overheating, and rust accumulation

How can a lack of proper measurement during the last overhaul contribute to crankshaft damage?

It ensures correct liner installation

It prevents ridge wear on the journal

It increases the chances of bearing failure and damage to the crankshaft journals (correct)

It helps in early detection of ovality on the journal crankshaft

What effect can a broken crankshaft have on an engine?

Engine vibration and abnormal noises (correct)

Smooth engine operation

Increased engine lifespan

Improved fuel efficiency

How can reverse engineering be beneficial when analyzing crankshaft damage?

To understand the root cause of the damage/failure Signup and view all the answers

What is a possible consequence of not working grounding tools at the tail shaft?

Spark erosion leading to bearing damage Signup and view all the answers

How can liner damage or valve damage affect the crankshaft?

Liner or valve damage can indirectly lead to crankshaft damage Signup and view all the answers

What is the primary function of a crankshaft?

Convert reciprocating motion of the piston into rotational motion Signup and view all the answers

Which property of a crankshaft is designed to resist fatigue failure caused by cyclic loading?

Bending strength Signup and view all the answers

What type of loading can damage the surface hardness of a crankshaft?

All of the above Signup and view all the answers

Which operational parameter should be monitored in a system to prevent failure?

Cooling temperature Signup and view all the answers

How can failures in a crankshaft be prevented?

Regular maintenance and lubrication Signup and view all the answers

Why are alarms and shutdowns important in engine operation?

To prevent engine overload Signup and view all the answers