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Understand the construction and working of marine diesel engine exhaust valves and camshafts, including valve timing, overhaul procedures, common defects and inspection points. A practical learning guide for marine engineers preparing for MEO Class 4 examinations.

Understand how scavenge fires occur in marine diesel engines, their common causes, warning signs, emergency actions and preventive measures. A practical guide for marine engineers preparing for MEO Class 4 examinations.

A crankcase explosion is a serious hazard in marine diesel engines. Understand how hot spots lead to oil mist formation and ignition, how oil mist detectors and crankcase relief valves protect the engine, and what precautions must be taken after an alarm. This comprehensive guide also covers important safety points, working principles and practice questions for MEO Class 4 candidates.

Understand the construction and functions of a marine diesel engine bedplate, including cylinder block seating, tie rod holes, crankcase access openings and its role in supporting the engine structure.

Learn how a four-stroke marine diesel engine works, understand its valve timing diagram, and revise key cylinder events and valve overlap for MEO Class 4 examinations.