Q6. a) State the circumstances owing to which it may be necessary to renew a cylinder liner of a 4-stroke auxiliary engine. (2)
b) Explain how the liner is removed. (5)
c) Explain how the new liner is fitted. (5)
d) State the important checks to be made before and after fitting. (4)
Q6.a) How does a modern 4-stroke medium speed marine diesel engine exhaust valve spindle rotate. (8)
b) What happens if the tappet clearance between the rocker arm tappet and the exhaust valve stem is too large? (8)
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