Answer MEP Question 56

 Q9. With regard to a large 2 stroke engine: 

(a) Explain how can the cooling spaces within a cylinder jacket be examined without withdrawing the cylinder liner? 

(b) To what parts of a cylinder jacket would give attention after removing an old cylinder liner prior to fitting a new one? 

(c) What periodic attention must be given to the scavenge air space and piston-rod packing (Stuffing box) at the bottom of a cylinder liner?