Q7. Sketch & describe a piston rod stuffing box incorporated in a two-stroke crosshead diesel engine which serves to prevent sludge and dirty oil from entering the crankcase. (16)
Q9. With reference to stuffing box of a two-stroke main engine explain following
a) Why stuffing box is required in two stroke diesel engines. (8)
b) Explain the maintenance carried out on stuffing box during piston overhaul. (8)
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