Q6. 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)
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)
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