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wrist pin bushings compression rings cylinder liner seals cylinder liner sealing ring
on both the external and internal top edges on both the external top and bottom edges on both the external and internal bottom edges on all the four edges
insufficient lubrication improper piston cooling blow-by overload operation
packings piston rings distributor rings scraper rings
low water in the expansion tank improperly seated valves low fuel oil pressure worn or broken cylinder liner sealing rings
In a two-stroke/cycle engine, the rings run hotter, requiring the end gap to be greater Some provision must be made in a two-stroke/cycle engine to keep the rings from bindingin the ports No gap is required to exist between the ends of the ring when cold in a two-stroke/cycleengine, but a small gap is required in a four-stoke/cycle engine The gaps should be staggered on either side of a piston in a two-stroke/cycle engine,while staggering is not necessary in a four-stroke/cycle engine
piston skirt pinion crosshead compression rings
the good sealing performance and the simple structure the good sealing performance and the short life expectancy the good sealing performance but the short life expectancy the good sealing performance and the lower cost
drill cooled hole cooled tube cooled bore cooled
gasket packing washer spring
worn gland sealing shaft worn wearing rings a bent shaft reversed pump coupling
worn or broken cylinder liner sealing rings high cooling water temperature worn or broken piston rings low fuel oil pressure
lube oil pumping rotating rings gas pressure behind the ring passage of hot gases
combustion gas blow-by excessive lubrication properly functioning rings insufficient cylinder cooling
thermal mechanical plastic elastic
clogged coolant passages a leaking cylinder head gasket low fuel oil pressure worn or broken cylinder liner sealing rings
on the sailing, the water in the aft peak tank should be excluded as much as possible the stuffing style ahead sealing shouldn ’t have any water leaking out Simplex astern sealing shouldn ’t have any oil leaking out Simplex ahead sealing can have some oil leaking out
nuts and bolts new joints spring force sealing rings
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