What is a Ship's Stern Tube? PART23

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Types of Ships. Part19

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Maintenance Running checks should include: Gear box - oil level; inspect for leaks around casing; ensure pins and bolts in mechanical linkages are secure. Shaft bearings - check oil level in bearing sump; leakage through end seals; temperature of bearing. Stern gland - a leaking stern gland is a normal routine and is adjusted as a matter of course. See stern tubes in section above. Propeller shaft - check noise level to determine whether it is increasing. Regular maintenance schedules will include: Gearboxes - Adjust clutches and operating mechanism, clean filters and clean oil coolers. Drive train  Engine and shaft bearing moutings, loose shaft coupling bolts (perhaps due to mis-alignment) may need to be tightened. Mis-alignment of intermediate bearings will show up by overheating of the bearing. Survey servicing and repair schedules will include: Weardown survey- Allowance is determined by the manufacturer, but rules of thumb range from 3% of diameter as due for replacement to 6% bei
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