Marine propulsion device bearing lubrication system

Details Marine propulsion device bearing lubrication system Marine propulsion device bearing lubrication system

F - Mech Eng,Light,Heat,Weapons

16

N

115/6

F16N 7/36 (2006.01) B63H 20/00 (2006.01) F16C 33/66 (2006.01)

Patent

CA 1311655

ABSTRACT OF THE DISCLOSURE A marine propulsion device comprising an engine, a lower unit adapted to be mounted on the transom of a boat for pivotal movement relative thereto about a generally vertical steering axis, the lower unit including a lower gearcase having therein lubricant, and a propeller rotatably supported by the lower gearcase, a generally vertical drive shaft rotatably supported in the lower unit and including an upper end driven by the engine, a lower end drivingly connected to the propeller, an axial bore extending upwardly from the lower end and defining a sleeve portion of the drive shaft, and an aperture extending radially through the sleeve portion, and internal threads within the axial bore for pumping lubricant from the lower gearcase upwardly through the axial bore to the aperture so that the lubricant flows outwardly through the aperture.

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