| 摘要 |
PURPOSE: To dispense with any seal member such as a gasket in order to prevent leakage of oil from being generated from a crank pulley part, to easily perform oil sealing in the conventional space without an adverse effect on bolt axial force of a pulley attaching bolt, to prevent the weight from being increased, and to achieve low cost. CONSTITUTION: A crank pulley 16 is provided on a crank shaft 8 by a pulley attaching bolt 24, and an annular sealing part 50 for preventing leakage of oil in collaboration with an inside diameter part 32 of the crank pulley 16 is provided on a seat surface part 30 of the pulley attaching bolt 24. |
