Semicircular plug for preventing leakage of oil in a cylinder head of an overhead cam shaft engine

摘要

A semicircular plug to be fitted in a semicircular recess formed in either end of a cylinder head of an overhead cam shaft engine for preventing leakage of lubricating oil. The semi-circular plug has a pin hole in the center of its outer periphery for receiving the upper portion of a pin bedded in a pin hole provided in the center of the semicircular recess.