Tensioner arm and chain guide with passages for oil drainage

摘要

A tensioner arm and a chain guide are constructed with an oil-escape portion, which is designed to allow for the drainage of oil that collects on the back side of the tensioner arm or chain guide. The oil escape portion is comprised of a through-hole on the back side of the tensioner arm or chain guide or through-holes in the side walls located on the back side of the tensioner arm or chain guide.