Principle of Operation of the Rocker Arms

Structurally, a rocker is a two-arm lever. At the end of the long arm is a hardened cylindrical surface called a brisk? It rests on the end of the valve stem.

A bolt is screwed into the end of the rocker's short arm to adjust the depth of the gap between the rocker arms and the valve. A hole is drilled in the body of the short arm, which serves as a lubricant supply. Through the adjustment bolt, the lubricant passes from the rocker axis to the upper tip of the valve pushrod rod. Rockers are made from steel sheets by forming or from steel billets by casting or forging. Both shoulders of the rocker have a T-section. Rockers are made from steel sheets by forming or from a steel blank by casting or forging. 

The axle used to fasten the rockers is hollow. A valve rocker, or rocker arm of Ram 4.7, is used to convert the translational movement of the pushrod rod upwards into the translational motion of the valve rod. From axial movements, the rocker, located in the middle between the two pillars of the axis, is held by a spiral spring.

The principle of the rocker's work

A valve rocker, or rocker arm, is used to convert the movement of the pushrod rod (or camshaft in an overhead valve design) into the translational motion of the valve stem. 

The camshaft cam rolls on one shoulder of the rocker of Dodge 3.7, lifting it. At this time, the long arm is lowered and pressed on the valve stem.

At the top of the cylinder head, the rocker is present. In the head of the block, rockers are mounted coaxially to each other. The position of the axis of the rockers is fixed by two pins pressed into the racks (a kind of support made as a single whole with the body of the cylinder head).