Rocker Arm Assembly: Description and Operation

DESCRIPTION





The rocker arms are made of stamped steel and have a operational ratio of 1.6:1 (Fig. 21).

OPERATION
When the push rods are forced upward by the camshaft lobes the push rod presses upward on the rocker arms, the rocker arms pivot, forcing downward pressure on the valves forcing the valves to move downward and off from their seats.