Rocker Arm Assembly: Description and Operation

DESCRIPTION - ROCKER ARMS
The rocker arms are installed on the rocker arm shaft. The rocker arms and shaft assembly is attached to the cylinder head with seven bolts and retainers. The rocker arms are made of stamped steel.

OPERATION - ROCKER ARMS
The rocker arm pivots on the rocker shaft. Rocker arms are used to translate up and down motions provided by the camshaft, hydraulic lifter, and pushrod on one end, into a down and up motions on the valve stem on the opposing end.