Wrangler 4WD V6-3.8L (2009)
Rocker Arm Assembly: Description and Operation
Rocker Arm - Operation
ROCKER ARMS
The rocker arm pivots are on the rocker shaft. Rocker arms are used to translate up and down motions provided by the camshaft, hydraulic roller lifter,
and pushrod on one end, into a down and up motions on the valve stem on the opposing end.