ROCKER ARM ASSEMBLIES MAINTENANCE - CONTINUED
ADJUSTMENT - CONTINUED
Bar engine in direction of rotation and observe intake and exhaust valve rollers at any cylinder that is close to TDC
(top dead center). Choose a cylinder that has exhaust valves almost completely closed. Just as exhaust valves are
closing, intake valves will start to open. This is the valve overlap period.
VALVE OVERLAP PERIOD
STARTS TO OPEN