TM 5-3895-382-24
The inlet and the exhaust valves are opened and closed by the
rotation and movement of the following components:
Crankshaft
Camshaft
Valve lifters
Pushrods
Rocker arms
Valve springs
The camshaft gear is driven by the crankshaft gear. The
camshaft and the crankshaft a timed together. When the
camshaft turns, the valve lifters a moved up and down. The
pushrods move the rocker arms. The rocker arms make the
inlet and exhaust valves open and close in sequence with the
firing order of the engine. The valve springs push the valves
back to the closed position.
6-21