Yes. The camshaft operates valves that permit air entry to the cylinder, and exhaust exit from the cylinder. Many modern engines have two camshafts, one for the inlet and one for the exhaust.
The camshaft operated the inlet and outlet valves in the cylinder to admit fuel to the engine before ignition and expel the exhaust gas after the power stroke. The camshaft operates at half the crankshaft speed in a four-stroke engine.
The camshaft operates the valves on a 4 cycle engine.
A two-stroke engine does not have a cam or camshaft. Seeing there is no intake/exhaust valves it would be pointless to have a camshaft.
the camshaft
Camshaft
If the air intahe and exhaust valves were not actuated what damages expected with the diesel engine? The engine is a four stroke marine diesel engine and because of the rocker arm gears broken the valves remained closed and not actuated.
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push rods connected to the camshaft
Behind the camshaft vernier wheel on the Z19DT 120 engine
If it was a 4 stroke OHV diesel it was similar to gas OHV engines. They made 2 stroke diesels as well (Detroit Diesel's V series i.e. 6v-92) which still used a camshaft. SOHC and DOHC orientations were not prevalent on old diesels. 2 valves per cylinder was most common but not the only style.
Under the push-rods.
To start timing on the 2C Turbo diesel engine, you will have to locate or distinguish camshaft timing marks.