Figure 21. Rocker arm assembly, exploded view.
Section XI. CYLINDER HEAD ASSEMBLY
where its modified force against the head of the piston
General The engine has two cylinder head
continues well through the power stroke.
Each cylinder head assembly covers three
cylinders. The cylinder head assemblies contain the
intake and exhaust valves, the rocker arm assembly,
and the energy cells. The cylinder heads are water-
Remove the engine housing (TM
cooled and also have oil galleries which lubricate the
rocker arm mechanism. The energy cells are located in
Remove the valve covers (TM 5-
the cylinder head directly opposite the fuel injector
nozzle. The fuel is injected by the fuel injector into the
combustion chamber and energy cell. The fuel which is
Remove the fuel injector assemblies
(TM 5-3820-20-20 2).
combustion. The air and fuel in the energy cell likewise
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ignites, but due to the design of the cell the pressure is
trapped and is permitted to expand only through the
metered opening, back to the combustion chamber