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Figure 7-12. Rocker arm assembly, disassembly and reassembly.
Section XII. CYLINDER HEADS, INTAKE AND EXHAUST VALVES AND VALVE TAPPETS
7-37. Cylinder Heads, Intake and Exhaust Valves, and
7-36. General
Valve Tappets
The two cylinder heads are mounted on top of the cylinder
assembly. The rocker arm assemblies, exhaust valves,
and intake valves are positioned in the cylinder heads.
b. Remove and install the inlet and outlet headers
The bottoms of the cylinder heads form the top portions of
the combustion chambers.
These chambers are
surrounded by passages through which coolant is
c. Remove and install the carburetor (para 340),
circulated. The intake and exhaust valves, activated by
the valve tappets and push rods, open and close during
58), oil filters (para 3-60), oil cooler (para 3-62), oil filter
engine operation, allowing the fuel mixture to enter and
the exhaust gases to escape the combustion chambers.
7-18
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