Section XII. CYLINDER HEADS, INTAKE AND EXHAUST VALVES AND VALVE TAPPETS

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

a. Remove and install the housing assembly (para

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

intake and exhaust manifolds (para 337), V-belt (para 3-

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