Section XI. ROCKER ARM ASSEMBLIES AND PUSH RODS

Section XI. ROCKER ARM ASSEMBLIES AND PUSH RODS

7-33. General

b. Remove and install the rocker arm assemblies

The rocker arm assemblies are mounted on top of the

and push rods as shown in figure 7-11.

cylinder heads, shielded under the rocker arm covers.

c. Disassemble the rocker arm assembly, as shown

The push rods are vertically positioned in openings on the

in figure 7-12, in the sequence indicated by the key

left side of the engine. When engine is operating, the

numbers. Reassemble in reverse sequence.

push rods are moved up and down by the revolving cams

on the camshaft. This movement is transmitted by the

rocker arms to the intake and exhaust valves, causing

7-35. Cleaning, Inspection, and Repair

them to open and close in correct timing with the positions

a. Refer to paragraph 1-4 for valve clearance.

of the pistons. The rocker arm shafts are made of steel

tubing, drilled to carry oil under pressure to each rocker

b. Adjust the valves after installation of the rocker

arm.

arm assemblies (para 3-36).

7-34. Disassembly and Reassembly

a. Remove and install the rocker arm covers as

Figure 7-10. Tachometer drive housing, disassembly and reassembly.

7-16