Figure 19. Injection pump drive gear assembly, exploded view.
Section X. ROCKER ARM ASSEMBLY
(3)
Refer to figure 20 and remove the
72.
General
rocker arm assembly and the push
The rocker arm assembly is comprised of two shafts on
rods from the engine.
which are mounted twelve rocker arms and eight shaft
Disassembly.
Refer to figure 21 and
b.
springs. The shafts are mounted on six brackets and
disassemble the rocker arm assembly.
the brackets are mounted on the cylinder heads. Six
studs inserted through the brackets and shafts prevent
74.
Rocker Arm Assembly Cleaning, Inspection,
the shaft from turning and also mount the rocker arm
and Repair
shaft assembly securely on the cylinder head. The
rocker arm shaft assembly is lubricated by means of oil
Cleaning. Clean all parts with an approved
a.
galleries located on the cylinder heads.
cleaning solvent and dry thoroughly.
73.
Rocker
Arm
Assembly
Removal
and
b.
Inspection and Repair.
Disassembly
(1)
Inspect the rocker arm shaft for wear
a.
Removal.
or distortion.
(1)
Remove the engine housing (TM
(2)
Inspect the rocker arm for wear on the
contact surface.
(2)
Remove the cylinder head covers (TM
(3)
Inspect the rocker arm bushings for
wear or damage.
(4)
Inspect the brackets for wear or
damage.
AGO 3456A
50
