Yanmar 3TNV82A-B Service Manual page 196

ENGINE
IMPORTANT
The wave washers (Figure 6-73, (2)) must
be installed with the bow facing the rocker
arms (Figure 6-73, (1)).
Figure 6-73
IMPORTANT
Ensure the lubrication holes
(Figure 6-74, (1)) in the rocker arm shaft
are oriented correctly with respect to the
rocker arms (Figure 6-74, (2)).
(1)
Figure 6-74
3. Lubricate the rocker arm shaft. Slide the rocker
arm supports (Figure 6-75, (6)), wave washers
(Figure 6-75, (7)), rocker arms
(Figure 6-75, (8)), and fuel injector retainers
(Figure 6-75, (4)) onto the shaft.
6-64
(1)
(2)
0001878
(2)
(1)
0001914
Note: To properly align the rocker arm shaft
with the rocker arm shaft supports, first
reinstall one of the end rocker arm
supports (Figure 6-75, (6)) with a hole
for the shaft alignment stud
(Figure 6-75, (5)). Align the hole in the
rocker arm shaft and the hole in the
rocker arm support bracket. Reinstall the
alignment stud.
(1)
Figure 6-75
Note: Figure 6-75 shows components for one
cylinder. Components for all remaining
cylinders are assembled in the same
order.
4. Position the rocker arm assembly on a flat
surface. Reinstall the alignment studs
(Figure 6-75, (5)).
5. Place the rocker arm shaft assembly onto the
cylinder head.
6. If removed, reinstall the valve adjusting screws
(Figure 6-75, (2)) and lock nuts
(Figure 6-75, (3)).
7. Align the push rods with their respective rocker
arms.
8. Reinstall and tighten the rocker arm shaft
retaining bolts to the specified torque.
9. Tighten the rocker arm shaft alignment studs.
10. Adjust the valve clearance.
11. Reinstall the fuel injectors. See Installation of
the Fuel Injectors on page 7-42.
TNV DI Service Manual
4-Valve Cylinder Head
(3)
(2)
(5)
(4)
(8)
(7)
(6)
0001866