Cub-cadet Yanmar 3TNV72 User Manual download pdf (Page 131)

ENGINE

6-32 TNV IDI Service Manual

Cylinder Head

Reassembly of Rocker Arm Assembly

Figure 6-31

IMPORTANT

Ensure the lubrication holes in the rocker

arm shaft (Figure 6-31, (1)) are oriented

correctly with respect to the rocker arms

(Figure 6-31, (2)).

1. Lubricate the rocker arm shaft. Slide the rocker

arm supports (Figure 6-32, (5)), springs

(Figure 6-32, (4)) and rocker arms

(Figure 6-32, (1)) onto the shaft.

Figure 6-32

Note: The rocker arm shaft fits tightly in the

rocker arm supports. Clamp the support

in a padded vise. Twist and push on the

rocker arm shaft to reinstall.

Note: On 3-cylinder models, the set screw is

located in the center support. On

2-cylinder models, the set screw is

located in the front (cooling fan) end

support.

2. Align the hole in the rocker arm shaft

(Figure 6-32, (7)) and the hole in the rocker

arm support (Figure 6-32, (5)). Reinstall the

alignment set screw (Figure 6-32, (6)).

3. Place the rocker arm shaft assembly onto the

cylinder head.

4. If removed, reinstall the valve adjusting screws

(Figure 6-32, (3)) and lock nuts

(Figure 6-32, (2)).

5. Align the push rods with their respective rocker

arms.

6. Reinstall and tighten the rocker arm shaft

retaining bolts to the specified torque.

7. Tighten the rocker arm shaft alignment screw.

8. Adjust the valve clearance. See Measuring and

Adjusting Valve Clearance on page 6-34.

(2)

(1)

0001914

0002160

(7)

(8)

(6)

(9)

(1)

(8)

(5)

(4)

(3)

(2)

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