Yanmar 3TNV82A-B, Service Manual

Page: 195 / 394

ENGINE
TNV DI Service Manual 6-63
4-Valve Cylinder Head
Figure 6-70
3. Lightly oil the threads of the cylinder head bolts
(Figure 6-70, (1)). Tighten the bolts to the
specified torque in two steps as shown in the
chart below. Tighten in the sequence shown in
(Figure 6-71). See Special Torque Chart on
page 6-25 for specification.
1 – Fan End
2 – Camshaft Side
Figure 6-71
Reassembly of Rocker Arm Assembly
1. Reinstall the valve bridges (Figure 6-72, (3)) in
their original locations and ensure each seat
(Figure 6-72, (4)) is in place.
2. Insert the push rods (Figure 6-72, (2)) in their
original locations.
Figure 6-72
First Step 1/2 of final torque
Second Step Final torque
(2)
(1)
0001872
(1)
(2)
0001875
3
6
8
10
12
14
16
18
5
4
2
1
13
11
9
7
17
15
(1)
(2)
7
9
11
13
1
2
5
3
10
8
4
6
14
12
(2)
(4)
(3)
(1)
0001871
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