Yanmar 3TNV88F, Руководство по обслуживанию

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ENGINE
3TNV88F Service Manual 6-27
Cylinder Head
Figure 6-30
3. Place the cylinder head assembly on its
exhaust port side.
4. Place all the valves (Figure 6-31, (6)) in their
proper location in the cylinder head.
Figure 6-31
5. Place the cylinder head on the workbench with
the combustion side down to install the valve
springs. Install the valve spring
(Figure 6-31, (4)) and the spring retainer
(Figure 6-31, (5)) .
6. Using the valve spring compressor tool,
compress the valve spring.
7. Insert the valve keepers (Figure 6-31, (2)) and
slowly release the tension on the valve spring.
Install the valve cap
(Figure 6-31, (1)). Repeat
the steps on all the remaining valves.
■
Reassembly of cylinder head
1. Carefully clean both the combustion surface of
the cylinder head and the top surface of the
cylinder block. Then place a new cylinder head
gasket
(Figure 6-32, (2)) on the cylinder block.
2. Position the cylinder head on the cylinder head
gasket.
Figure 6-32
3. Lightly oil the threads of the cylinder head bolts
(Figure 6-32, (1)) . Tighten the bolts to the
specified torque in two steps as shown in the
chart below. Tighten in the sequence shown in
(Figure 6-33) . See Special Torque Chart on
page 6-10 for specification.
4. Insert the push rods in their respective
positions.
Figure 6-33
1
2
K0001874
1
2
3
4
5
6
046621-00X00
First step 1/2 of final torque
Second step Final torque
1
2
046618-00X00
K0001875X01
Fan End
Camshaft Side
7
9
11
13
1
2
5
3
10
8
4
6
14
12
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