Yanmar 3TNV82A-B, Service Manual

Page: 178 / 394

ENGINE
6-46
TNV DI Service Manual
2-Valve Cylinder Head
Figure 6-31
3. Place the cylinder head assembly on its
exhaust port side.
4. Place all the valves (Figure 6-32, (6)) in their
proper location in the cylinder head.
Figure 6-32
5. Place the cylinder head on the workbench with
the combustion side down to install the valve
springs. Install the valve spring
(Figure 6-32, (4)) and the spring retainer
(Figure 6-32, (5)).
6. Using the valve spring compressor tool,
compress the valve spring.
7. Insert the valve keepers (Figure 6-32, (2)) and
slowly release the tension on the valve spring.
Install the valve cap (Figure 6-32, (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 6-33, (2)) on the cylinder block.
2. Position the cylinder head on the cylinder head
gasket.
Figure 6-33
(1)
(2)
0001874
(6)
(5)
(4)
(3)
(2)
(1)
0001684
(1)
(2)
0001690
TNV_DI_SM_A4.book 46 ページ ２００７年１２月６日 木曜日 午前９時２３分