Yanmar 6LY3 series, Руководство по обслуживанию

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ENGINE
Inspecting the Cylinder Block and Components
5-40
6LY3 Service Manual
© 2007 Yanmar Marine International
• After installing the piston ring, make sure it moves
easily and smoothly.
Figure 5-46
Figure 5-46
1 – Top Compression Ring
2 – Middle Compression Ring
3 – Oil Control Ring
4 – Top Compression Ring Gap
5 – Oil Control Ring Gap
6 – Middle Compression Ring Gap
7 – Direction of Piston Pin
8 – Direction of Side Pressure
• Stagger the piston rings at 120° intervals, making
sure none of them line up on the piston.
• The oil control ring is equipped with a coil
expander.
• The coil expander joint
(Figure 5-47, (2))
should
be opposite (staggered 180°) the oil ring gap
(Figure 5-47, (1))
.
Figure 5-47
Figure 5-47
1 – Gap
2 – Joint of Coil Expander
0005629
(1)
(2)
( 3 )
(4)
(5)
(6)
00056
3
0
(5)
(4)
(6)
(7)
( 8 )
120
120
120
00056
3
1
(2)
(1)