Yanmar 3TNV82A-B, Service Manual

Page: 151 / 394

ENGINE
TNV DI Service Manual 6-19
Crankshaft and Piston Specifications
(Piston Ring Cont.)
Model Inspection Item Standard Limit
Reference
Page
3TNV88,
4TNV88
Top Ring
Ring Groove Width
0.0811 - 0.0817 in.
(2.060 - 2.075 mm)
-
See
Inspection of
Pistons,
Piston Rings
and Wrist
Pin on
page 6-83.
Ring Width
0.0776 - 0.0783 in.
(1.970 - 1.990 mm)
0.0768 in.
(1.950 mm)
Side Clearance
0.0028 - 0.0041 in.
(0.070 - 0.105 mm)
-
End Gap
0.0079 - 0.157 in.
(0.200 -.0400 mm)
0.0193 in.
(0.490 mm)
Second Ring
Ring Groove Width
0.0797 - 0.0803 in.
(2.025 - 2.040 mm)
0.0843 in.
(2.140 mm)
Ring Width
0.0776 -- 0.0783 in.
(1.970 - 1.990 mm)
0.0768 in.
(1.950 mm)
Side Clearance
0.0014 - 0.0028 in.
(0.035 - 0.070 mm)
0.0075 in.
(0.190 mm)
End Gap
0.0079 - 0.0157 in.
(0.200 - 0.400 mm)
0.0193 in.
(0.490 mm)
Oil Ring
Ring Groove Width
0.1581 - 0.1587 in.
(4.015 - 4.030 mm)
0.1626 in.
(4.130 mm)
Ring Width
0.1563 -.1571 in.
(3.970 - 3.990 mm)
0.1555 in.
(3.950 mm)
Side Clearance
0.0010 - 0.0024 in.
(0.025 - 0.060 mm)
0.0071 in.
(0.180 mm)
End Gap
0.0079 - 0.0157 in.
(0.200 - 0.400 mm)
0.0193 in.
(0.490 mm)
TNV_DI_SM_A4.book 19 ページ ２００７年１２月６日 木曜日 午前９時２３分