Yanmar 3TNV82A, Service Manual, Page: 152 / 394

ENGINE
6-20
TNV DI Service Manual
Crankshaft and Piston Specifications
(Piston Ring Cont.)
Model Inspection Item Standard Limit
Reference
Page
4TNV94L,
4TNV98,
4TNV98T
Top Ring
Ring Groove Width
0.0803 - 0.0811 in.
(2.040 - 2.060 mm)
-
See
Inspection of
Pistons,
Piston Rings
and Wrist
Pin on
page 6-83.
Ring Width
0.0764 - 0.0772 in.
(1.940 - 1.960 mm)
0.0756 in.
(1.920 mm)
Side Clearance
0.0031 - 0.0047 in.
(0.080 - 0.120 mm)
-
End Gap
0.0098 - 0.0177 in.
(0.250 - 0.450 mm)
0.0213 in.
(0.540 mm)
Second Ring
Ring Groove Width
0.0819 - 0.0825 in.
(2.080 - 2.095 mm)
0.0864 in.
(2.195 mm)
Ring Width
0.0776 - 0.0783 in.
(1.970 - 1.990 mm)
0.0768 in.
(1.950 mm)
Side Clearance
0.0035 - 0.0049 in.
(0.090 - 0.125 mm)
0.0096 in.
(0.245 mm)
End Gap
0.0177 - 0.0256 in.
(0.450 - 0.650 mm)
0.0287 in.
(0.730 mm)
Oil Ring
Ring Groove Width
0.1187 - 0.1193 in.
(3.015 - 3.030 mm)
0.1232 in.
(3.130 mm)
Ring Width
0.1169 - 0.1177 in.
(2.970 - 2.990 mm)
0.1161 in.
(2.950 mm)
Side Clearance
0.0010 - 0.0024 in.
(0.025 - 0.060 mm)
0.0071 in.
(0.180 mm)
End Gap
0.0098 - 0.0177 in.
(0.250 - 0.450 mm)
0.0217 in.
(0.550 mm)
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