Yanmar 3TNV82A, Service Manual

Page: 153 / 394

ENGINE
TNV DI Service Manual 6-21
Crankshaft and Piston Specifications
(Piston Ring Cont.)
Model Inspection Item Standard Limit
Reference
Page
4TNV106,
4TNV106T
Top Ring
Ring Groove Width
0.0992 - 0.1000 in.
(2.520 - 2.540 mm)
-
See
Inspection of
Pistons,
Piston Rings
and Wrist
Pin on
page 6-83.
Ring Width
0.0961 - 0.0969 in.
(2.440 - 2.460 mm)
0.0953 in.
(2.420 mm)
Side Clearance
0.0024 - 0.0039 in.
(0.060 - 0.100 mm)
-
End Gap
0.0118 - 0.0177 in.
(0.300 - 0.450 mm)
0.0213 in.
(0.540 mm)
Second Ring
Ring Groove Width
0.0815 - 0.0821 in.
(2.070 - 2.085 mm)
0.0860 in.
(2.185 mm)
Ring Width
0.0776 - 0.0783 in.
(1.970 - 1.990 mm)
0.0768 in.
(1.950 mm)
Side Clearance
0.0031 - 0.0045 in.
(0.080 - 0.115 mm)
0.0093 in.
(0.235 mm)
End Gap
0.0177 - 0.0236 in.
(0.450 - 0.600 mm)
0.0268 in.
(0.680 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
0.0118 - 0.0197 in.
(0.300 - 0.500 mm)
0.0236 in.
(0.600 mm)
TNV_DI_SM_A4.book 21 ページ ２００７年１２月６日 木曜日 午前９時２３分