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TM 10-3930-669-34
Table 3-1. Wear Limits, Fits, and Tolerances
Component
Minimum
Maximum
Cylinder Head - continued:
Stud maximum length
8.3661 in.
(212.5000 mm)
Cylinders:
Bore diameter - normal
3.9370 in.
3.9378 in.
(100.0000 mm)
(100.0220 mm)
Bore wear - maximum
0.0004 in.
(0.1000 mm)
Pistons:
Diameter - normal
3.9331 in.
3.9338 in.
(99.9010 mm)
(99.9190 mm)
Diameter of bore for connecting rod pin
1.3779 in.
1.3782 in.
(35.0000 mm)
(35.0060 mm)
Connecting rod pin diameter
1.3777 in.
1.3779 in.
(34.9940 mm)
(35.0000 mm)
2nd ring groove width
0.0984 in.
0.1020 in.
(2.5000 mm)
(2.6100 mm)
3rd ring groove width
0.0984 in.
0.1020 in.
(2.5000 mm)
(2.5900 mm)
4th ring groove width
0.1969 in.
0.1980 in.
(5.0000 mm)
(5.0300 mm)
Piston Rings:
2nd ring clearance in groove
0.0039 in.
0.0052 in.
(0.1000 mm)
(0.1320 mm)
2nd ring maximum clearance in groove
0.0118 in.
(0.3000 mm)
3rd ring clearance in groove
0.0039 in.
0.0052 in.
(0.1000 mm)
(0.1320 mm)
3rd ring maximum clearance in groove
0.0118 in.
(0.3000 mm)
3-4
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