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TM 10-4320-324-14
6-6. Wear Limits, Fits, and Tolerances (CONT).
Table 6-1. Wear Limits, Fits, and Tolerances - CONT.
Component
Minimum
Maximum
Cylinder head - continued:
Stud maximum length
8.3661 in.
(212.5 mm)
Cylinders:
Bore diameter - normal
3.937 in.
3.9378 in.
(100.00 mm)
(100.022 mm)
Bore wear - maximum
0.0004 in.
(0.1 mm)
Pistons:
Diameter - normal
3.9331 in.
3.9338 in.
(99.901 mm)
(99.919 mm)
Diameter of bore for connecting rod pin
1.3779 in.
1.3781 in.
(35.0 mm)
(35.006 mm)
Connecting rod pin diameter
1.3777 in.
1.3779 in.
(34.994 mm)
(35.0 mm)
2nd and 3rd ring groove widths
0.0984 in.
0.1020 in.
(2.50 mm)
(2.59 mm)
4th ring groove width
0.1969 in.
0.1980 in.
(5.00 mm)
(5.03 mm)
Piston Rings:
2nd ring clearance in groove
0.0039 in.
0.0051 in.
(0.10 mm)
(0.132 mm)
2nd ring maximum clearance in groove
0.0118 in.
(0.30 mm)
3rd ring clearance in groove
0.0039 in.
0.0051 in.
(0.10 mm)
(0.0132 mm)
3rd ring maximum clearance in groove
0.118 in.
(0.30 mm)
6-4
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