TM 9-4940-549-14&P
National Coarse
Foot pounds
Dia. and pitch
Maximum
Minimum
7
6
1/4 - 20
14
12
5/16 - 18
24
21
3/8 - 16
59
52
1/2 - 13
120
105
5/8 - 11
170
190
3/4 - 10
National Fine
Foot pounds
Dia. and pitch
Maximum
Minimum
5
6
1/4 - 28
10
9
5/16 - 24
16
14
318 - 24
40
42
1/2 - 20
70
60
5/8 - 11
120
100
3/4 - 16
Dimension
Clearance
Model 234C2
for disposal
Maximum
Minimum
Piston to bore:
0.0050
0.0030
0.0040
3 in. Cylinder dia.
0.0045
0.0035
0.0025
1-3/4 in. cylinder dia.
Ring end gap (ring installed in
bore) :
0.0200
0.0150
0.0050
Both cylinders
Piston pin to piston:
0.0012
0.0009
0.0003
Both cylinders
Piston pin to connecting rod:
0.00095
0.0007
0.0002
Both cylinders
Crank pin bushing to connecting
rod:
0.0020
0.0025
0.0010
Both rods
1-15/1-16 BLANK
