TM 5-4310-384-13
APPENDIX G. TORQUE LIMITS
Table G-1. Self-Locking Nut Breakaway Torque Values
Minimum Breakaway
Minimum Breakaway
Thread Size
Torque (In.-Lbs.)
Thread Size
Torque (In.-Lbs.)
10-32
2.0
5/8-18
32.0
1/4-28
3.5
3/4-16
50.0
5/16-24
6.5
7/8-14
70.0
3/8-24
9.5
1-12
90.0
7/16-20
14.0
1-1/8-12
117.0
1/2-20
18.0
1-1/4-12
143.0
9/16-18
24.0
NOTE: To determine breakaway torque, thread nut onto screw or bolt until at least two threads stick out. Nut shall
not make contact with a mating part. Stop the nut. Torque necessary to begin turning nut again is the
breakaway torque. Do not reuse self-locking nuts that do not meet minimum breakaway torque.
Table G-2. Compressor Repair and Replacement Standards
Mfr's. Dimensions and
Tolerances in
Inches (cm)
Desired Clearance
Inches (cm)
Maximum Allowable
Wear and Clearance
Components
Minimum
Maximum
Minimum
Maximum
in Inches (cm)
Cylinders:
Bore, low pressure
2.625
2.630
0.0158
0.0417
2.650
(6.668)
(6.680)
(0.040)
(0.106)
(6.731)
Bore, high pressure
1.750
1.760
0.0169
0.0427
1.775
(4.445)
(4.470)
(0.043)
(0.108)
(4.508)
Bores, out-of-round
0.0010
(0.0030)
Crankshaft:
Journal (rod) size
0.9990
0.9995
0.0008
0.0028
(2.537)
(2.539)
(0.0020)
(0.0071)
Taper
0.0010
(0.0030)
Out-of-round
0.0010
(0.003)
End play
0.000
0.007
0.007
(0.018)
(0.018)
Piston to Cylinder:
Low pressure, skirt
2.620
2.6205
0.0158
0.0417
2.605
(6.655)
(6.6561)
(0.0401)
(0.1059)
(6.617)
High pressure, skirt
1.740
1.745
0.0169
0.0427
1.720
(4.420)
(4.432)
(0.0429)
(0.1084)
(4.369)
G-1
