TM-9-2330-335-14-P
SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)
SEPTEMBER 2008
TM-9-2330-335-14-P - Page 315 of 640
TM 9-2330-335-14&P
0068-1
0068
ORGANIZATIONAL MAINTENANCE
-
TORQUE LIMITS
SCOPE
00068
This work package lists standard torque values and provides general information for applying torque. Special torque values
and tightening sequences are indicated in the maintenance procedures for applicable components.
GENERAL
00068
1.
Always use torque values listed in Tables 2 and 3 when a maintenance procedure does not give a specific torque
value.
a.
Table 2 provides torque limits for SAE standard fasteners.
b.
Table 3 provides torque limits for metric fasteners.
2.
Unless otherwise indicated, standard torque tolerance shall be
±
10%.
3.
Torque values listed are based on clean, dry threads. Reduce torque by 10% when engine oil is used as a lubricant. Reduce
torque by 20% if new plated capscrews are used.
CAUTION
If replacement capscrews are of higher grade than originally supplied, use torque specifications for
the original. This will prevent equipment damage due to overtorquing.
TIGHTENING METAL FASTENERS
00068
When torquing a fastener, select a wrench whose range fits the required torque value. A torque wrench is most accurate from
25 to 75% of its stated range. A wrench with a stated range of 0 to 100 lb-ft (0 to 136 Nm) will be most accurate from 25 to
75 lb-ft (34 to 102 Nm). The accuracy of readings will decrease as you approach 0 lb-ft or 100 lb-ft (136 Nm). The following
ranges are based on this principle.
Table 1. Metal Fasteners.
STATED RANGE
MOST EFFECTIVE RANGE
0 to 200 lb-in.
(0 to 23 Nm)
50 to 150 lb-in.
(6 to 17 Nm)
0 to 600 lb-ft
(0 to 813 Nm)
50 to 150 lb to ft
(68 to 610 Nm)
0 to 170 lb-ft
(0 to 230 Nm)
44 to 131 lb-ft
(60 to 178 Nm)
15 to 75 lb-ft
(20 to 102 Nm)
30 to 60 lb-ft
(41 to 81 Nm)
6
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