TM-9-2330-202-13-P

TRAILER, CARGO, 3/4-TON, 2-WHEEL: M101A1, M101A2 AND M101A3; TRAILER, CHASSIS, 3/4-TON, 2-WHEEL: M116A1 AND M116A2; TRAILER, CHASSIS, 1-TON, 2-WHEEL: M116A3

TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

DECEMBER 2011
TM-9-2330-202-13-P

  TM-9-2330-202-13-P - Page 377 of 552

FIELD MAINTENANCE
TORQUE LIMITS
CAUTION
If replacement cap screws are of higher grade than originally supplied, use torque
specifications for the original. This will prevent equipment damage due to over torquing.
Failure to comply may result in damage to, or destruction of, equipment or mission.
SCOPE
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
1.
Always use torque values listed in Figures 3 and 4 when a maintenance procedure does not give a specific
torque value.
a.
Figure 3 provides torque limits for SAE standard fasteners.
b.
Figure 4 provides torque limits for metric fasteners.
2.
Unless otherwise indicated, standard torque tolerance shall be ±10 percent.
3.
Torque values listed are based on clean, dry threads. Reduce torque by 10 percent when engine oil is used
as a lubricant. Reduce torque by 20 percent if new plated cap screws are used.
TIGHTENING METAL FASTENERS
When torquing a fastener, select a wrench whose range fits the required torque value. A torque wrench is most
accurate from 25 to 75 percent of its stated range. A wrench with a stated range of 0 to 100 lb-ft (0 to 136 N•m) will
be most accurate from 25 to 75 lb-ft (34 to 102 N•m). The accuracy of readings will decrease as you approach
0 lb-ft or 100 lb-ft (136 N•m). Ranges in Table 1 are based on this principle.
Table
1.
Metal Fasteners.
STATED RANGE
MOST EFFECTIVE RANGE
0 to 200 lb-in
(0 to 23 N•m)
50 to 150 lb-in
(6 to 17 N•m)
0 to 600 lb-ft
(0 to 813 N•m)
50 to 450 lb-ft
(68 to 610 N•m)
0 to 170 lb-ft
(0 to 230 N•m)
44 to 131 lb-ft
(60 to 178 N•m)
15 to 75 lb-ft
(20 to 102 N•m)
30 to 60 lb-ft
(41 to 81 N•m)
TM 9-2330-202-13&P
0079
0079-1


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