TM-9-2320-272-23-5
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 5 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-5 - Page 440 of 623
FIELD MAINTENANCE
TORQUE LIMITS
GENERAL
This work package provides general torque limits for screws used on M939, M939A1, and M939A2 vehicles. Special
torque limits are indicated in the maintenance procedures for applicable components. The general torque limits given
in this work package shall be used when specific torque limits are not indicated in the maintenance procedure. These
general torque limits cannot be applied to screws that retain rubber components. The rubber components will be
damaged before the correct torque limit is reached. If a special torque limit is not given in the maintenance
instructions, tighten the screw or nut until it touches the metal bracket, then tighten it one more turn
TORQUE LIMITS
Table 1. lists dry torque limits. Dry torque limits are used on screws that do not have lubricants applied to the threads.
Table 2. lists wet torque limits. Wet torque limits are used on screws that have high-pressure lubricants applied to
the threads. For metric fasteners, refer to Table 3. for torque limit. requirements.
HOW TO USE TORQUE TABLE
1.
Measure the diameter of the screw you are installing.
1
M9861DAA
Figure 1.
Screw Diameter.
2.
Count the number of threads per inch.
1
M9862DAA
Figure 2.
Threads Per Inch.
3.
Under the heading SIZE, look down the left-hand column until you find the diameter of the screw you are
installing (there will usually be two lines beginning with the same size).
TM 9-2320-272-23-5
0821
0821-1
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