TM 5-3895-346-14
LUG NUTS
TIGHTENING PROCEDURE
PROPER TIGHTENING OF CAP NUTS IS OF UTIMOST IMPORTANCE
FOR TROUBLE-FREE PERFORMANCE
Keep it tight
The mounting, being essentially a friction/compression assembly, depends upon the forces applied by the cap
nuts for its efficiency. Proper initial torquing will prevent broken studs, cracks at the stud holes, or damaged
ball seats.
Air wrench
The tool is used extensively because of its utility and speed. However, over- tightening or insufficient torque
can cause problems.
Insufficient torque can cause stud breakage and damaged ball seats. Overtightening can overstress studs and
damage threads.
It is imperative to check wrench torque output at regular intervals. This should be done with a torque wrench.
Figure 3.
Figure 4.
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