Tiedown Handbook For Rail Movements - SDDCTEA - U.S. Army

SIXTH EDITION SDDCTEA PAMPHLET 55-19
number of chains derived from the formula does not provide for a symmetrical configuration,
add chains such that each tiedown has the same number and equal numbers oppose each
other. For example, if the formula yields 9 chains required, use 12 chains to establish
symmetry about the 4 tiedown provisions.
The DODX 41000- and DODX 42000-series flatcars and repaired chains on some of the
DODX 40000-series flatcars are equipped with turnbuckle locking sleeves as shown in figure
9. The lock nut (if present) need not be used if the locking sleeve is properly applied.
As you remove chains preparing to unload flatcars, place the chains into the anchor
channels, so the chains cannot fall off the side of the car. Chains hanging off the side of the
cars can cause injuries, cause derailments, and destroy railroad infrastructure.
Unlocked. Notice that the Locked
notches on the sleeve are
resting on the ears and the turnbuckle is free to turn. To lock, slide the sleeve up, clear
of the ears, and rotate it 1/4 turn, then slide the sleeve down into the locked position.
Figure 9. Turnbuckle locking sleeves.
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