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TM 55-2410-237-14
Figure 5-4. D7 tiedown diagram for the M172A1 semitrailer (table 5-4 and figure 5-3).
Table 5-3 gives the bill of materials for blocking and
tiedown of the D7 tractor on the M172A1 semitrailer.
Table 5-4 provides the data concerning application of
materials for tiedown on the M172A1. Figure 5-4,
and details 2 and 3 of figure 5-3, provide tiedown dia-
grams compatible with standard loading practices
that will offer adequate restraint during movement at
normal speeds and operating conditions.
c. Loading.
WARNING
At no time during loading operations should
personnel, other than the guide and the
driver of the tractor, be on the semitrailer
bed.
WARNING
Loading should not be conducted with the
semitrailer sideways on a slope that exceeds
10 percent or with a tractor-to-semi-trailer
offset angle greater than 5°. Loading also
should not be conducted on a severe down-
grade, because the tractor driver may not
be able to safely control movement of the
tractor.
5 - 6
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