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TM 55-3930-660-14
Table 2-2. Bill of Materials for Transport by Semitrailer
Item
Quantity
Description
Chain
8
Chain assemblies, 3/8-in. by
10-ft high-test welded steel,
8,250-pound safe working load
(16,500-pound breaking
strength); equipped with
matching grabhooks NSN
4010-00-803-8858
Load binders
8
Heavyduty, double grabhook,
Type 4, 3/8- to 1/2-in. (26,000-
pound breaking strength) NSN
3990-01-213-1746
*NOTE*
Chain assemblies and load binders are
basic issue items (BII) for the M172
trailer.
Load binders are generally marked with
an ultimate breaking strength rating. De-
pending on manufacturer, breaking
strength is about three times the safe
working load.
Chain is generally rated by proof test
load, or about two times the safe working
load.
b. Loading. To place the forklift in the tiedown
position on the semitrailer, use a crane of ade-
quate capacity (see para 4-4 for lifting guidance),
or drive the forklift onto a semitrailer if a suitable
ramp is available. Position the forklift so its
weight is distributed relatively equal over the
tractor and trailer axles. Set the parking brake.
Place the transmission in neutral. Lower the forks
to rest on trailer deck.
c. Tiedown. See figure 2–1 and table 2-3 for
instructions on restraining the forklift against
forces encountered at normal speeds and operat-
ing conditions. Wheel blocking of the VRRTFL is
not required. The highway loading restraint fac-
tors (LRF) used in figure 2-1 are listed in
appendix B.
Table 2-3. Tiedown Procedures for Securing VRRTFL to a
Semitrailer (Fig 2-1)
Item
Procedure
Chains/load
Properly rated chains and load binders must
binders (8
be available for tiedown. Install at indicated
required)
locations as shown in figure 2-1.
Wheel blocking is not required.
*NOTE*
All military trucks and trailers are
equipped with basic issue item (BII) load
binders and chain.
2-2
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