3-3-2. Specific Carrier Instructions:
a. M548A1 Cargo Carrier. Remove cargo body
canvas and bows, and restrain them inside the
b. M106/106A1 Mortar Carriers. Remove base-
plate and bridge assembly from the outside stow-
age positions, and restrain them inside the carrier.
c. M113A3 and M730A2 Carriers. Put the trans-
mission in the SL position.
d. M1068 Carrier. Requires only two shackle
assemblies. The rear tiedown provisions do not
3-4. Loading Procedures
a. Materials. The shipper must supply materials
for shipping and tiedown on the railcar when
chain-tiedown cars are unavailable. Table 32 lists
the necessary materials. It gives four different
options for tiedown materials.
The rear ramp of the M577-series carriers
requires special preparation to prevent it
from falling during transport. See appen-
dix E for instructions.
The M730A2 guided missile equipment
carrier has three tiedowns on the rear.
Therefore, it needs two more cables and/or
chains than specified in table 3-2.
For use in rail transport, load binders
must be marked with the safe working
Table 3-2. Bill of Materials for Transport by Railcar
Shackle, NSN 4030-00-279-4475. Bolt, NSN 5305-01-006-2072. washer (2),
NSN 5310-00-809-8541. Nut (2), NSN 5310-00-891-3428. (See Highway
section, table 23, for more details.)
Chain assembly, option 1 (fig 3-1), for carriers weighing 25,000 to 30,000 pounds
NSN 4010-00-443-4845, 3/8 in. x 14 1/2 ft, grade 70, 6,600-pound safe working
l o a d.
NSN 399001-213-1746, 3/8 in.-1/2 in., type 4 latching, 9,200-pound safe work-
Chain assembly, option 2 (fig 3-1), for carriers weighing 15,000 to 25,000 pounds
NSN 4010-00-803-8858, 3/8 in. x 10 ft, grade 80, 8,250-pound safe working
NSN 3990-01-213-1746, 3/8 in.-1/2 in., type 4 latching, 9,200-pound safe work-
When Chain Not Available
Come-along or cable
Option 3, for carriers weighing 15,000 to 25,000 pounds
NSN 4010-00-763-9361, 5/8-in. diameter, 6 x 19 IWRC improved plow steel,
regular lay, table X, Federal Specification RR-W-410, nominal BS of 35,800
NSN 4030-00-243-4441, 5/8 in., type I, single-saddled, wire rope clamp (Crosby
heavy-duty or one that will meet or exceed Federal Specification FF-C450),
class 1. Torque capacity equals 95 ft-1b.
NSN 4030-00431-6058, 5/8-in., type III, heavy split oval construction (open
pattern), Federal Specification FF-T-276.
Adequate strength cable tensioning device.
Option 4, for carriers weighing 25,000 to 30,000 pounds
NSN 4010-00-272-8848, 1/2-in. diameter, 6 x 19 IWRC, improved plow steel,
regular lay, table X, Federal Specification RR-W-410, nominal BS of 23,000
NSN 4030-00-243-4440 (1/2 in.),
NSN 4030-00-243-4441 (5/8 in.),
type I, single-saddled, wire-rope clamp (Crosby heavyduty or one that will
meet or exceed Federal Specification FFC-45). Torque nuts to 65 ft-1b for 1/2
in. or 95 ft-lb for 5/8 in.
NSN 4030-00-282-2512, 1/2-in., type III, heavy split oval construction (open
pattern); Federal Specification FF-T-276.