TM    55-2350-224-14 3-3-2.  Specific  Carrier  Instructions: a.  M548A1  Cargo  Carrier.  Remove  cargo  body canvas  and  bows,  and  restrain  them  inside  the cargo compartment. 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 need shackles. 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 3–2 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 load. Table 3-2. Bill of Materials for Transport by Railcar Item Quantity Description Shackle assembly 4 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 2–3, for more details.) Chain assembly, option 1 (fig 3-1), for carriers weighing 25,000 to 30,000 pounds Chain 8 NSN 4010-00-443-4845, 3/8 in. x 14 1/2 ft, grade 70, 6,600-pound safe working l o a d. Load binders 8 NSN 3990–01-213-1746, 3/8 in.-1/2 in., type 4 latching, 9,200-pound safe work- ing load. Chain assembly, option 2 (fig 3-1), for carriers weighing 15,000 to 25,000 pounds Chain 8 NSN 4010-00-803-8858, 3/8 in. x 10 ft, grade 80, 8,250-pound safe working load. Load binders 4 NSN 3990-01-213-1746, 3/8 in.-1/2 in., type 4 latching, 9,200-pound safe work- ing load. When Chain Not Available Wire rope 64ft Cable  clamps 5/8 in. 24 Thimbles 8 Come-along or cable 1 tightener Wire rope 128 ft Cable clamps, 1/2 in. 5/8 in. Thimbles 32 16 16 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 pounds. 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 pounds. 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 FF–C-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. 3-2