TM 55-5811-188-14 Table 7-9.  Application of Chain Tiedown for Securing M1015 Carrier on Steel-Deck, Center-Rail Flatcar (Fig 7-6) Item No.  Required Application A - Brake wheel clearance.  Minimum clearance required is 6 inches above, in back of, and on both sides of the wheel and 4 inches underneath the wheel (fig 7-6). B 4 each unit Shackles.    For  carriers  having  a  1-inch-diameter  hole  in  the  towing  provisions,  use  a  1-inch- diameter  pin  with  a  7/8-inch  steel,  galvanized,  coated  anchor  shackle.    For  carriers  having  a larger  hole  in  the  towing  provisions,  use  an  appropriate  size  pin  and  shackle.    Attach  the shackle  to  the  front  and  rear  towing  provisions,  and  secure  the  pin  with  a  piece  of  wire  (for screw pin) or cotter pin (for other types of shackles). C 4 each unit Devices.  Use the Brandon single-chain tiedown device with  2-inch- diameter Excelloy chain, or similar, proof-tested to 27,500 pounds.  Apply the chain from the shackle on the vehicle to the car rub rail (detail 1, fig 7-6).  When necessary, items D and E may be substituted for item C. D 2 each unit Chains  with  turnbuckles.    Attach  the  chains  and  turnbuckles  to  the  shackles  and  car  rub  rails (detail 3, fig 7-6).  Details are listed in the General Instructions. E 2 each unit Chains.  Attach chains to the shackles and car rub rails (detail 3, fig 7-6).  Details are listed in the General Instructions. GENERAL INSTRUCTIONS 1. When ordering specialized railroad freight equipment, shippers  should specify cars equipped with tiedown devices along  with  the  quantity  shown  in  item  C.    If  conventional  chain  tiedowns  are  provided  in  lieu  of  the  tiedown  devices specified in item C, they must conform to the requirements of items D and E and must be applied as follows: a. Attach the two chain tiedowns (detail 3, fig 7-6, item E) to one end of the carrier and to the car tiedown facility. Pull as tight as possible (by hand), and attach the chain hook to an appropriate link. b. Attach the two chain tiedowns with the adjustable turnbuckles (detail 2, fig 7-6, item D) to the opposite end of the carrier and to  the car tiedown facility.  Tighten the turnbuckles to make all four chain tiedowns taut. NOTE Load binders are not to be used instead of turnbuckles in tension tiedown chains. 2. Carriers must face in the same direction and must be uniformly spaced along the length of the car to allow sufficient space for tiedown at each end of the car and between the carriers.  Tiedowns must be applied parallel to each other at the same end of the carrier and down from the carrier point of attachment to the car tiedown facility.  The angle of the tiedown chain must not be greater than 45°. 3. Handbrakes on carriers must not be set. 4. Gearshift levers must be placed in the neutral position. 5. Open hooks on chains must be secured with wire over the opening to prevent the hook from becoming disengaged from the chain link to which it is attached. 6. Turnbuckles  not  equipped  with  self-locking  devices  must  be  wired  or  locked  to  prevent  them  from  turning  during transit. 7. Carriers  weighing  up  to  25,000  pounds  each,  in  the  quantities  shown  below,  can  be  loaded  on  85-foot  or  longer cushioned rub-rail cars or similar flatcars, with center tiedown positions running the entire length of the car. Model No.  per 85-foot car No.  per 89-foot car M1015 3 4 8. For  further  details,  see  General  Rules  4,  5,  7,  and  19A,  Section  1,  General  Rules  Governing  the  Loading  of Commodities On Open Top Cars, published by the Association of American Railroad. Table 7-10.  Application of Chain Tiedown for Securing CUCV on Steel-Deck, Center-Rail Flatcar (Fig 7-7) Item No. Required Application A - Brake wheel clearance.  Minimum clearance required is 6 inches above, in back of, and on both sides of and 4 inches underneath the wheel. B 4 each Steel chains.  Use a 3/8-inch-diameter alloy steel chain, extra strength, proof-tested to a minimum of 18,000 pounds, or use either a 1/2-inch- diameter alloy steel chain, proof-tested to a minimum of  22,500  pounds,  or  a  1/2-inch-diameter  alloy  steel  chain,  extra  strength,  proof-tested  to  a minimum of 27,500 pounds.  Attach one chain tiedown to each tiedown shackle in front and rear. GENERAL INSTRUCTIONS When ordering specialized railway equipment, shippers should specify cars equipped with tiedown devices in the quantity and  strength  as  shown  in  item  B.    When  carriers  furnish  cars  that  do  not  have  built-in  chains  and  tensioning  devices, chains  shown  in  item  B  will  be  used  to  secure  vehicles.    Tiedown  chains  must  be  checked  for  twisted  or  kinked  links before they are applied to the vehicles. 7-11