TM 55-5811-188-14Table 7-9. Application of Chain Tiedown for Securing M1015 Carrier on Steel-Deck, Center-Rail Flatcar (Fig 7-6)ItemNo. Required ApplicationA -Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on bothsides of the wheel and 4 inches underneath the wheel (fig 7-6).B 4 each unitShackles. 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 alarger hole in the towing provisions, use an appropriate size pin and shackle. Attach theshackle to the front and rear towing provisions, and secure the pin with a piece of wire (forscrew pin) or cotter pin (for other types of shackles).C4 each unit Devices. Use the Brandon single-chain tiedown device with 2-inch- diameter Excelloy chain, orsimilar, proof-tested to 27,500 pounds. Apply the chain from the shackle on the vehicle to thecar rub rail (detail 1, fig 7-6). When necessary, items D and E may be substituted for item C.D2 each unitChains 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.E2 each unitChains. Attach chains to the shackles and car rub rails (detail 3, fig 7-6). Details are listed inthe General Instructions.GENERAL INSTRUCTIONS1.When ordering specialized railroad freight equipment, shippers should specify cars equipped with tiedown devicesalong with the quantity shown in item C. If conventional chain tiedowns are provided in lieu of the tiedown devicesspecified 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 thecarrier and to the car tiedown facility. Tighten the turnbuckles to make all four chain tiedowns taut.NOTELoad 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 sufficientspace for tiedown at each end of the car and between the carriers. Tiedowns must be applied parallel to each other at thesame end of the carrier and down from the carrier point of attachment to the car tiedown facility. The angle of the tiedownchain 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 disengagedfrom 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 duringtransit.7.Carriers weighing up to 25,000 pounds each, in the quantities shown below, can be loaded on 85-foot or longercushioned rub-rail cars or similar flatcars, with center tiedown positions running the entire length of the car.Model No. per 85-foot carNo. per 89-foot carM1015348.For further details, see General Rules 4, 5, 7, and 19A, Section 1, General Rules Governing the Loading ofCommodities 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. RequiredApplicationA-Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on bothsides of and 4 inches underneath the wheel.B 4 eachSteel chains. Use a 3/8-inch-diameter alloy steel chain, extra strength, proof-tested to a minimumof 18,000 pounds, or use either a 1/2-inch- diameter alloy steel chain, proof-tested to a minimumof 22,500 pounds, or a 1/2-inch-diameter alloy steel chain, extra strength, proof-tested to aminimum of 27,500 pounds. Attach one chain tiedown to each tiedown shackle in front and rear.GENERAL INSTRUCTIONSWhen ordering specialized railway equipment, shippers should specify cars equipped with tiedown devices in the quantityand 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 linksbefore they are applied to the vehicles.7-11
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