TM-55-2320-280-14 HMMWV Transportability Guidance M998 Series Download
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25 August 1988 TM 55-2320-280-14 Figure 5-1. Tiedown of HMMWV on semitrailer. Table 5-1. Bill of Materials for Tiedown of HMMWV on Semitrailer Item Description Approximate quantity Wire rope ............................... 6 x 19, IWRC; improved plow steel; preformed, regular-lay; ta- ble X, Fed Spec RR-W-410C: 3/8-inch. 48 feet. Clamps ................................... Wire rope, U-bolt clamps, saddled, single-grip, steel, Crosby heavy-duty, or equal; Fed Spec FF-C-4500: 3/8-inch 24 Thimbles ................................ Standard, open-type, 3/8-inch.................................................... 8 Chain* .................................... General service, S-leg, high-tensile, 1/2-inch-wide, 10-foot-long, with two grabhooks; 16,000-pound safe-working rating. 4 Load binders* ......................... Type I, plain, 18-1/2-inch, operating lever, with two grabhooks designed for 1/4- to 1/2-inch chain; 16,000-pound safe- working rating; Fed Spec GGG-B-325A; NS 3990-00-171- 9774. 4 *Chain and load binders may be substituted for wire rope, clamps, and thimbles. Table 5-2. Application of Materials for Tiedown of HMMWV on Semitrailer (Fig. 5-1) Item No. Required Application A ........ 4 Tiedowns (detail 3). Each consists of one piece of 3/8-inch, 6 x 10, IWRC wire rope, length as required (about 12 feet). Form a complete loop between tie- down provision and appropriate semitrailer stake pocket. The angle between the tiedowns and the semitrailer deck should be as close to 45 degrees as possible. The wire rope ends should overlap at least 24 inches. 5-2