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Page Title:
Table 5-1. Bill of Materials for Tiedown of the M.A.N. Truck on M871 and M872 Semitrailers |
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 TM 55-2320-282-14
Table 5-1. Bill of Materials for Tiedown of the M.A.N. Truck on M871 and M872 Semitrailers
Approximate
Item
Description
Quantity
Wire rope
6x19, IWRC, improved plow steel, preformed, regular-lay; table X, Fed Spec RR-W-410C: 5/8-inch
120 feet
Clamps
Wire-rope, U-bolt clamps, saddle, single-grip; steel, Crosby heavy-duty, or equal; Fed Spec FFG450,
32
type 1: 5/8-inch
3/4-inch
8
Thimbles
Standard, open-type; table II, type II, Fed Spec FF-T-276: 5/8-inch
8
*Chains
Alloy steel chain, W-inch diameter; chains proof-tested at least 22,500 pounds; RR-C271, type I, grade
8
C, class I welded steel alloy chains
*Load
Type I, plain, 18 1/2-inch, operating lever with two grabhooks designed for 1/4- to 1/2-inch chain; 16,000- 8
pound
binders
safer-working rating; Fed Spec GGG-B325A, NSN 39910-171-9774
*Chains and load binders may be used instead of wire rope.
Table 5-2. Application of Materials for Tiedown of the M.A.N. Truck on M871 and M872 Semitrailers
Item
No.
Required
Application
A
8
Tiedowns. Each consists of one piece of 1/2-inch, 6x19, IWRC, wire rope, length as required (about 12 feet). Form
a complete loop between truck tiedown provisions and appropriate semitrailer tiedown provision. The angle
between the tiedowns and the semitrailer deck should be as close to 45as possible. The wire rope ends should
overlap at least 24 inches.
B
32
Clamps. Place four on each item A at overlap area. Space clamps 21/ inches apart, with at least 6 inches from ends
of wire rope. Place one clamp on each item C. Tighten clamps so wire rope cannot slip.
C
8
Thimbles. Place one under wire rope where wire rope contacts semitrailer tiedown provision. Place one where
wire rope goes through shackle.
NA
8
Chains. Attach one end of each chain to each front and rear tiedown shackle. Pull chains straight back and attach
their ends to the semitrailer tiedown provision.
NA
8
Load binders. Tighten front and rear chains with load binders.
5-5
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