Table 71. Bill of Materials for Blacking and Tiedown of an M9 ACE on a General-Purpose Flatcar
Douglas-fir, or comparable, straight grain, free from material defects; Fed
2-inch x width-to-suit
40 linear feet
2- x 8-inch
16 linear feet
3- x 4-inch
26 linear inch
4- x 6-inch
10 linear feet
6- x 8- x 24-inch
Side stakes, 18 inches long, sized to tit
Common, steel; flathead, bright or cement-coated; para 18.104.22.168, Fed Spec
6 x 19, IWRC; improved plow steel; preformed, regular-lay; table X, Fed Spec
RR-W-410: 5/8 inch
Wire rope, U-bolt clips, saddled, single-grip, steel, Crosby heavy-duty or equal;
Standard, open-type: 5/8-inch
Table 7-2. Application of Materials for Blocking and Tiedown of an M9 ACE on a General-Purpose Flatcar
3 each side
1 each side
Brake-wheel clearance. Minimum clearance required is 6 inches above, in back of, on both sides of,
and 4 inches underneath wheel.
Chock blocks. Each to consist of 6- x 8- x 24-inch block cut 45 degrees on one end and 35 degrees on
the other end. Nail each block to a 2- x 8- x 47-inch piece of lumber with eight 20d nails so that two
blocks will have the 35 degree end forward, and two blocks will have the 45 degree end forward.
Place the 45 degree end under the front treads and the 35 degree end under the rear treads. Nail to
car floor with eight 20d nails.
Side stakes, 18 inches long, sized to fit stake pocket. Extend clamps 2 inches below stake pocket
and 8 inches above car floor. Locate in the stake packets nearest the center of the vehicle.
Side blocks. Each to consist of two pieces of 2-inch x width-to-suit x 10-foot lumber. Locate against
crawler treads, centered along ground contact length. Secure bath pieces to floor with ten 30d nails.
Wire rope, 5/8-inch. In a complete loop, apply from pintle through front and rear shackles to side
stake pockets as, indicated in figures 71 through 7-3. Place thimbles at the bottom of each stake
pocket and through each shackle. Overlap wire rope at least 24 inches.
Clamps, 5/8-inch. Fasten each wire rope with four clamps spaced about 3-1/2 to 4 inches apart.
Cribbing, 4- x 6- x 37-inch, solid block of lumber. Place under dozer blade. Nail each block to car
floor with six 20d nails.
Spacer, 3- x 4- x 13-inch solid block of lumber. Place under forward shackles to prevent cables from
passing over sharp edges of metal pad that protrudes from vehicle,
within the limits for width and height of the
some foreign-service flatcars. Flatcars representa-
passe-partout international (PPI) gauge railways.
tive of those in Europe that are available and
Transport of the vehicle on narrow-gauge foreign
suitable for transporting the vehicle are described
rail lines may result in restricted movement since
in table 73.
the vehicle exceeds the clearance envelopes of these
b. Materials. The materials required for block-
lines. Therefore, special routing may result in those
ing and tiedown of the vehicle on foreign-service
countries serviced by narrow-gauge rail lines.
flatcars are essentially the same as those used for
7-8. Transport on Foreign-Service
transporting the vehicle within CONUS. Detailed
guidance is contained in the 4th Transportation
Command Pamphlet 55-2, Tiedown Guide for Rail
a. General. The vehicle can be transported on