TM 55-2200-001-12
Change 3
Sec. 6-Fig. 80-A (Rev--9-1984) Concluded)
TANKS AND SIMILAR UNITS MOVING IN CONTROLLED TRAIN SERVICE
FOR UNIT MOVES AND/OR EMERGENCIES--FLAT CARS
Item
No. of Pcs.
Description
A
Brakes wheel clearance. See Fig. 2, Sec. 1.
B
2
Metal chock blocks, Pattern 74. If metal chock blocks are not available, use wood block shown
in Sketch 2, with 35° angle against tank tread. Place block approximately 5 inches in from
side of flatcar. Secure to car floor.
C
2
Metal chock blocks, Pattern 76. If metal chock blocks are not available, use wood block shown
in Sketch 1, with 45° angle against tank tread. Place block approximately 5 inches in from
side of flatcar. Secure to car floor.
D
4
Shackles, anchor type with screw pin 1 1/4 inch, 1 3/8 inch pin diameter. Attach to tiedown fitting
on tank. In lieu of shackle, use 5/ inch, IWRC wire rope in complete loop, secured with four
5a inch cable clips.
E
4
Turnbuckles. 1 1/4 inch x 18 inch, jaw and eye for use with tanks equipped with shackles. 1 1/4
inch x 18 inch eye and eye turnbuckles when wire rope is used in lieu of shackles. If turn-
buckles are not equipped with lock nuts, they must be wire tied to prevent loosening. Items
"E" and "F" should be applied crosswise from tank to railcar.
F
4
Wire rope, 5/8 inch, 6 x 19 IWRC, form complete loop from lower end of turnbuckle through
stake pocket of railcar. Fasten wire rope with four 5/8 inch cable clips.
G
4
Thimbles. Apply at base of stake pocket for each Item "F".
GENERAL INSTRUCTIONS
1.
Load two tanks on DODX 100-ton heavy duty flatcar. Tank No. 1 should be positioned so
that hub of the lead
road wheel is approximately 72 inches from end of car. Place front chock blocks in position and nail in place using eight
0-D nails. Run tank up on front chock blocks and then position and nail rear chock blocks. Release brakes on tank and
allow tank to settle in place.
2.
Position tank No. 2 on car so that gun barrel of tank No. 1 is no closer than 4 inches to front of tank No. 2.
Position and secure blocks in same manner as outlined above. Gun barrel of tank No. 2 should overhang end sill of car
approximately 12 inches when properly placed.
3.
General Rule 8 (c), Section 1, applies to overhang of gun barrel beyond end sill of car.
4.
On 10’ 6” wide flatcar, the side overhang of the tank should be no greater than 9 inches on either side of the car.
5.
Gun barrels must be placed in the tank gun brace and securely fastened. If gun brace is missing or broken, two
3/8 inch wire rope loops must be placed around the gun barrel, securing one loop to each side of the tank. Substitution of
wire or banding is prohibited.
6.
All nuts on cable clips must be sufficiently tightened so as to crimp wire rope.
7.
Tank hand brakes must not be set.
See General Rules 1,2, 3, 4, 5, 7. 8, 9, 11, 15, 19 and 19-A for further details.
E-104.2
