TM 55-3810-229-14/N
TM 55-3810-229-14/NAVFAC P-941
GENERAL INSTRUCTIONS
9, 14, 15, 19A, and 19B in Section I of the Rules
1. Parking brake must be firmly set with the parking
Governing the Loading of Commodities on Open-Top
brake levers wire-tied or blocked.
Transmission
gearshift lever must be placed and wire-tied in the
Cars and Trailers, published by the Association of
neutral position.
American Railroads.
2. Blocks must be placed between front axles and
4. Tensioning of wire rope can be accomplished with
chassis to prevent spring strain. (Material for this
an appropriate-size come-along mechanical hoist or
requirement is not included in table 7-1.)
equal tensioning device.
3. For further details, see General Rules 1, 2, 3, 4, 5,
Table 7-3. Application of Chain Tiedown for Securing MT-250 and MT-300 Cranes on Flatcars Equipped with Chain
Item No. Required
Application
A
Brake wheel clearance. Minimum clearance required is 6 inches above, in back of, and on both sides of,
and 4 inches underneath wheel.
B
4
1/2-inch-diameter alloy steel chain, extra-strength. Attach from tiedown eyes to outside tiedown channels.
C
4
1/2-inch-diameter alloy steel chain, extra-strength. Attach from tiedo wn eyes to inside tiedown channels.
D
2
1/2-inch-diameter alloy steel chain, extra-strength. Wrap around no. 1 axle and attach to inside tiedown
channels.
E
2
1/2-inch-diameter alloy steel chain, extra-strength. Wrap around no. 2 axle and attach to inside tiedown
channels.
F
2
1/2-inch-diameter alloy steel chain, extra-strength. Wrap around no. 3 axle and attach to inside tiedown
channels.
G
2
1/2-inch-diameter alloy steel chain, extra-strength. Wrap around no. 4 axle and attach to inside tiedown
channels.
H
1
1/2-/inch wire rope. Wrap around over the top of the boom and attach to outside tiedown channel on each
side. The wire rope ends should overlap 24 inches.
I
6
Clamps, W1/-inch. Secure the ends of the wire rope at the overlapped area with four clamps, spacing the
clamps 31/2 inches apart, with a minimum of 6 inches from the ends of the rope. Place one 5/8-inch
clamp at each tiedown provision and outside tiedown channel (fig 7-3, detail 3) to secure thimble and wire
rope together.
J
2
Thimbles, open-type, 1/z-inch. Place one at the lifting provision and the other at the outside tiedown
channel where the wire rope loops. Secure with one clamp.
K
2
Clamps, 5/s-inch. Use to secure thimble to wire rope.
GENERAL INSTRUCTIONS
1. When ordering specialized railway equipment,
4. Open hooks must be secured with wire over the
shippers should specify that cars be equipped with the
opening to prevent the hook from becoming disengaged
required quantity of tiedown devices. When carriers
from the chain link to which it is attached.
furnish cars that do not have built-in chains and
5. Unless equipped with self-locking devices, turn-
tensioning devices, chains and turnbuckles of
buckles used to tighten chains must be wired or locked
appropriate size and strength will be used. Load binders
to prevent turnbuckles from turning during transit.
will not be used in lieu of turnbuckles to tension tiedown
6. For further details, see General Rules 4, 5, 7, 19,
19A and 19B, Section I of the Rules Governing the
chains.
Loading of Commodities on Open-Top Cars and Trailers,
2. Parking brake must be firmly set with the hand-
brake wire-tied or blocked.
published by the Association of American Railroads.
3. Transmission gearshift lever must be placed and
wire-tied in the neutral position.
Section III. TRANSPORT ON FOREIGN RAILROADS
used in the movement of this type of equipment.
7-7.
General
Because of the unreducible height of the MT-250 and
The transportability guidance contained in this section is
MT-300 cranes, special clearance is required for
applicable when the cranes are transported on foreign
movement on foreign railroads. Clearances vary from
railroads. Consideration is given to single and multiple
one country to the next and within a country;
vehicle movements for the types of railcars normally
7-8
