TM-55-2350-215-10-15

TM 55-2350-215-10-15

Suspension Characteristics

The HET-loaded

transport vehicle produces lower impact forces on

highway bridges when compared with other types of

similarly loaded highway vehicles.

However, the

appropriate State permit official should determine the

system's potential detrimental effect upon each highway

route requested by the major command.

MTMC Assistance.

Assistance in obtaining

approvals for highway movement of the loaded transport

system can be obtained from the Commander, Military

Traffic Management Command, ATTN:

MT-SA,

Washington, DC 20315, when highway movement can

be certified as essential for national defense and no

other transportation mode can be utilized.

Materials

The bill of materials for blocking and

tiedown of the M60-series vehicle on the M747

semitrailer is shown in table 5-1.

(1)

The vehicle may be driven to the

tiedown position on the semitrailer or towed on the

semitrailer over the ramp by use of the winches on the

HET truck tractor.

(2)

The M747 inside-track restraints must

be adjusted to receive tracks of the vehicle.

(3)

After the vehicle is placed at the

tiedown position, the vehicle transmission must be

placed in the neutral position, and the brakes should be

set.

(4)

A tiedown diagram compatible with

standard loading practices that will offer adequate

restraint against the forces encountered during

movements at normal speeds is provided in figure 5-1.

(5)

Data concerning the application of

materials required to restrain the vehicle are provided in

table 5-2.

Table 5-1.

Bill of Materials for Blocking and Tiedown of the MO60-Series Tanks on the M747 Semitrailer

Item

Description

Approximate

Quantity

Lumber

Douglas fir, or comparable, straight-grain, free from material defects; Fed Spec MM-L-751: 2- x

24 linear ft

4-in.

6- x 6-in.

36 linear ft

Nails

Common steel; flathead; bright or cement-coated; table X1-b, Fed Spec FF-N-105:20d

Wire rope

6 x 19, IWRC; improved plow steel; preformed, regular-lay; table X, Fed Spec RR-W410: 5/8in.

64 ft.

Clamps

Wire rope, U-bolt clips, saddled, single-grip, steel, Crosby heavy-duty, or equal; MIL-STD

16842:

5/8in.

Chain*.

.....

1/2 in 10-ft-long,-type-I, grade C, class 2; welded steel, high-test chain; Fed Spec RR-C-271;

with grabhooks equal to or better than the strength of the chain; not required if wire rope and

clamps are used

Loadbinders*.

Double-hook, heavy duty, 4-in, eccentric takeup, with chain grabhooks, for 1/4- to 1/2-in. chain;

16,000-lb safe working rating; 18 1/2-in. large lever, with two swivels, NSN 3990-00-171-9744;

not required if wire rope and clamps are used

Thimbles

Standard, open-type, 5/8 in.

Shackles

Anchor 1 3/8 in.-diameter pin, 2-in. opening, NSN 4030-00-162-7545, or equal

*Chains and loadbinders may be substituted for 5/8-in. wire rope and clamps.

5-4

TANK, COMBAT, FULL-TRACKED, M60-SERIES

TRANSPORTABILITY GUIDANCE