Chapter 2. TRANSPORTABILITY DATA - TM-55-2320-258-140009

TM 55-2320-258-14

TRANSPORTABILITY DATA

Section I. G E N E R A L

2-1. Scope

equipped with four axles, each with two sets of dual,

high-flotation tires. The two forward axles are

This chapter provides a general description of the

walking beam type and the two rear axles are fitted

items, identification photographs, tabulated

with an air suspension and air lift system.

transportability characteristics, and data that are

d. HET (Fig. 2-3). The truck-tractor, M746, and

necessary for movement of the HET and the C-HET

semitrailer, M 747, when connected as a unit, com-

system.

prise the heavy-equipment transporter system.

2-2. Descriptions

e. M911 (Fig. 2-4). The truck-tractor, commercial,

M911 is powered by a diesel compression-ignition

a. General. The heavy-equipment transporter

engine. The front suspension has semieliptic main

(HET) and the commercial heavy-equipment

and auxiliary springs. The rear suspension has

transporter (C-HET) are designed to provide

heavy duty springs, combined with equalizer beams

highway and limited cross-country capability for

and torque rods. The pusher axle is equipped with

transporting the combat tank and other items of

shock absorbers, air bags, and air suspension

heavy equipment and cargo.

system. Vehicle is equipped with on/off road tires.

b. M746 (Fig. 2-1). The truck-tractor, M746, is

f. C-HET (Fig. 2-5). The truck-tractor, com-

mercial, M911, and semitrailer, M747, when con-

dem front axles steer. The front and rear suspension

nected as a unit, comprise the commercial heavy-

are taper leaf-spring bogie type with shock ab-

equipment transporter system.

sorbers and high-flotation tires.

c. M747 (Fig. 2-2). The semitrailer, M747, is