TM 9-2350-256-34-1
(7) Harnesses. The cables and wires carrying
the electrical circuits, serving the various components of
the electrical system, are assembled into harnesses.
These carry the interconnecting splices in protective
covering and incorporate various types of terminals.
These terminals make positive and secure electrical
connections at the various points served by the harness
and provide for easy connection and disconnection
without splicing or soldering.
h. Transmission and output Reduction Units.. The
Allision Model XT-1410-4 cross-drive transmission is a
combined transmission and steering unit. It consists of a
basic transmission unit package to which has been
added the torque-converter package (front), steering-
clutch packages (both sides). The output-together with
the sprocket hubs, make out the output reduction units.
The outer flange of each output-reduction-gear output
shaft assembly carries 10 studs for attaching the
sprocket hub. The transmission provides a fluid torque
converter connection between engine and final drive ant
three selective gear ration forward and one ratio in
reverse. Repair information is contained in TM 9-2520-
215-34, Direct and General Support Maintenance for
Transmission, Cross-Drive Assembly (Allison Model XT-
1410-4).
i. Tracks and Suspension. The track laying system
includes 12 dual road wheels (six on each side) that ride
on the two 84-link tracks. Two double sprocket hubs
power the tracks. Two compensation idler dual wheels
and six track support dual rollers (three on each side)
make up the balance of the track laying portion of the
track and suspension system. The road wheels are
mounted on suspension arms which bear the weight of
the vehicle. Torsion bars, anchored to the hull at one
end and to each suspension arm at the other, provide
spring action for the suspension arms. An adjustable
link, between each Compensating idler wheel arm and
front road wheel arm, provides for adjustment of track
tension. Shock absorbers at the first, second and sixth
road wheels limit the rate of suspension arm movement
at those points. Double volute bumper springs at the first
and sixth road wheel arms provide cushioning during
maximum road wheel arm travel. Refer to TM 92350-
256-10, Operators Manual, and TM 9-2350-256-20,
Organizational Maintenance Manual, for replacement
and repair instructions
j
Hull and Cab. The hull and cab are constructed
of cast armor and armor plate welded into a single unit.
Armor is distributed to protect the crew and equipment
against small-arms fire, medium artillery shell fragments
and 20-pound antitank mines. Hull bottom armor is
equivalent to that of current medium tanks. The hull is
equipped with an armored, turret-type cupola that
provides a mount for the caliber 0.50 machinegun.
Additional armament stowed in the cab consists of two
M16 or M14 rifles, two submachineguns and 10 LAW
rockets. Four formfitting, padded, adjustable seats are
provided for the four-person crew. Two removable
pedestal stools accommodate two passengers. The two-
shot fixed fire extinguisher system may be operated from
inside or outside the vehicle. Two portable fire
extinguishers are mounted in the crew compartment.
Stowage racks for tools and other equipment are located
at various points inside the cab. Stowage facilities for
track sections, cables, tow bars and various recovery
tools and equipment are provided on the outside of the
hull and cab. A crew access door is located on teach
side of the cab. Two escape hatches in the front roof
area of the cab are provided for the drive and mechanic.
One escapee hatch at the rear roof area of the cab is
provided for the rigger. The commanders escape hatch
is located in the cupola. Six M17 periscopes provide
forward and partial side indirect vision for the driver and
mechanic during daylight and night driving. One M17
periscope provides indirect rearward vision for the rigger.
Four direct vision blocks, tow at front ant two at rear of
cab, provide vision for driver, mechanic and rigger. Six
direct vision blocks in the cupola base afford 360-degree
vision for the commander. An AN/WS-2(V)1A passive
night viewer may be installed in the drivers hatch when
blackout operations are required.
k.
Winch, Power Takeoff, Hoist and Spade. A
hydraulically operated broom, hoist winch, main winch
and spade comprise the basic recovery equipment of the
vehicle. they are powered by the main hydraulic pump
which is operated by a mechanical transmission driven
by a power takeoff from the
CHANGE 7 1-13