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Section III: PRINCIPLES OF OPERATION - TM-9-2350-238-20-20016
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TM-9-2350-238-20-2 Crane (CAB) Components Recovery Vehicle Full-Tracked: Light Armored M578 (
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ARMAMENT .  
TM
9-2350-238-20-2
1-11.
GENERAL
(CONT).
d. Gas-Particulator
Unit.
The
gas-
(2) T h e  M 5 7 8  R e c o v e r y  V e h i c l e  i s
capable of long-range, high-speed operation
particulator  unit  is  used  with  face  masks  to
protect the crew members from toxic gases
on improved roads. It can traverse rough ter-
rain, muddy and marshy ground, snow or ice,
(except carbon monoxide) and extremely dus-
ty conditions. The unit is mounted between
and it can ford streams to a depth of 42 in.
the rigger and crane operator seats in the
(107 cm). The vehicle has: 1) a low, all-
welded  steel  structure  with  a  turret-mounted
cab.
cab;  2)  a  suspension  lock-out  system,  and  3)
Turret Traversing System.
e.
a  spade  assembly.  The  spade  assembly  pro-
vides a stable platform to increase the lifting
capabilities of the winch. The suspension
(1) G e n e r a l . The  turret  traversing
lock-out  system,  boom,  winches,  cab,  and
system  consists  of  a  two-way  hydraulic
spade
are
hydraulically
powered.
Power
is
motor, hydraulically-released brake, and
planetary  gear  drive  unit.  The  direction  and
supplied by a V-8 diesel engine and a gear-
steer transmission.
speed  of  traversing  is  controlled  by  the  winch
operator using a lever on the control panel, or
b. C r a n e .
by using the remote controller when outside
the  vehicle.  When  operating  the  tow  winch,
(1) C a b . Is  an  armor  steel  weldment
the level wind traversing system automatically
which  houses  the  hydraulic  reservoir;  sup-
traverses the cab so the wire rope winds
ports boom, winches, and controls; and pro-
evenly on the winch drum. The winch oper-
vides protection for the crew members. Space
ator  can  override  and  level  wind  traversing
has  been  provisioned  for  radio  and  intercom-
system by using the control lever or the
remote  controller.
munication  equipment.  Doors  are  provided  for
access to the cab and stowage compart-
ments. The cab can be traversed a full 360
(2) Turret. The
turret
is
mounted
toward
degrees.
the rear of the vehicle. The turret can be
traversed  360  degrees.
(2) B o o m . Is a box section of steel plate
which can be raised or lowered by the hy-
(3) Turret  Bearing. The turret bearing is
draulic
cylinders
for
hoisting
operations.
a 4-point contact radial and thrust type ball
bearing on which the turret is mounted. The
(3) B o o m
Winch. Is
a
two-speed,
bearing  is  provided  with  lubrication  fittings
planetary-geared unit with an internal auto-
and  seals  to  prevent  foreign  matter  from
matic
brake.
The
winch
is
hydraulically
entering  the  bearing.  The  bearing  inner  race
powered and has a capacity of 30,000 lb
contains the ring gear of the traversing final
drive.
(13,620 kg) with 5/8-in. (1.6 cm) rope and
two-part  line.
f. E l e c t r i c a l
Power
System.
(4) Tow Winch. Is a  t w o - s p e e d ,
planetary-geared unit with an internal auto-
(1) G e n e r a / . Electrical  power  is  provided
matic
brake
which
has
the
load
capacity
of
by a 24-volt, 300 ampere generator and four
60,000 lb (27,240 kg) with a 1.0 in.
series-parallel connected 12-volt storage bat-
teries.
Leads
and
wiring
harnesses
distribute
(2.5-cm) diameter wire cable.
current
to
all
electrical
components.
Equipment.
The
com-
munications
equipment
installed
on
the
M578
(2) Circuit
Breakers. Thermal set, auto-
Recovery Vehicle consists of a radio set,
matic reset, 15 ampere and 20 ampere circuit
amplifier,  power  supply,  intercommunication
breakers protect the vehicle components and
set, and antennas. This equipment allows the
circuits.
crew
to
maintain
communication
with
the
driver and outside command posts.
1-10

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