TM-5-5420-279-10
Launch Chest Pack Umbilical Cable
2.4.7.1
The umbilical multi-core cable is 33 ft (10 m) long with a multipin MIL plug on each
end. One end is plugged into the launch chest pack the other into the emergency
stop boxes located on the left and right A-frame stabilizer legs.
Chest Pack
2.4.8.1
The chest pack controls the hydraulic system during launch beam and bridge
deployment and recovery. It is attached to a harness worn by the chest pack operator.
The chest pack is linked to the electrical control cabinet via an umbilical cable.
FUNCTION
SELECT
TILT
ROLLER
CARRIAGE
STOW
EMPTY
HIGH
BANK
BEAM
A FRAME
FARBANK
MODE
BEAM
STOW
=LEVEK
L
TOP
BRIDGE
DRIVE
SEAT
RAISE
SELECT
ANGLE
ARTIC
BAN
WINCH
LIFT
LOW
EMERGENCY STOP
POWER
BANK
ROLLER
BRIGHT
OFF
FAULT
BRAKE
OFF
ON
DIM
OFF
ROLLER BRAKE
PUSH TO STOP - TWIST TO RESET
686A356c
Figure 2. 26 Chest Pack
2.4.8.2
The chest pack contains a proportional control joystick, a tilt roller/stow articulator
joystick, a lights bright/dim switch, a roller brake switch, a display screen, and an
emergency stop button. The joystick, switch and display screen are protected from
inadvertent operation and damage by a guard.
2.4.8.3
The display screen shows a series of illuminated captions with text legends to indicate
which function is in operation at the time.