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|  MIL-T-45379D(AT)
b. At a depression of -10 or lower, the gun shall be capable of being traversed within
the zone of 90 on each side of the vehicle front centerline by power and manual
controls with elevation and traverse power switch ON. The traverse shall be
accomplished without vehicle interference.
c. At a depression of -4 or lower, the gun shall be capable of being traversed within the
zone from 90 each side of the vehicle centerline to 25 each side of vehicle rear
center line by manual control with elevation and traverse power switch OFF. The
traverse shall be accomplished without vehicle interference.
d. In the stabilized or unstabilized mode, at gun full depression and maximum turret
traverse rate, the gun shall automatically elevate upon passing the vehicle 180 frontal
arc. The elevation angle shall not exceed +2.5 and traverse over the vehicle rear
shall be completed without interference.
3.5.9.3.8 Override control. The commander control shall take over instantaneously the
power control of the turret and gun and the firing circuits from the gunner control when the
override switch in the commander control handle is actuated. Override of the system control by
the commander control shall be obtainable at the neutral position regardless of the handle
position of the gunner control. With the commander control and gunner control in the neutral
position, there shall be no movement of the gun or turret caused by depressing or releasing the
override switch in the commander control handle. With the gunner control in neutral position,
the gunner control shall regain system control instantaneously when the commander control
handle is released. These requirements apply to both stabilized and non-stabilized operation
(see 4.6.4.9.3.8).
3.5.9.3.9 Hydraulic pressure limit switch. When power traversing the turret at a rate not to
exceed 65 mils per second, the hydraulic pressure switch shall activate the hydraulic control
powerpack motor at a control system pressure gage reading of 880 to 1010 psi. With the
gunner's and commander's power and manual controls in neutral position, the hydraulic pressure
switch shall deactivate the hydraulic powerpack motor at a control system pressure as indicated
on the gage between 1150 and 1500 psi (see 4.6.4.9.3.9).
3.5.9.3.10 Turret traverse brake. With the elevation and traverse power switch on, the
stabilization switches off, and with the turret stationary, there shall be no traverse movement of
the turret when the gunner's power control handle is turned to its stop in a clockwise or
counterclockwise traverse direction without actuating the palm switch in the gunner's power
control handle (see 4.6.4.9.3.10).
3.5.9.3.11 Elevation shut-off valve. With the elevation and traverse power switch on and
with the stabilization switches off, the movement of the main gun shall not exceed 2 mils in the
elevation axis when the gunner's power control handle is tilted forward and backward to its stop
in either direction without actuating the palm switch in the gunner's power control handle
(see 4.6.4.9.3.11).
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