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|  MIL-V-62008B(AT)
3.4.8.2 Gunner seat. With no load the force required to pull seat adjusting pin shall not
exceed 15 pounds. The spring shall raise the seat not less 7 inches without personnel seated.
3.4.8.3 Commander seat.
3.4.8.3.1 Platform seat. The seat shall be capable of sliding upward a minimum of
12 inches with the spring force provided with no load on seat and platform assembly. The no
load force required to lift pin for seat adjustment shall not exceed 25 pounds measured at end of
lever. The platform latch shall lock securely in "up" position. The backrest shall be retained in a
vertical position when not used as a platform. The seat shall be retained in a vertical position
when not being used
3.4.8.3.2 Upper swing seat. The force required to position the seat pin for seat release
shall not exceed 15 pounds measured at the end of the lever. The force required to rotate the
swing seat shall not exceed 10 pounds when applied to the extreme edge of seat.
3.4.8.4 Loader seat. When seat is properly installed and not in use, the lifting spring
shall be capable of moving and retaining the seat in a vertical position.
3.4.8.5 Loaders and commanders hatches. With the hatch closed, the force required to
unlock the hatch shall not exceed 20 pounds. With the hatch unlocked, the force required to
push hatch to its extreme open-latched position shall not exceed 55 pounds measured at the hatch
closed lock handle. The force required to unlock hatch from an open latch position and rotate to
the balanced position shall not exceed 60 pounds at the end of the hatch opened lock handle. To
lock the hatch in the closed position with the hatch closed lock handle, the downward force shall
not exceed 50 pounds and the rotational force shall not exceed 20 pounds at the end of the
handle.
3.4.9 Electrical system. The vehicle electrical system shall consist of the hull electrical
subsystem and the turret and cupola electrical subsystems.
3.4.9.1 Lights. The internal and external lights shall operate as specified on applicable
drawings through all vehicle operating conditions. All electrical contacts and connections shall
maintain positive contact under all vehicle operating conditions.
3.4.9.2 Interior lighting. Each crew position except commander cupola, shall contain a
domelight to provide general illumination to assist with tasks at night or during closed-hatch
operation. The domelight shall contain provisions for adjusting light intensity and red filter for
night vision adaptation.
3.4.9.3 Hull-to-turret slipring. The hull-to-turret slipring shall provide power and signal
circuits capable of maintaining positive electrical contact between the hull and turret electrical
subsystems under all vehicle environments. A sealed air passage in the slipring shall be capable
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