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|  MIL-F-45557B
3.2.15 Rounds counter switch assembly. The rounds counter switch
assembly shall be fastened securely to the feeder housing by the screws.
The switch assembly shall perform its electrical function as a rounds
counter and last count indicator when the feeder is operated using
dummy cartridges.
3.2.16 Switch shoe. The switch shoe shall be retained on the feeder
housing by the pins and shall be held and returned to the extended position
by the spring. The switch shoe shall move through its full range of travel
under spring action without binding and shall perform its function to operate
the last round indicator switch when the feeder is operated using dummy
cartridges.
3.2.17 Solenoid assembly. The solenoid assembly shall be fastened
securely to the support by the solf locking nuts. The armature plate shall
rotate through its full range of travel without binding.
3.2.17.1 Solenoid operation. The solenoid shall actuate the feeder
actuating Shaft to declutch the feeder when 22 to 32 volts direct current
is applied to the solenoid. When the solenoid is de-energized it shall
allow the feeder actuating shaft to return to its normal extended position
under spring action of the lever shaft.
3.2.17.2 Solenoid dielectric withstanding voltage. The solenoid shall
withstand 1,200 volts root mean square at frequency of 60 Hertz for 5
seconds without disruptive discharge or deterioration.
3.2.17.3 Electrical circuit. The electrical circuit wiring of the
solenoid and switches to the connector shall be in accordance with the
wiring diagram specified on the applicable drawing.
3.2.17.4 Insulation sleeves. The insulation sleeves and wire
shall be securely retained in the connector, and fastened securely to the
feeder housing in accordiance with the explicable drawing.
3.2.17.5 Soldered connections. The lead wires from the switches and
the solenoid shall be securely soldered to the connector pins in accordance
with the applicable drawing.
3.2.18 Timing. The relationship of the sprockets to the feeder
gear shall be within the limits specified on the applicable drawing and
shall provide for smooth transfer of rounds from the ammunition belt to
the gun hand-off position.
3.2.19 Torque. The torque required to rotate the feeder shaft in
the feeder assembly without ammunition shall not be more than 20-ounce-
inches.
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