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|  MIL-M-60170A(MU)
3.8.1.2 Shield actuating handle.- Handle 10542148 shall be manually
operable through the range required to raise and lower the shield to the
fully open to the fully closed position.
3.8.1.3 Handle locking latch.- When Latch 10542138 is released
while the shield is being raised, the handle shall lock the shield in the
fully open position. when the latch is released while the shield is being
lowered, the handle shall lock the shield in the fully closed position,
3.8.2 Wiper mechanism.- Pins "A" and "B", specified in the following
requirements, are shown on Electrical Schematic Drawing C8589781.
3.8.2.1 Motor.- With 24 volts dc (vdc) applied to Pins "A" and "B",
the wiper motor shall be capable of drawing the wiper blade across the
entrance window of the periscope head assembly in a constant reciprocating
motion while the window is frost free and dry. This requirement shall
also be met with 24 vdc applied to Pin "A" and 16 vdc applied to Pin "B".
3.8.2.2 Limit switch.- Subsequent to meeting the requirement of
3.8.2.1, remove the 16 vdc from Pin "B" while the 24 vdc is applied to
Pin "A". The wiper blade shall continue to operate until the blade re-
turns to and stops at the "O" position as shown on Drawing F1051336O.
3.8.2.3 circuit breaker.- With Shaft Assembly 10549773 secured to
prevent rotation and the 24 vdc applied to Pins "A" and "B", the motor
shall be de-activated by the circuit breaker within 15 seconds, maximum.
On release of the shaft, the motor must again drive the wiper. This
requirement shall also be met with 24 vdc applied to Pin "A" and 16 vdc
t
applied to Pin ` B".
3.9 Circuitry.- The circuitry of the mount shall be in accordance
with the applicable electrical schematic drawings.
3.10 Interchangeability.
3.10.1 Interchangeability - mechanical.- The mount shall be capable
of accepting Head Assemblies 10542204 and 10558203 and Body Assemblies
10542201 and 11731101.
3.10.2 Interchangeability - pressure retention.- With the head and body
assemblies mated to the mount, the mount shall withstand an internal
pressure o.f 5 + 0.10 pounds per square-inch gage. (psig) for a minimum of
2 hours without loss of pressure in excess of 0.2 pounds (psig).
-
4.
QUAITY ASSURANCE PROVISIONS
4.1 Responsibilty for inspection.- Unless otherwise specified in
the contract or purchase order, the supplier is responsible for the per-
formance of all inspection requirements as specified herein. Except-as
otherwise specified, the supplier may utilize his own facilities or any
4
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