TM 9-2350-277-10
INSTALL/REMOVE M17 PERISCOPES -- Continued
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3.
Loosen two thumbscrews. Swing and hold warning lights panel out of the way.
4.
Install periscope in channel.
5.
Return warning lights panel to normal position. Tighten two thumbscrews to secure periscope and warning lights panel
in place.
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