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 TM 9-1240-375-34&P
0057 00
Illumination Inspection
WARNING
TRITIUM
GAS (H3)
When inspecting radioactively illuminated fire control equipment, follow radiation
hazard procedures in warning summary.
4
4
2
1
6
6
3
5
5
1 fc 2 6 5
1.
Take M17 quadrant (1) or M18 quadrant (2) into dark area, and wait 15 minutes.
2.
Take M17A1 quadrant (1) or M18A1 quadrant (2) into dark area, and turn on switch.
NOTE
Bubble in cross level (3) applies to M18/M18A1 quadrant only.
3.
Check that bubble in cross level (3), bubble in elevation level (4), elevation counter (5), and correction
counter (6) are clearly visible with even illumination.
Purge and charge M17/M18 or M17A1/M18A1 quadrant (TM 750-116).
M17/M18 or M17A1/M18A1 Quadrant and Cannon Tube Synchronization Procedure
1.
Mount quadrant to howitzer (TM 9-1025-211-20&P/TM 9-1025-215-25&P). Then perform
synchronization procedure (TM 9-1025-211-34/TM 9-1025-215-25&P).
0057 00-17
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