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TM 9-1240-375-34&P
0057 00
TEST AND INSPECTION - Continued
Backlash Inspection - Continued
5
8
6
1 fc 2 5 1
NOTE
Do not go past scribed line when turning counterclockwise. Ensure scribed index line
and index pointer are in perfect alignment.
6.
Rotate elevation knob (6) at least 1/2-turn clockwise. Then turn counterclockwise until index pointer
(8) aligns with scribed index line (5).
14
13
1 fc 2 5 2
7.
Rotate elevation handwheel (13) until bubble in M17/M18 or M17A1/M18A1 quadrant elevation level
(14) is centered.
0057 00-10
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