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 TM 9-1240-375-34&P
0051 00
ADJUSTMENT - Continued
NOTE
Correction and elevation counters must be set at zero when adjusting fire control
level.
A combination of adjustment procedures in steps 12 through 17 is necessary to center
bubble in fire control level.
12
13
11
17
14
16
15
1 fc 1 7 0
M17/M18 Quadrant
12.
Turn setscrew (11) and machine screw (12) until bubble (13) centers.
NOTE
If elevation level bubble can be adjusted within one graduation, perform steps 13, 18,
and 19 only. Otherwise, perform steps 13 through 19.
If eccentric adjustment is required on M18 quadrant, the level assembly (cross level)
must be removed.
17
16
18
1 fc 1 7 1
M17/M18 Quadrant
0051 00-10
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