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Page Title:
Mounting the M171/M171A1 Mount on Cross-Leveling Fixture - continued |
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 TM 9-1240-375-34&P
0073 00
18
19
6
1 fc 4 3 8
10.
Set fire control quadrant (18) at zero mils plus correction factor, if any, and place on adapter plate (6).
NOTE
Fire control quadrant line of fire arrow should be toward cant vernier scale for pitch
level check and toward elevation vernier scale for cross level check.
11.
Level bubble (19) in fire control quadrant (18) should center in both cant and elevation. If not, center
level bubble using either the elevation knob or cross level knob as required.
17
15
1 fc 4 3 9
12.
If bubble in elevation level vial (15) and bubble in cross level vial (17) do not center, adjust by
performing the following steps.
0073 00-15
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