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Page Title:
M17/M18 or M17A1/M18A1 Quadrant and Cannon Tube Synchronization Procedure - continued |
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 TM 9-1240-375-34&P
0057 00
NOTE
Elevation counter of M17/M18 and M17A1/M18A1 quadrants shall reflect tube
elevation and shall not exceed 1.0-mil deviation, excluding backlash.
6
5
1 fc 2 6 7
5.
Level elevation and cross level vials (5) of M171/M171A1 mount (6).
7
8
1 fc 2 6 8
NOTE
In the following steps, eliminate backlash by always making the last movement in
the counter mechanisms a low-number-to-high-number movement.
6.
Cross-level M18/M18A1 quadrant (7) using M172/M172A1 mount cross level knob (8).
0057 00-19
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