Quantcast M17/M18 or M17A1/M18A1 Quadrant and Cannon Tube Synchronization Procedure - continued -820360302

 

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M17/M18 or M17A1/M18A1 Quadrant and Cannon Tube Synchronization Procedure - continued -820360301
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TM-9-1240-375-34-P Quadrant Fire Control: M17 (1290-01-037-3883) and M17A1 (1290-01-515-8260); Mount Telescope and Quadrant: M171 (1240-01-039-7273) Manual
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Chapter 14. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
TM 9-1240-375-34&P
0057 00
TEST AND INSPECTION - Continued
M17/M18 or M17A1/M18A1 Quadrant and Cannon Tube Synchronization Procedure - Continued
9
9
7
10
11
11
12
12
1 fc 2 6 9
7.
Center bubbles in elevation level (9) on M17/M17A1 quadrant (10) and M18/M18A1 quadrant (7) using
elevation knob (11).
8.
Elevation counter (12) in both quadrants should be zero. If not zero, turn elevation knob (11) to set
counter at zero and adjust bubbles in elevation level (9) as necessary (WP 0048 00).
4
2
13
14
1 fc 2 7 0
9.
Place fire control quadrant (2) on seats on M172/M172A1 mount. Bubble (4) in fire control quadrant
level should center.
10.
If bubble (4) in fire control quadrant level (2) is not centered, adjust eccentric stud assembly (13).
11.
Loosen eccentric stud assembly (13) to disengage from spline plate (14).
12.
Turn and engage spline plate (14). Tighten eccentric stud assembly (13).
13.
Repeat step 10. If bubble (4) in fire control quadrant level (2) does not center, repeat steps 11 and 12
until centered.
END OF WORK PACKAGE
0057 00-20

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