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 TM 9-1240-375-34&P
0076 00
ASSEMBLY - Continued
16
2
13
14
4
3
15
17
1 fc 4 9 3
8.
Position two machine keys (13) on quadrant adapter (2).
WARNING
Use sealing compound in well-ventilated area away from open flame. Sealing
compound is harmful to skin and clothing and may give off harmful vapor. Exercise
care whenever sealing compound is used.
9.
Apply sealing compound (item 13, WP 0152 00) to two socket head capscrews (15).
10.
Install two new lockwashers (14) (item 2, WP 0131 00) and two socket head capscrews (15) and tighten.
NOTE
To adjust eccentric stud assembly the M172/M172A1 mount and M18/M18A1
quadrant must be installed on the M198/M777 howitzer (TM 9-1025-211-10/TM 9-
1025-215-10). Also, the cannon tube must be set to zero elevation and the
M18/M18A1 quadrant level assembly leveled (TM 9-1025-211-10/TM 9-1025-215-10).
11.
Place fire control quadrant (16) on seats (17) of M172/M172A1 mount. Fire control quadrant level
bubble should center.
12.
If bubble is not centered, adjust eccentric stud assembly (3).
a.
Loosen eccentric stud assembly (3) to disengage spline plate (4).
b.
Turn eccentric stud assembly (3) and engage spline plate (4); tighten eccentric stud assembly.
13.
Repeat step 11. If fire control quadrant level bubble is still not centered, repeat step 12 above until
bubble is centered.
END OF WORK PACKAGE
0076 00-4
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