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 TM 9-1240-375-34&P
0049 00
ASSEMBLY - Continued
15
14
13
1
1 fc 1 1 6
M17/M18 Quadrant
13.
Apply a light coat of grease (item 16, WP 0152 00) to new O-ring (13) (item 14, WP 0112 00). Install
O-ring, packing retainer (14), and new spring tension washer (15) over worm shaft assembly (1).
16
1
17
1 fc 1 1 7
M17/M18 Quadrant
NOTE
Perform steps 14 and 15, and continue with step 17, if new worm shaft assembly has
been installed. Perform step 16 if previously-installed components are used.
14.
Install elevation knob assembly (16) on worm shaft assembly (1) and secure with setscrew, NSN
5305-00-282-8902. Using the pilot hole located on the knob, drill hole through worm shaft assembly.
15.
Remove setscrew from elevation knob assembly (16).
16.
Install elevation knob assembly (16) on worm shaft assembly (1).
CAUTION
Support elevation assembly knob in V block on solid surface to prevent damage to
worm shaft assembly.
17.
Install headless straight pin (17) in elevation knob assembly (16) and worm shaft assembly (1).
0049 00-12
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