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TM 9-1240-375-34&P
0049 00
17.
Unscrew and remove spring plug retainer (29) from housing assembly (3).
18.
Remove O-ring (30) and key washer (28) from spring plug retainer (29). Discard O-ring.
19.
Remove compression helical spring (31) and V-type bearing (32) from housing assembly (3).
CAUTION
Support elevation knob in V block on solid surface to prevent damage to worm shaft
assembly.
34
35
33
1 fc 1 0 6
M17/M18 Quadrant
20.
Remove headless straight pin (33) and elevation knob assembly (34) from worm shaft assembly (35).
35
38
36
37
1 fc 1 0 7
M17/M18 Quadrant
21.
Remove spring tension washer (36), packing retainer (37), and O-ring (38) from worm shaft assembly
(35). Discard O-ring and spring tension washer.
0049 00-7
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