TM 9-1240-401-34&P
12 Remove shaft collar (19) and knob (17) from ta-
pered pin (20).
13 Remove cover assembly (22) by removing two cap
screws (23) and two Iockwashers (24). Discard
Iockwashers
14 Remove setscrews (25 and 26).
15 Remove self-locking nut (27). Discard self-locking
nut.
16 Remove elevation shoulder screw (28) while turn-
ning elevation shoulder screw (28) and knob (29)
counterclockwise.
17 Remove three self-locking nuts (30) and retainer
plate (31). Discard self-locking nuts.
18 Remove elevation slide (21) and associated parts.
19 Remove flat washer (32).
20 Remove two studs (33) and stud (34) from eleva-
tion slide (21 ).
21 Unscrew threaded ring (35) from elevation slide
(21) using fabricated spanner wrench.
22 Remove concave washer (36), keyed ratchet (37),
dial ratchet (38), spring washer (39), ratchet shield
(40), concave washer (41), and knob (29) with as-
sociated parts from elevation slide (21 ).
23 Remove two headless straight pins (42 and 43)
from knob (29).
24 Remove setscrew (44) from round nut (45).
25 Remove round nut (45), spring washer (46), eleva-
tion dial (47), and disk (48) from knob (29).
26 Remove preformed packing (49) from elevation
slide (21 ). Discard preformed packing.
27 Remove preformed packing (50) from threaded
ring (35). Discard preformed packing.
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