TM 11-6730-235-35
c. Remove the two screws (3) and nuts (4) that
with the appropriate slots on the focusing arm
secure the focusing arm (5) to the focusing arm
holster.
holster (20).
c. Tap or press the pinion shaft (15) through
d. Slide the focusing arm (5) out of the focusing
the slots on the focusing arm holster (2) and the
arm holster (20).
holes in the pinion spacer unit (16) and pinion gear
(17) so that equal portions of the pinion shaft (14)
e. Remove the top post stopscrew (6) and the
extend on either side of the focusing arm holster
bottom post stopscrew (7).
(20).
f. Pry the post cap (8) out of the post (12).
d. Slide the focus knobs (14) over the exposed
ends of the pinion shaft (15).
g. Turn the focus knobs (15) to raise the
focusing arm holster (20) until the pinion gear (1'7)
e. Secure the focus knobs (14) by tightening the
in the focusing arm holster (20) is free of the rack
setscrews of the knobs with a hexagonal (Allen
head) wrench.
(10).
h. Slide the focusing arm holster (20) off the
f. Secure the rack (10) and the shim (11) to the
post (12).
post (12) using the two screws (9).
i. Remove the two screws (9) that secure the
g. Slide the focusing arm holster (20) down
rack (10) and shim (11).
onto the post (12) far enough to allow the teeth of
the pinion gear (17) to engage the teeth of the rack
j. Remove the rack (10) and shim (11) from the
(10)-
post (12).
h. Press the post cap (8) into the top of the post
k. Loosen the setscrews (13) that secure the
(12) with the hole in the post cap lined up with the
focus knobs (14) to the pinion shaft (15) using a
corresponding hole in the post (12).
hexagonal (Allen head) wrench.
i. InstaIl the post top stopscrew (6) and the post
l. Slide the focus knobs (14) off the pinion
bottom stop-screw (7) in the post (12).
shaft (15).
j. Slide the focusing arm (5) into the focusing
m. Tap the pinion shaft (15) through the pinion
arm holster (20) and secure it with the two screws
spacer (16), the pinion gear (17) and the focusing
(3) and the two nuts (4).
arm holster (20).
k. Place the unslotted end of the pinion tension
n. Remove the pinion spacer (16) and pinion
spring (2) under the end of the focusing arm (5)
gear (17) from the focusing arm holster (20).
that is in the focusing arm holster (20).
o. Remove the two screws (18) and stopnuts
WARNING
(19) from the focusing arm antisag device on the
Be careful when compressing the pinion
focusing arm holster (20).
tension spring that it is not allowed to
release suddenly. The springing action of
5-5. Reassembly of Arm and Post Assembly
this part can drive it with sufficient force
to cause a painful injury.
a. Install the two screws (18) and the stopnuts
1. Place the screw (1) into the slot of the
(19) on the antisag device of the focusing arm
pinion tension spring (2) and then press the end
holster (20).
of the pinion tension spring toward the bracket
on the focusing arm holster (20) until the screw
b. Place the pinion spacer (16) and the pinion
(1) mates with the threaded hole. Tighten the
gear (17) together and position them in the
screw.
focusing arm holster (20) so that their holes Iine up
5-4
