TM 9-1290-357-15
d. Install spring (6) in position and secure
e. Install pin (12) or knob (13) and aline pin
spring to body (11) with screw (9).
with holes in knob and screw (2).
e. Position spring (8) and ball (7) in the cor-
f. Drive in pin (12).
rect location.
g. Position telescope assembly (11) on body
(4).
f. Position the yoke (5) in the correct location
on top of ball (7) and spring (8).
h. Position bracket (10) on body (4) and rest
g. Install washers (2) and (3) and plungers
against telescope assembly (11).
(1) and (4) through the respective holes in the
i. Install washers (9) and screws (8) in their
body (11) any yoke (5). Tighten plungers.
respective location inside holes on bracket.
Note. Item numbers shown below refer to figure B3,
j. Install screw (7) through hole in bracket
located in appendix B, unless otherwise specified.
(10) and hole in telescope assembly (11).
h. Press inward on the red colored magnetic
k. Install compression spring (5), plug (3) on
needle clamp plunger and place needle (6) on pi-
elevation screw (2).
vot pin (B4, 13).
l. Install setscrew (1) in hole on body (4)
i. Install window (5) in body (4).
and secure screw.
j. Install gasket (3) and piece (2) to the body
m. Make certain that all components are in
(4).
their correct position and in alinement then tight-
k. Install the setscrews (1) in holes of piece
en screws (8) and (7).
(2) and gasket (3).
n. Install setscrew (6) in screw (7) and tight-
l. If required, secure notation strip (8) with
en.
screws (7).
5-47. Assembly of Azimuth Mechanism
5-46. Assembly of Telescope and Main
to Orienting Mechanism
Body Assemblies
Note. Item numbers shown below refer to figure B1,
Note. Item numbers shown below refer to figure B2,
located in appendix B.
located in appendix B.
a. Position the azimuth and orienting mechan-
a. Install elevation screw (2) in body (4) turn-
ism (3) into the body (4) and telescope assembly
ing screw in a clockwise direction.
(5).
b. Install retaining ring (15) on elevation
b. Install spring washer (2) and special screw
screw (2).
(1) into hole in orienting mechanism. Tighten
c. Install setscrew (14) and tighten.
screw which will secure the azimuth and orienting
mechanism (3) to the body (4).
d. Install knob (13) on elevation screw (2).
FINAL TESTS, ADJUSTMENTS, AND CORRECTIONS
Section IV.
5-49. Setting Up Azimuth Test Fixture
5-48. General
The tests, adjustments, and corrections that fol-
collimator (fig. 4-1), installed on a heavy steel
low are generally performed after repair and
table (or equivalent) to insure stability.
final assembly of the aiming circle M1 (fig. 1-1)
has been completed. Most of the tests, adjust-
b. Level fixture accurately with the three level-
ments, and corrections will be made utilizing the
ing screws on which fixture stands, until the
special tools and equipment listed in table 4-1 and
adapter support plate will remain level in any
location to which the azimuth ring is rotated.
referring to paragraphs 5-7 through 5-47 when
disassembly and assembly should be required.
Aiming circle M1 shall meet the tolerances speci-
stalled in collimating telescope holder (fig. 44)
and mounted on a universal surface gage, on the
fied in table 5-1.
