Quantcast Alignment. - TM-9-4931-583-30-P0016

 

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Figure 2-1. Stand Assembly
Up
TM-9-4931-583-30-P Boresight Kit T-102300-101 (
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Table 2-1. BAGSE Alignment Check
TM 9-4931-583-30&P
(6) Remove forward gun frame (9, figure 1-2)
NO. 5. Connect illumination assemblies to cable assem-
bly (20) (step a. above). An illumination assembly will
from case No. 4. Attach fitting end to forward fitting of
upper frame assembly (19, figure 1-1), inserting dowel
be placed on each target telescope during each sighting.
pin of fitting such that forward gun optical frame as-
sembly curves downward. Tighten coupling securely
c.  Remove boresight telescopes (17) from case
using strap or spanner wrench.
No. 5.
(7) Remove right gun frame assembly (10,
figure 1-2) from case No. 4. Attach fitting end to right
NOTE
side coupling end of main frame assembly, inserting
dowel pin of fitting such that right gun optical frame
Each block assembly contains one or more
curves down ward. Tighten coupling securely using
holes in which the boresight telescopes are
strap or spanner wrench.
mounted for alignment sighting. Each block
and hole is identified by letters and num-
bers. Refer to figure 1-1 to identify block
(8) Remove left gun frame assembly (8) from
case No. 4. Attach fitting end to left side coupling end of
letters.
main frame assembly, inserting dowel pin of fitting
d. Calibration check all boresight telescopes
such that left gun optical frame curves downward.
Tighten coupling securely using strap or spanner
for alignment accuracy by the following method:
wrench.
NOTE
NOTE
The boresight assembly is now ready for
Check calibration of boresight telescopes
alignment check.
before use in any step in this procedure or
any time that the accuracy of the boresight
Alignment.
telescope is suspect or that validity of a
sighting angle measurement is in doubt.
(1) Inspect telescope mounting holes for debris
or foreign material. Clean in accordance with para-
Do not disturb frame during alignment pro-
graph 2-9.
cedure. This will cause erroneous align-
ment.
(2) Install and firmly seat boresight telescopes
in BAGSE movable frame left hand wing block (10,
NOTE
figure l-l) and right hand wing block (17) using holes
marked RWII and LWII (barrel of telescope horizontal
Firmly seat telescope tapered shaft in re-
or vertical to the floor).
ference hole each time telescope is used.
(3) Set main focusing adjustment collar/knob on
The BAGSE alignment check is conducted
each boresight telescope so that the infinity mark (lazy
eight  ) is near the focus reference mark ∇ or at the
by inserting the tapered mounting shafts of
the boresight telescopes into pairs of holes,
end of travel in the infinity (long range) direction. Sight
steps 1 through 21 of table 2-1, and by
through the telescope eyepiece and adjust main focus-
checking for alignment within listed toler-
ing collar until the target reticle appears sharply
ances. If any step is not within tolerance or
defined.
cannot be adjusted to tolerance, BAGSE
will be repaired or component will be ship-
(4) To check the alignment of a chosen tele-
ped to higher level maintenance for repair.
scope, place a boresight telescope illumination assem-
bly over the eyepiece of the designated target telescope
a.  Remove cable assembly (20, figure 1-2) from
and apply DC power to the lamp. Sight through the
case No. 6. Connect cable to 28 vdc power supply.
sighting telescope and observe the placement of the
sighting reticle center with respect to the target reticle
b. Remove illumination assemblies (12) from case
center.

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