TM 1-1520-238-23
2-674
2.188.
PILOT BORESIGHT RETICLE UNIT (BRU) MOUNT SUPPORT
REMOVAL/INSTALLATION – continued
c. Remove boresight reticle unit mount support
(1) from transparent barrier (2).
(1) Hold eight shear bolts (3). Remove eight self-
locking nuts (4) and washers (5).
(2) Remove support (1) from barrier (2).
(3) Remove eight bolts (3), washers (6), and
doubler (7) from barrier (2).
2.188.4. Cleaning
a. Wipe removed and attaching parts and sur-
faces with a clean rag.
2.188.5. Inspection
a. Check transparent barrier for surface
scratches, gouges, and severe crazing (para
2.11).
b. Check support and doubler for cracks. None
allowed.
c. Check support and doubler for corrosion
(para 1.49).
2.188.6. Installation
a. Install support (1) on barrier (2).
(1) Aline doubler (7) with barrier (2).
(2) Install eight bolts (3) through washers (6),
doubler (7), and barrier (2).
(3) Position support (1) on eight bolts (3).
(4) Hold eight bolts (3). Install washers (5) and
nuts (4).
b. Inspect (QA).
c. Install pilot boresight reticle unit (BRU) mount
adapter (para 2.187).
END OF TASK
3
7
M04-2141-2
6
4
5
1
2
M04-2141-3
2
1
7
6
3
5
4
