TM 1-1520-238-23
2-669
2.186.
PILOT BORESIGHT RETICLE UNIT (BRU) MOUNT REMOVAL/INSTALLATION
2.186.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
2.186.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 9-1270-221-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
TM 9-1270-221-23
Pilot boresight reticle unit
removed
2.186.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. Remove boresight reticle unit (BRU) mount (1)
from BRU mount adapter (2).
(1) Hold two bolts (3). Remove nuts (4) and
washers (5).
(2) Remove two bolts (3) and washers (6).
(3) Remove mount (1) from adapter (2).
2.186.4. Cleaning
a. Wipe removed and attaching parts and sur-
faces with a clean rag.
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PILOT STATION
M04-3371-1
M04-3371-2
2
4
5
1
6
3
