TM 1-1520-238-23
Change 8
1-329
1.109A. MAIN ROTOR TRACK AND BALANCE AVA KIT REMOVAL
1.109A.1. Description
This task covers:
Removal.
1.109A.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Helicopter rotor head balance and blade track run test
equipment (item 353A, App H)
Aviation vibration analysis test set (item 354B, App H)
Maintenance platform (item 209, App H)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
1.109A.3. Removal
a. Enter CPG station (para 1.56). Observe all
safety precautions.
b. Remove AVA equipment.
(1) Detach the following connectors from DAU.
(a) Detach TACHO 1 cable from DAU.
(b) Detach connector from DAU receptacle
labeled CADU.
(c) Detach MULTI-CH cable from DAU.
(d) Detach TRACKER 1 cable from DAU.
(e) Detach 28VDC cable from DAU.
(f) If connected, detach ACC 1 cable from
DAU.
(g) If connected, detach ACC 2 cable from
DAU.
c. Detach cable from CADU.
d. Remove DAU, CADU, and cable disconnected
from aircraft.
e. Disconnect SPU.
(1) Detach connector P4 (1) from SPU recep-
tacle J3 (2).
(2) Install protective cap on SPU J3 receptacle.
(3) Remove AH-64-to-DAU cable from aircraft.
GO TO NEXT PAGE
CREDIT CARD
MEMORY
+28 VDC (TO SIGNAL
PROCESSOR UNIT
M04-5209-1
DAU
CADU
J1
J2
J3
M04-5209-2
1
2
