TM 1-1520-238-23
4-182
Change 2
4.57.
NO. 1 AND NO. 2 ENGINE LOUVER ACTUATOR REMOVAL/INSTALLATION – continued
4.57.7. Adjustment
a. Apply external power – air (para 1.71).
b. Apply external power – electrical (para 1.70).
c. Enter pilot station (para 1.56). Observe all
safety precautions.
d. On pilot forward circuit breaker panel, close
ENG LVR circuit breaker.
e. Adjust actuator (2).
(1) Move actuator (2) up or down to fully open
louver vanes (15).
WARNING
If FIRE BTL PRI-RES switch is set off-
center during this task, extinguish
system will discharge. Keep FIRE BTL
switch centered. If injury occurs, seek
medical aid.
(2) Pull ENG FIRE PULL 1 or 2 handle (16).
(3) Move actuator (2) up or down to close louver
vanes (15).
(4) Tighten three actuator mounting screws (13).
(5) Push ENG FIRE PULL handle (16). Louver
vanes (15) must open.
(6) Pull and push ENG FIRE PULL handle (16)
three times.
(7) When handle is pulled, verify that stops (17)
and (18) are contacted by closed vanes (15).
If louver vanes do not properly close and
open, loosen screws (13); repeat adjustment
step e.
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ADJUST
2
13
13
15
M04-1023-5A
15
PILOT STATION
16
ENG
ENG
FIRE
PULL
2
FIRE
PULL
1
FIRE BTL
PRI
TORQUE
%
M04-1023-6A
RES
M04-1023-7A
15
18
15
17
