747-400 AMM 飞机维护手册 EXHAUST 2(45)

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 (7)  Turn the actuator splined drive with the 3/16 inch (5.0 mm) square drive to adjust the gimbal ring forward or rearward until you can install the retainers.
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 (8)  Install the retainers (2). (a) Measure the distance between the mounting brackets and the gimbal ring. (b) Remove the retainers (2). (c) Make two 0.050-inch thick laminated shims (3) to one-half the thickness measured in the step above. (d) Install the shims (3) between the gimbal ring and mounting bracket at the two locations.
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 (9)  Install the retainers (2).
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 (10) Install the retainer bolts (1) (Fig. 401).
 (a) Tighten the retainer bolts (1).
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 (11) If you install the upper non-locking hydraulic actuator do the steps that follow:
 (a) Remove all protective caps and plugs.
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(b)  
Install the couplings for the extend line flex hose and retract line flex hose (5) at the strut hydraulic connection.

 (c)  
Install the top retract hydraulic line (6) to the upper non-locking hydraulic actuator (3).

 (d)  
Install the extend port cap (4).

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 (12) If you install the lower non-locking hydraulic actuator do the steps that follow:
 (a)  
Remove all protective caps and plugs.

 (b)  
Install the retract line cap (2) on the lower non-locking hydraulic actuator (7) (Fig. 404).

 (c)  
Install the lower retract hydraulic retract line (4) to the lower non-locking hydraulic actuator (7).

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 (13) Stow the thrust reverser sleeve with hydraulic pressure.
 NOTE: With the sync lock removed, a small amount of hydraulic fluid
____ will come out of the lower non-locking hydraulic actuator.
 NOTE: There are two methods to stow the thrust reverser sleeve
____ which retracts all three actuators. The first method uses airplane hydraulic pressure. The second method uses a hydraulic ground service cart.
 (a)  If you use the airplane hydraulic power, do the steps that follow: 1) Make sure the reverse thrust levers are in the forward,
 stowed position with the DO-NOT-OPERATE tags installed.
 2)  For the applicable engine, make sure this circuit breaker is open and the DO-NOT-CLOSE tags is attached: a) P6 Main Power Distribution Panel
 1.  
6F13 T/R CONT ENG 1

 2.  
6E13 T/R CONT ENG 2

 3.  
6D13 T/R CONT ENG 3

 4.  
6C13 T/R CONT ENG 4

_
_
_
_
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
3)  Disconnect the electrical connector, D4180 (LH sleeve) or D4182 (RH sleeve), for the engine strut.
 NOTE: The auto restow system is in the deployed condition
____
 of the thrust reverser sleeve.

 4) Remove the streamered pin from the deactivation slide of the isolation valve. 5) Do not close the circuit breakers for the thrust reverser control.
 WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE AWAY FROM THE
_______ THRUST REVERSER BEFORE THE THRUST REVERSER OPERATION. WITH THE HYDRAULIC POWER SUPPLIED, THE DEPLOYED THRUST REVERSER WILL RETRACT WHEN THE ELECTRICAL POWER IS SUPPLIED TO THE ISOLATION VALVE. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 6)  For the applicable engine, remove the DO-NOT-CLOSE tags and close this circuit breaker.
 NOTE: The thrust reverser sleeves will retract and lock.
____ Do not remove the hydraulic power.
 a)  P6 Main Power Distribution Panel
 1.  
6F13 T/R CONT ENG 1

_

 2.  
6E13 T/R CONT ENG 2

_

 3.  
6D13 T/R CONT ENG 3
　
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