747-400 AMM 飞机维护手册 EXHAUST 1(69)

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_______ POSITION WITH THE THRUST REVERSER SLEEVE EXTENDED. IF THE THRUST REVERSER SLEEVE IS EXTENDED, DAMAGE TO THE STRUT AND THE THRUST REVERSER SLEEVE WILL OCCUR.
 (3)  Make sure the thrust reverser sleeve is in the stowed position.
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 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
 (4)  Open the thrust reverser (sling method) to the 45 degree position (AMM 78-31-00/201).
 (a)  Make sure the hold-open rod is fully extended and locked.
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(b)  Release the hoist tension a small quantity to let the hold-open rod hold some weight.
 S 034-016-N00
 (5)  Disconnect the systems that follow which are between between the strut and thrust reverser.
 (a)  
Disconnect the wire harness at the two locations for each
 thrust reverser half.
 1) Install the dust caps on the connectors.

 (b)  
Disconnect the sense line for the nacelle zone ventilation
 valve on the torque box near the forward hinge of the left
 thrust reverser half only.

 (c)  
Disconnect the ground strap from the top torque box of the
 thrust reverser, near the forward hinge.

 (d)  
Disconnect the hydraulic pressure and return hoses which go to the thrust reverser actuators. 1) Install the protection caps on all hydraulic lines. 2) Use an applicable container to catch the hydraulic fluid.

 (e)  
Disconnect the flex hose of the cowl opening system from the
 strut installed union.

 

 NOTE: The flexhose starts from a union near the upper
____ non-locking actuator and connects to the quick release manifold for the hand pump.
 S 034-017-N00
 WARNING: MAKE SURE THE THRUST REVERSER IS CORRECTLY HELD BY THE
_______ HOLD-OPEN RODS AND SLING HOIST. IF THE THRUST REVERSER IS NOT CORRECTLY ATTACHED, THE THRUST REVERSER CAN SUDDENLY CLOSE AND CAUSE INJURY TO PERSONS.
 (6)  
Make sure the hoist holds some of the weight of the thrust reverser half.

 (7)  
Remove the nut (9) and washer (8) from the aft hinge.

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 NOTE: You can easily get to the aft hinge from behind the open
____
 thrust reverser. Go between the thrust reverser and the
 strut to remove the aft hinge nut and washer.

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 (8)  
Disconnect the rod end of the opening actuator from the thrust reverser upper bifurcation (AMM 78-31-06/401).

 (9)  
Attach the tag lines to the thrust reverser.

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 494-020-N00

 WARNING:_______ DO NOT GET BELOW OR NEAR THE THRUST REVERSER WHEN YOU LIFT IT.
 INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR IF THE
 THRUST REVERSER FALLS OR MOVES.
 CAUTION:_______ WHEN YOU CAREFULLY LIFT THE THRUST REVERSER, DO NOT LET THE
 THRUST REVERSER AND STRUT TOUCH.  CONTROL THE MOVEMENT OF THE
 THRUST REVERSER WITH THE TAG LINES.  IF THE THRUST REVERSER
 TOUCHES THE ENGINE OR OTHER EQUIPMENT, DAMAGE TO THE THRUST
 REVERSER CAN OCCUR.
 MAKE SURE THE TOP SKIRT FAIRING SUPPORTS DO NOT TOUCH THE
 STRUT.  DAMAGE TO THE SUPPORTS CAN OCCUR.

 (10)
 Make sure the thrust reverser is correctly held by the hoist, and close the hold-open rods.

 S 034-021-N00

 (11)
 Remove the forward hinge bolt (11), aft hinge bolt (10), and then the center hinge bolt (7).

 NOTE: A curved drift is necessary to make for an easier removal of
　
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