72-34-03
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(f)  Tighten all the screws/bolts to 36-40 pound inches (4.067-4.519 newton-meters) in the sequence that follows:
 -Front Fasteners.
 -Rear Fasteners.
 -Axial Fasteners.
 1)  Visually examine each fastener to make sure that it touches the washer. a) If the screw does not touch the washer, remove it,
 apply new lubricant, and install it again.
 NOTE: It is not necessary for the fastener to be
____ symmetrically installed in the recess in the liner segment.
 S 394-032-N00
 (2)  
If you installed a liner segment at the 11 o'clock or 1 o'clock
 position, apply sealant to the space adjacent to the bifercation
 fairing as follows (Fig. 402):

 (a)  
With a piece on clean cheesecloth that is moist with alcohol, clean the areas the sealant will touch.

 (b)  
Apply the primer to all cleaned surfaces. 1) It is necessary to apply the primer in less than two hours after you cleaned the area.

 2)  The primer must cure in air at ambient temperature for a minimum of two hours. a) The air must have a minimum relative humidity of 25%.

 (c)  
Apply sealant as follows: 1) It is necessary to apply the sealant from 2-24 hours after you applied the primer. 2) Use a hot air gun at 175°-225°F (79°-107°C) for 5-7 minutes to dry the sealant.

 3)  After you use the hot air gun, cure the sealant in air that has a minimum relative humidity of 25%, for eight hours, minimum, before you touch the parts.

 (d)  
Install the remaining liner segments.

 E.  
Put the Airplane Back to Its Usual Condition.

 S 414-033-N00
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______
 REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO
 PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.

 (1)  
Close the thrust reversers (AMM 78-31-00/201).

 (2)  
Close the core cowl panels (AMM 71-11-06/201).

 S 414-052-N00
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 414-053-N00
 (3)  
Close the fan cowl panels (AMM 71-11-04/201).

 S 444-054-N00

 (4)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

 TASK 72-34-03-004-034-N00
 4. Remove the Fan Exit Liner Segment (Inner Rear) (To replace a liner segment)
____________________________________________________________________________
 A. References
 (1)  
AMM 71-11-04/201, Fan Cowl Panels

 (2)  
AMM 71-11-06/201, Core Cowl Panels

 (3)  
AMM 78-31-00/201, Thrust Reverser System

 B.
Access

 (1)  
Location Zone
 412 Engine 1 - Intermediate Case
 422 Engine 2 - Intermediate Case
 432 Engine 3 - Intermediate Case
 442 Engine 4 - Intermediate Case

 (2)  
Access Panel
 415 Left Thrust Reverser Half - Engine 1
 416 Right Thrust Reverser Half - Engine 1
 425 Left Thrust Reverser Half - Engine 2
 426 Right Thrust Reverser Half - Engine 2
 435 Left Thrust Reverser Half - Engine 3
 436 Right Thrust Reverser Half - Engine 3
 445 Left Thrust Reverser Half - Engine 4
 446 Right Thrust Reverser Half - Engine 4

 C.
Prepare for the Removal of the Fan Exit Liner Segments

 S 044-035-N00
 WARNING: DO THE DEACTIVATION PROCEDURE TO PREVENT THE OPERATION OF THE
_______ THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).

 (2)  
Open the fan cowl panels (AMM 71-11-04/201).

 (3)  
Open the core cowl panels (AMM 71-11-06/201).
　
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