E.
Put the Airplane Back To Its Usual Condition

 S 414-033
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU CLOSE THE THRUST REVERSER, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the right thrust reverser (AMM 78-31-00/201).

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

 (3)  
Close the right fan cowl panel (AMM 71-11-04/201).

 S 414-034
 S 414-035
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 36-12-04
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 444-036
 (4)  
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).

 S 864-026

 (5)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 36-12-04-004-060
 4.  Remove the Air Filter for the Fan Air Modulating Valve (Fig. 401)______________________________________________________
 A. References
 (1)  
AMM 54-61-00/001, Fairings - Description and Operation

 (2)  
AMM 71-11-04/201, Fan Cowl Panels

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

 B. Access
 (1)  
Location Zone - Method 1 412 Engine 1 - Compressor Case 12:00 o'clock 422 Engine 2 - Compressor Case 12:00 o'clock 432 Engine 3 - Compressor Case 12:00 o'clock 442 Engine 4 - Compressor Case 12:00 o'clock

 (2)  
Location Zone - Method 2
 452 Torque Box - No. 1 Strut
 462 Torque Box - No. 2 Strut
 472 Torque Box - No. 3 Strut
 482 Torque Box - No. 4 Strut

 (3)  
Access Panel - Method 1
 416 Right Thrust Reverser Half - Engine 1
 426 Right Thrust Reverser Half - Engine 2
 436 Right Thrust Reverser Half - Engine 3
 446 Right Thrust Reverser Half - Engine 4

 (4)  
Access Panel - Method 2 452LR Right Forward Core Cowl Skirt Fairing - Engine 1 462LR Right Forward Core Cowl Skirt Fairing - Engine 2 472LR Right Forward Core Cowl Skirt Fairing - Engine 3 482LR Right Forward Core Cowl Skirt Fairing - Engine 4

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 C.

D.
E.
A
747-400 MAINTENANCE MANUALPrepare for Removal - Method 1. S 044-041
 WARNING:_______ DO THE DEACTIVATION PROCEDURE FOR THE THRUST REVERSER TO
 PREVENT THE OPERATION OF THE THRUST REVERSER.  ACCIDENTAL
 OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS

 OR DAMAGE TO EQUIPMENT.
 (1)  
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).

 S 014-042

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

 S 014-043
 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU OPEN THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (3) Open the right thrust reverser (AMM 78-31-00/201).Preparation for Removal - Method 2.
 S 044-044
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE THRUST REVERSER TO
_______ PREVENT THE OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  
Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).

 S 014-045

 (2)
Remove the right core cowl skirt fairing (AMM 54-61-00/001).Air Filter Removal

 S 034-046

 (1)  
Remove the plug (40) and packing (41).

 (a)  
Discard the packing (41).

 S 024-047
 (2)  
Remove the spring (42) and air filter (43) from the modulating valve.
　
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