(2)  
Access Panel
 451A and 451B #2 and #3 Forward Fairing, Engine 1
 461A and 461B #2 and #3 Forward Fairing, Engine 2
 471A and 471B #2 and #3 Forward Fairing, Engine 3
 481A and 481B #2 and #3 Forward Fairing, Engine 4

 E.
Install the Extend Flow Control Tee for the Thrust Reverser (Fig. 401).

 S 644-026-N01
 (1)  
Lubricate the new packing (4) with hydraulic fluid.

 S 424-027-N01

 (2)  
Install the packing (4), retainer (5), and nut (6) on the flow control tee (2).

 S 424-028-N01

 (3)  
Install the flow control tee (2) on the DCV.

 S 424-030-N01

 (4)  
Connect the hydraulic lines (1) for the extend flow control tee (2).

 (5)
Connect the control tube for the baro switch if it was removed.

 (6)  
Tighten the three clamps for the control tube and electrical bundle.

 S 414-031-N01
 S 414-032-N01
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT ONE-WAY RESTRICTOR ú

 78-34-02
 VALVES  ú CONFIG 1 ú N02 Page 406 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 414-029-N01
 (7)  
Install the Retract Flow Control Tee.

 F.
Install the Retract Flow Control Tee for the Thrust Reverser.

 S 644-033-N01
 (1)  
Lubricate the new packing (7) with hydraulic fluid.

 S 424-034-N01

 (2)  
Install the packing (7) on the union (6).

 S 424-050-N01

 (3)  
Install the union (6) to the retract port of the DCV.

 S 424-035-N01

 (4)  
Install the reducer tee (8) to the DCV.

 S 414-051-N01

 (5)  
Install the elbow (9) to the reducer tee (8).

 S 424-036-N01

 (6)  
Connect the tube nuts for the hydraulic lines (11) to the retract flow control tee assembly.

 S 444-037-N01

 (7)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

 S 864-038-N01

 (8)  
Remove the DO-NOT-OPERATE tags from the thrust levers.

 S 714-039-N01

 (9)  
Do this task: Thrust Reverser Operation - Deploy/Stow (Power Method) (AMM 78-31-00/201).

 S 044-040-N01
 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.
 (10) Do the deactivation procedure for the thrust reverser for ground maintenance (AMM 78-31-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT ONE-WAY RESTRICTOR ú

 78-34-02
 VALVES  ú CONFIG 1 ú N02 Page 407 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 794-041-N01
 (11)
 Examine the directional control valve (2) for hydraulic fluid leaks.

 G.
Put the Airplane Back to Its Usual Condition

 S 214-042-N01
 CAUTION: MAKE SURE YOU REMOVE ALL TOOLS AND UNWANTED MATERIAL IN THE
_______ STRUT. IF YOU DO NOT DO THIS, DAMAGE TO THE ENGINE CAN OCCUR.
 (1)  
Make sure you remove all tools and unwanted material from the strut before you install the strut access panel.

 S 414-043-N01

 (2)  
Install the forward fairing panel(s).

 S 444-044-N01

 (3)  
Do the activation procedure for the thrust reverser
 (AMM 78-31-00/201).

 S 444-045-N01

 (4)  
Do the activation procedure for the Speed Brake Control System (AMM 27-62-00/501).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT ONE-WAY RESTRICTOR ú
　
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