(a)  
Activate the Isolation Valve for the Thrust Reverser

 (b)  
Activate the Thrust Reverser Sleeves

 B.
References

 (1)  
AMM 54-62-04/401, Strut Fairings

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

 C.
Access

 (1)  
Location Zone
 450 Strut 1
 460 Strut 2
 470 Strut 3
 480 Strut 4

 (2)  
Access Panel
 451 Engine 1 - Forward Fairing of Strut
 461 Engine 2 - Forward Fairing of Strut
 471 Engine 3 - Forward Fairing of Strut
 481 Engine 4 - Forward Fairing of Strut

 D.
Activate the Isolation Valve for the Thrust Reverser

 S 012-122-N00
 (1)  If it is necessary, open the access door for the stow valve on the applicable strut hydraulic bay (AMM 54-62-04/401).
 S 442-123-N00
 WARNING: BEFORE YOU ACTIVATE THE STOW VALVE, MAKE SURE THE POSITION OF
_______ THE REVERSE THRUST LEVER (DEPLOYED OR STOWED) AGREES WITH THE POSITION OF THE THRUST REVERSER (EXTENDED OR RETRACTED). IF YOU DO NOT OBEY THIS INSTRUCTION, THE THRUST REVERSER CAN RETRACT OR EXTEND QUICKLY WHEN YOU ACTIVATE THE STOW VALVE. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Do these steps to activate the isolation valve:
 (a)  
Remove the hitch pin from the streamer pin.

 (b)  
Remove the streamered pin from the deactivation slide of the isolation valve.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 442-124-N00
 (3)  Do these steps if you opened the bypass valve lever:
 (a)  
Remove the hitch pin from the streamered pin on the bypass valve lever.

 (b)  
Remove the streamer pin from the bypass valve lever.

 S 412-125-N00
 (4)  
Close the access door for the isolation valve.

 S 862-126-N00

 (5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  P6 Main Power Supply Panel
 1) 6F11 T/R LOCK CONT ENG 1
 2) 6E11 T/R LOCK CONT ENG 2
 3) 6D11 T/R LOCK CONT ENG 3
 4) 6C11 T/R LOCK CONT ENG 4
 5) 6F12 T/R IND ENG 1
 6) 6E12 T/R IND ENG 2
 7) 6D12 T/R IND ENG 3
 8) 6C12 T/R IND ENG 4
 9) 6F13 T/R CONT ENG 1
 10) 6E13 T/R CONT ENG 2
 11) 6D13 T/R CONT ENG 3
 12) 6C13 T/R CONT ENG 4

 E.
Activate the Thrust Reverser Sleeves (Fig. 208)

 S 442-127-N00
 WARNING: BEFORE YOU ACTIVATE THE THRUST REVERSER SLEEVES, MAKE SURE THE
_______ POSITION OF THE REVERSE THRUST LEVER (DEPLOYED OR STOWED) AGREES WITH THE POSITION OF THE THRUST REVERSER (EXTENDED OR RETRACTED). IF YOU DO NOT OBEY THIS INSTRUCTION, THE THRUST REVERSER CAN RETRACT OR EXTEND QUICKLY WHEN YOU ACTIVATE THE THRUST REVERSER SLEEVES. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  Do steps to activate the thrust reverser sleeves:
 (a)  
Remove the sleeve deactivation pin (with the REMOVE-BEFORE-FLIGHT streamer) from the thrust reverser sleeve.

 (b)  
Wind the REMOVE-BEFORE-FLIGHT streamer on the sleeve deactivation pin and install the streamer clip.

 (c)  
Remove the screw plug from the tube support structure on the torque box of the thrust reverser.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú N01 Page 246 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(d)  
Install the screw plug in the hole in the outer surface of the thrust reverser sleeve (where the sleeve deactivation pin with the REMOVE-BEFORE-FLIGHT streamer was before you removed it). 1) Tighten the plug to 120-150 pound-inches (13.6-17.0
　
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