S 414-056-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (2)  
Close the right thrust reverser (AMM 78-31-00/201).

 S 414-051-N00

 (3)  
Close the right core cowl panel (AMM 71-11-06/201).

 S 414-052-N00

 (4)  
Close the right fan cowl panel (AMM 71-11-04/201).

 S 444-053-N00

 (5)  
Do the activation procedure for the thrust reversers
 (AMM 78-31-00/201).

 S 864-032-N00

 (6)  
For the applicable engine, remove the DO-NOT-CLOSE tags and close these circuit breakers that follow:

 (a)  P6 Main Power Distribution Panel
 1) 6G1 FUEL SHUTOFF VALVE ENG 1
 2) 6G15 SCU ALT PWR ENG 1
 3) 6G23 ENG SCU 1
 4) 6G2 FUEL SHUTOFF VALVE ENG 2
 5) 6G16 SCU ALT PWR ENG 2
 6) 6G24 ENG SCU 2
 7) 6G3 FUEL SHUTOFF VALVE ENG 3
 8) 6G17 SCU ALT PWR ENG 3

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 75-32-04
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
9) 6G25 ENG SCU 3
 10) 6G4 FUEL SHUTOFF VALVE ENG 4
 11) 6G18 SCU ALT PWR ENG 4
 12) 6G26 ENG SCU 4

 S 714-033-N00
 (7)  Do the test of the 2.9 bleed valve solenoid that is shown in the Power Plant Test Reference Table (AMM 71-00-00/501).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
STABILITY BLEED PNEUMATIC RELAY VALVE - REMOVAL/INSTALLATION
____________________________________________________________
 1.  General
_______
 A.  This procedure gives the instructions to remove and install the stability bleed pneumatic relay valve.
 B.  The stability bleed pneumatic relay valve is referred to as the relay valve in this procedure.
 C.  The relay valve is installed on the aft face of the intermediate case at the 5 o'clock position.
 D.  You can get access to the relay valve through the right thrust reverser.
 TASK 75-32-05-004-001-N00
 2.  Remove the Stability Bleed Pneumatic Relay Valve
________________________________________________
 A.  References
 (1)  
AMM 75-32-04/401, 2.9 Bleed Valve Solenoid

 B.  
Access

 (1)  
Location Zone 412 Engine 1 - Intermediate Case Aft Face 5 o'clock 422 Engine 2 - Intermediate case Aft Face 5 o'clock 432 Engine 3 - Intermediate Case Aft Face 5 o'clock 442 Engine 4 - Intermediate Case Aft Face 5 o'clock

 (2)  
Access Panel
 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

 C.  
Procedure (Fig. 401)

 (1)
Remove the solenoid for the 2.9 bleed valve (AMM 75-32-04/401).

 S 024-021-N00

 (2)  
Remove the relay valve:

 S 014-003-N00
 (a)  Remove the three bolts and nuts which attach the relay valve to the bracket.
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 75-32-05
 ALL  ú ú N01 Page 401 ú Jun 15/98
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
STABILITY BLEED PNEUMATIC RELAY VALVE
BOLT (4 LOCATIONS)
BOLT AND
NUT
BRACKET
　
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