(7)  
G02332 Ferrule - P05-292 (Optional)

 (8)  
G02335 Cable - Safety - P05-291 (Optional)

 C.
Access

 (1)  
Location Zone
 412 Engine 1 - Intermediate Case Aft Face 7 o'clock
 422 Engine 2 - Intermediate Case Aft Face 7 o'clock
 432 Engine 3 - Intermediate Case Aft Face 7 o'clock
 442 Engine 4 - Intermediate Case Aft Face 7 o'clock

 (2)  
Access Panel
 415 Left Thrust Reverser Half - Engine 1
 425 Left Thrust Reverser Half - Engine 2
 435 Left Thrust Reverser Half - Engine 3
 445 Left Thrust Reverser Half - Engine 4

 D.
Procedure

 S 825-075-N00
 (1)  Adjust the actuator for the 2.5 bleed valve:
 CAUTION:_______TURN THE SHOULDER BOLT CLOCKWISE TO LOOSEN. THE SHOULDER BOLT HAS LEFT HAND THREADS. DAMAGE CAN OCCUR TO THE SHOULDER BOLT OR THE ACTUATOR IF THE SHOULDER BOLT IS TURNED IN THE INCORRECT DIRECTION. ALSO, HOLD THE HEXAGONAL HEAD OF THE ACTUATOR PISTON SHAFT WHEN YOU LOOSEN THE SHOULDER BOLT.
 CAUTION: MAKE SURE THE CRIMPED LOCKING CUP AND RETAINING NUT DO NOT
_______ LOOSEN FROM THE PISTON SHAFT WHEN THE SHOULDER BOLT IS REMOVED. IF THIS OCCURS, DAMAGE TO THE 2.5 BLEED VALVE ACTUATOR OR THE ENGINE CAN OCCUR.
 (a)  If necessary, remove the cotter pin and the shoulder bolt from the actuator piston shaft.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-32-01
 ALL  ú ú N01 Page 518 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
CAUTION:_______ MAKE SURE THE CRIMPED LOCKING CUP AND THE RETAINING NUT DO
 NOT LOOSEN FROM THE PISTON SHAFT WHEN THE PISTON HEX HEAD
 IS TURNED.  IF THE RETAINING NUT CHANGES OR LOOSENS, THE
 INTERNAL ADJUSTMENT OF THE 2.5 BLEED VALVE ACTUATOR CAN
 CHANGE AND DAMAGE TO THE ACTUATOR OR THE ENGINE CAN OCCUR.
 CAUTION:_______ DO NOT USE TOO MUCH FORCE WHEN YOU TURN THE PISTON SHAFT.

 TOO MUCH FORCE CAN CAUSE INTERNAL DAMAGE TO THE ACTUATOR.
 (b)  Use a speed handle wrench to turn the piston shaft clockwise until the shaft does not turn.
 NOTE: When the piston shaft is turned clockwise, the shaft
____ will extend forward.
 (c)  
Turn the piston shaft counterclockwise four turns.

 (d)  
Lubricate the threads of the shoulder bolt with engine oil.

 CAUTION:_______TURN THE SHOULDER BOLT COUNTERCLOCKWISE TO INSTALL. THE SHOULDER BOLT HAS LEFT HAND THREADS. DAMAGE CAN OCCUR TO THE SHOULDER BOLT OR THE ACTUATOR IF THE SHOULDER BOLT IS TURNED IN THE INCORRECT DIRECTION. ALSO, HOLD THE HEXAGONAL HEAD OF THE ACTUATOR PISTON SHAFT WHEN YOU TIGHTEN THE SHOULDER BOLT.

 (e)  
Install the shoulder bolt to the piston shaft. NOTE: Hold the hexagonal head of the piston shaft during the

____ installation of the shoulder bolt.

 (f)  
Tighten the shoulder bolt to 50-70 pound-inches (5.6-7.9 newton-meters).

 NOTE: The shoulder bolt can be turned up to 30 degrees more to
____ install the cotter pin. After the added turn, the torque can be larger than the limits above.
 1)  Install the cotter pin.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 75-32-01
 ALL  ú ú N01 Page 519 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
WARNING: DO NOT GET THE METHYL ETHYL KETONE (MEK) IN YOUR MOUTH, OR
_______ EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE MEK. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES WHEN YOU USE THE MEK. KEEP THE MEK AWAY FROM SPARKS, FLAME, AND HEAT. MEK IS A POISONOUS AND FLAMMABLE SOLVENT WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (g)  Clean the two ends of the cotter pin on the shoulder bolt with a clean cheesecloth made moist with the solvent. 1) Let the shoulder bolt and the cotter pin dry.
 CAUTION: MAKE SURE THERE IS NO SOLVENT ON THE SHOULDER BOLT BEFORE
_______ YOU APPLY THE SEALANT. YOU CAN RUB THE SOLVENT DRY OR YOU CAN DRY THE SOLVENT WITH AIR AT AMBIENT TEMPERATURE. IF YOU DO NOT DO THIS, THE SOLVENT CAN CAUSE DAMAGE TO THE SEALANT.
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 大氣 AIR 2(69)