S 012-383
(3)
Open the left and right core cowl panels (AMM 71-11-06/201).
S 012-384
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(4) Open the left and right thrust reversers (AMM 78-31-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-53-00
ALL ú ú 01N Page 267 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 042-385
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Do this task: "Extended Leading Edge Flaps Deactivation and Safety Locks Installation" (AMM 27-81-00/201).
S 862-386
(6)
Level the airplane to a minimum of one-half degree
(AMM 08-00-00/201).
S 012-032
(7)
Open access doors 452AL/462AL/472AL/482AL (AMM 54-62-00/201), for the applicable strut.
S 012-033
(8)
Open the trailing edge fairing doors (AMM 54-62-00/201).
S 012-034
(9)
Remove the No. 3 forward fairing.
S 012-387
(10)
Open the upper wing leading edge cover.
E. Clean the Strut Drains.
S 032-035
(1)
ON STRUT DRAINS WITH SCREENS; You must disconnect the drain tube from the applicable screen before you apply the air, and connect the drain tube to the screen when this task is complete (AMM 20-11-05/401).
S 162-037
(2)
Clean the forward drains:
(a) Apply air pressure to the strut drain line exit at the drain mast (NSTA 156).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-53-00
ALL ú ú 01N Page 268 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(b)
Clean the center strut drain inlet (NSTA 156) and raceway drain inlet (NSTA 167) in sequence. 1) Block one inlet with a plug while you cover the other inlet
with a rag to collect the unwanted materials.
(c)
Make sure the the air comes out of the drain inlets freely.
(d)
Remove the air pressure from the drain line exit.
(e)
Remove the plugs, rags, and unwanted materials from the drain inlets.
S 162-038
(3) Clean the aft condensate drains:
(a)
Apply air pressure to the aft lower dry bay condensate drains (NSTA 248, right and left sides).
(b)
Clean the condensate drain inlets (right and left sides).
1) Cover the inlets with a rag to collect the unwanted materials.
(c)
Make sure the air comes out of the condensate drain inlets freely.
(d)
Remove the air pressure from the condensate drains.
(e)
Remove the rags and unwanted materials from the drain inlets.
S 162-039
(4) On the inboard struts, clean the aft drains:
(a)
Apply air pressure to the strut drain line exit on the aft edge of the lower pan assembly (NSTA 331). 1) Cover the midspar drain inlet (NSTA 244) with a rag to
collect the unwanted materials.
(b)
Make sure that air comes out freely from the drain inlet.
(c)
Remove the air pressure from the drain line exit.
(d)
Remove the rag and unwanted materials from the drain inlet.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 NACELLES/PYLONS(83)
