(b)
Put the liner segment in the correct position on the case.
(c)
Tighten the screws/bolts with your hand.
(d)
If the spacer is loose, put it in the correct position at the trailing edge.
(e)
Install screws/bolts, threads lubricated with engine oil, in the trailing and axial edges of the liner segments. 1) Tighten the screws/bolts with your hand.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-34-03
ALL ú ú N01 Page 417 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(f) Tighten all the screws/bolts to 36-40 pound-inches (4.067-4.519 newton-meters) in the sequence that follows:
-Front Fasteners.
-Rear Fasteners.
-Axial Fasteners.
1) Visually examine each fastener to make sure that it touches the washer. a) If the screw does not touch the washer, remove it,
apply new lubricant, and install it again.
NOTE: It is not necessary for the fastener to be
____ symmetrically installed in the recess in the liner segment.
S 394-047-N00
(2)
If you installed a liner at the 11 o'clock or 1 o'clock position,
apply sealant to the space adjacent to the bifurcation fairing as
follows (Fig. 403):
(a)
With a piece on clean cheesecloth that is moist with alcohol, clean the areas the sealant will touch.
(b)
Apply the primer to all cleaned surfaces. 1) It is necessary to apply the primer in less than two hours after you cleaned the area.
2) The primer must cure in air at ambient temperature for a minimum of two hours. a) The air must have a minimum relative humidity of 25%.
(c)
Apply sealant as follows: 1) It is necessary to apply the sealant from 2-24 hours after you applied the primer. 2) Use a hot air gun at 175°-225°F (79°-107°C) for 5-7 minutes to dry the sealant.
3) After you use the hot air gun, cure the sealant in air that has a minimum relative humidity of 25%, for eight hours, minimum, before you touch the parts.
G. Put the Airplane Back to Its Usual Condition.
S 414-048-N00
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______
REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Close the thrust reversers (AMM 78-31-00/201).
(2)
Close the core cowl panels (AMM 71-11-06/201).
S 414-049-N00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-34-03
ALL ú ú N01 Page 418 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(3) S 414-050-N00Close the fan cowl panels (AMM 71-11-04/201).
(4) S 444-051-N00Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
72-34-03
ALL ú ú N01 Page 419 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
FAN EXIT LINER SEGMENT (INNER REAR) - INSPECTION/CHECK
______________________________________________________
1. General
_______
A. This procedure gives the task to do the inspection of the (inner rear)
fan exit liner segments. These fan exit liner segments will be referred
to as the liner segments.
B. The eight liner segments are on the inner rear circumference of the
intermediate case, aft of the fan case.
C. You can open each half of the thrust reverser to get access to the liner
segments.
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 发动机 ENGINE 2(53)
