(2)
Repair of the moisture seal for the No. 1 window (windshield).
(3)
Repair of the cushion seal for the No. 1 window (windshield).
TASK 56-11-00-308-001
2. Repair the Aerodynamic Smoother for the Flight Compartment Windows (Fig. 801)__________________________________________________________________
A. Standard Tools and Equipment
(1)
Spatula
(2)
Flow Gun
B. Consumable Materials
(1)
G00294 Tape - Masking, Permacel No. 76
(2)
B00083 Solvent - Aliphatic Naphtha, TT-N-95
(3)
A00474 Sealant - Aerodynamic Smoother, Silicone, Dow Corning DC 93-006
(4)
A00055 Primer - Silicone, RTV 1200, S-2260 Dow Corning Corporation
(5)
G00033 Cheesecloth - Woven, Surewipe, (clean and lint-free)
C. Prepare for the Repair of the Aerodynamic Smoother.
S 868-002
WARNING: OPEN THE CIRCUIT BREAKERS AND TURN OFF THE WINDOW HEAT SWITCHES
_______ BEFORE YOU DO WORK ON THE FLIGHT COMPARTMENT WINDOWS. A FAILURE TO OPEN THE CIRCUIT BREAKERS AND TURN OFF THE WINDOW HEAT SWITCHES CAN CAUSE AN ELECTRICAL SHOCK TO PERSONS.
(1)
Put the window heat switches in the OFF position.
S 868-003
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel
1) 6B17 WINDOW HEAT 1R
2) 6B34 WINDOW HEAT 1L
3) 6E28 WINDOW HEAT 2L & 3R PWR
4) 6E30 WINDOW HEAT 2R & 3L PWR
(b)
P180 DC Power Distribution Panel
1) 180H12 WDO HEAT CONT 1R
2) 180H26 WDO HEAT CONT 1L
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
Aerodynamic Smoother Repair
Figure 801
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 148-004
(3) Remove the loose or cracked aerodynamic smoother.
S 118-005
WARNING:_______BE VERY CAREFUL WHEN YOU USE ALIPHATIC NAPHTHA. ALIPHATIC NAPHTHA IS FLAMMABLE. IF YOU INCORRECTLY USE THE ALIPHATIC NAPHTHA, INJURY OR DAMAGE CAN OCCUR.
CAUTION: DO NOT LET THE SOLVENTS TOUCH PLASTICS, CONTROL CABLES,
_______ LUBRICATED AREAS, DECALS, OR PAINTS. IF THE SOLVENTS TOUCH THESE AREAS, DAMAGE CAN OCCUR.
(4) Clean the distance between the window frame and the window with aliphatic naphtha.
NOTE: Use a clean cheesecloth to apply the aliphatic naphtha
____ and a clean cloth to rub it off. Do not let it dry on the surfaces.
S 118-032
(5) Clean this distance again until the surfaces are free of the remaining film.
NOTE: You must be careful not to cause damage to the adjacent seal.
____
D. Repair the Aerodynamic Smoother.
S 958-006
(1) Put the tape around the areas adjacent to the aerodynamic smoother.
(a)
Put the tape above the clearance between the window and frame to prevent contamination before you fill it with the nylon cord (Fig. 801).
(b)
Remove the tape that is immediately above this clearance with a sharp knife.
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56-11-00 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 WINDOWS 窗户/风挡(4)
