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25-14-01
ALL ú ú 02 Page 405 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
FIRE BLOCKING MATERIAL
C
C
I
FWD FIRE BLOCKING MATERIAL
C-C
Flight Compartment Dripshield Installation Figure 401 (Sheet 5)
M26650
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25-14-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 024-063
(2)
Remove the pilot's seat (AMM 25-11-01/401).
S 024-064
(3)
Remove the observer's seat (AMM 25-11-03/401).
S 014-003
(4)
Remove the pilots' sunvisor assemblies from the ceiling panels (AMM 25-13-03/401).
S 014-018
(5)
Remove the pilots' crash pads from the upper sills on the ceiling panels (AMM 25-15-02/401).
S 024-065
(6)
Remove the upper deck lavatory if it is necessary
(AMM 25-40-03/401).
S 014-004
(7)
Remove the pilots' overhead electrical panels (AMM 31-12-11/001 and AMM 31-12-16/001).
S 024-066
(8)
Loosen or remove the pitot static tubing (AMM 34-11-01/401).
S 024-067
(9)
Loosen or remove the oxygen tubing (AMM 35-11-00/001).
S 014-005
(10)
Remove the ceiling and sidewall panels to get access to the dripshields.
E. Remove the dripshields.
S 034-019
(1)
Disconnect the plastic drain tubes installed in the dripshields.
(2)
Remove the electrical wire bundles from the dripshields.
S 034-021
(3)
Remove the support brackets for the ceiling and sidewall linings from the dripshields.
(4)
Remove the screws which attach the dripshields to the structure.
(5)
Remove the sealant around the edges of the dripshields.
S 034-020
S 034-022
S 154-025
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 114-027
WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR
_______ SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(6)
Apply solvent, Series 98 (SOPM 20-30-98) to the joints of the dripshields in order to loosen the bond of the joint.
S 024-024
(7)
Open the joints between the dripshields.
S 024-019
(8)
Remove the dripshields from the structure.
NOTE: Take notice of how each dripshield overlaps the others.
____
TASK 25-14-01-424-062
3. Install the Fire Blocking Material__________________________________
A. Consumable Materials
(1)
A00160 Sealant - BMS5-63, Type 2
(2)
G02361 Sealing Tape - BMS5-146, Type 1
(3)
A00000 Foam, Silicone, Grade A - BMS1-68
(4)
G50018 Fabric - Cargo Liner, Type 1 BMS8-343
B. Access
(1) Location Zones
221 Control Cabin, Left
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