(2)
Sealant Removal Tool - made from wood or
plastic 3/16 inch thick, 8 inches long in 1/4,
1/2 and 3/4 inch widths.
(3)
Spatula made of wood or plastic
(4)
Sealing gun and nozzles
C. Fastener Sealing
S 302-071
(1) Do the Prepare for Sealing task.
S 392-072
CAUTION: DO NOT CAUSE A BLOCKAGE WHEN YOU APPLY SEALANT NEAR OR AROUND
_______ THE FUSELAGE DRAIN HOLES, TUBES OR PATHS. THE DRAIN HOLES DRAIN FLUIDS AND CONDENSATION OVERBOARD. IF YOU CAUSE A BLOCKAGE, FLUIDS WILL COLLECT. THE FLUIDS CAN CAUSE CORROSION TO THE STRUCTURE, OR A FIRE IF THE FLUIDS ARE FLAMMABLE.
(2) Use one of these procedures to seal the fasteners that are installed through the mating surface. Use these procedures when the sealant pot life has ended or when no mating surface sealant is used:
(a) Apply the sealant to the fastener or hole at the installation.
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A
747-400
MAINTENANCE MANUAL
FILLET AFTER INSTALLATION FAIRING SEAL AT THE METAL SEAL COVER
YOU CAN APPLY THE SEALANT TO THE HOLE OR THE FASTENER
Fastener Seal
Figure 205 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
METAL EXTRUDED SEAL COVER
SEALING OF
STANDARD GROUND STUD
Fastener Seal
Figure 205 (Sheet 2)
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M26071
A
747-400
MAINTENANCE MANUAL
PROTRUDING HEAD FASTENER COUNTERSUNK FASTENER
PROCEDURE 2
TYPICAL FASTENER SEALING FOR CORROSION PROTECTION
Fastener Seal
Figure 205 (Sheet 3)
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M26075
A
747-400
MAINTENANCE MANUAL
TYPICAL FILLET SEALING DIMENSIONS FOR CORROSION PROTECTION
Fastener Seal
Figure 205 (Sheet 4)
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M26526
A 747-400 MAINTENANCE MANUAL
B
D = 0.02 INCH (0.508 mm) MINIMUM
B = 0.10 INCH (2.54 mm) MINIMUM, EXCEPT 0.20 INCH (5.08 mm) MAXIMUM FOR VIEWS C, D, AND F.
W = 0.10 INCH (2.54 mm) MINIMUM TO 0.20 INCH (5.08 mm) MAXIMUM
TYPICAL FILLET SEALING DIMENSIONS FOR CORROSION PROTECTION
Fastener Seal
Figure 205 (Sheet 5)
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