(a)
Apply sealant to all surfaces and countersinks below the fastener head.
(b)
Install the fastener.
S 102-088-B00
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A 737-300/400/500MAINTENANCE MANUAL
FAIRING SEAL AT METAL SEAL COVER
FILLET AFTER INSTALLATION
YOU CAN APPLY THE SEALANT TO THE HOLE OR THE FASTENER
Fastener Seal
Figure 204 (Sheet 1)
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A 737-300/400/500MAINTENANCE MANUAL
METAL EXTRUDED SEAL COVER
SEALING OF
STANDARD GROUND STUD
Fastener Seal
Figure 204 (Sheet 2)
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M27629
A
737-300/400/500
MAINTENANCE MANUAL
PROTRUDING HEAD FASTENER COUNTERSUNK FASTENER
PROCEDURE 2
TYPICAL FASTENER SEALING FOR CORROSION PROTECTION
Fastener Seal
Figure 204 (Sheet 3)
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M27705
A
737-300/400/500MAINTENANCE MANUAL
CLASS A (BRUSHABLE) IF USED,
D
MAY COVER THE FASTENER HEAD
D B D
B
D D DBD
W
W
W
RIVET HEAD
BOLT LESS THAN
AND BUTTON
1/2-INCH DIA
D BOLT 1/2-INCH
B
OR LARGER DIA
A
B
C
B
D B D W
W
HEX DRIVE (HI-LOCK)/BOLT/LOCKBOLT HEX DRIVE (HI-LOCK) COLLAR
LESS THAN 3/8-INCH DIA 1/2-INCH AND LARGER DIA BOLT 2
D
E
B
D
B
B
D B
B
W
D
W W
HEX DRIVE (HI-LOCK)/ BOLT/LOCKBOLT LOCK BOLT HEX DRIVE (HI-LOCK) COLLAR 3/8-INCH OR LARGER DIA COLLAR LESS THAN 1/2-INCH DIA BOLT 2
F GH
2 RECESSED AREA IN END OF HEX DRIVE PIN NEED NOT BE FILLED WITH SEALANT 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 204 (Sheet 4)
M27706
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A
737-300/400/500MAINTENANCE MANUAL
(c)
A continous extrusion of sealant is necessary around the fastener.
(d)
Clean off unwanted sealant.
S 392-090-B00
(3) Procedure 2 - corrosion protection below the head area and shank of the fastner:
(a) Apply selant to the entire shank and thread of the fastener.
NOTE: Apply sealant to the shank only for fasteners which will
____
use self-sealing nuts or collars.
(b)
Install the fastener and nut or collar.
(c)
Clean off unwanted sealant.
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