C. Prepare to install the fire blocking.
S 024-029
(1) Remove the applicable flight deck furnishings.
D. Install the forward edge left and right dripshield fire blocking,
S 164-030
(1)
Clean the dripshield.
(2)
Cut the fire blocking material to it's appropriate size.
S 834-031
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S 834-032
(3) Wrap the fire block material around the dripshield and insulation so that it overlaps the dripshield at least one inch.
NOTE: The material should extend at least 4 inches between the
____ insulation on the structure and the insulation on the dripshield.
S 394-038
(4) Apply sealant to bond the material to the dripshield
(SOPM 20-50-19).
NOTE: Sealing tape, BMS 5-146, may be used to hold the fire
____ blocking material in place while the sealant cures. It may be left in place permanently. It cannot be used instead of the sealant.
S 834-034
(5)
Cut a strip of silicone foam to approximately 1 inch square and approximately 36 inches long.
S 834-035
(6)
Wrap glass fabric one and a half times around the foam strip.
NOTE: The end of the glass fabric should extend past the end of
____
the foam strip approximately one inch.
S 834-036
(7)
Insert the foam roll between the material and the structure
insulation. Trim to fit.
S 394-037
(8)
Apply BMS5-63 sealant to tack the foam roll to the fire blocking material.
E. Install the aft edge dripshield fire blocking,
S 834-039
(1)
Clean the dripshield.
(2)
Cut the fire blocking material to it's appropriate size.
S 834-040
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S 834-041
(3) Wrap the fire block material around the dripshield and insulation so that it overlaps the dripshield at least one inch.
NOTE: The material should extend at least 4 inches between the
____ insulation on the structure and the insulation on the dripshield.
S 394-042
(4) Apply BMS5-63 sealant to bond the material to the dripshield (SOPM 20-50-19).
NOTE: Sealing tape, BMS 5-146, may be used to hold the fire
____ blocking material in place while the sealant cures. It may be left in place permanently. It cannot be used instead of the sealant.
S 834-043
(5)
Cut a strip of silicone foam to approximately 1 inch square and approximately 36 inches long.
S 834-044
(6)
Wrap glass fabric one and a half times around the foam strip.
NOTE: The end of the glass fabric should extend past the end of
____
the foam strip approximately one inch.
S 834-047
(7)
Apply BMS5-146 tape in 2 inch strips to hold the material in place during installation.
S 834-045
(8)
Insert the foam roll between the material and the structure insulation. Trim to fit.
S 394-046
(9)
Apply BMS5-63 sealant to tack the foam roll to the fire blocking material.
(10)
Remove the retainer caps from the insulation studs.
S 024-048
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本文链接地址：747-400 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 1(49)
