S 348-119
(4)
Mix the adhesive as follows:
(a) Mix (by weight) 60 to 65 parts of Furane Hardener 9812 with 100 parts of Epibond 126.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-00-00
ALL ú ú 01 Page 827 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
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. REFER TO PRODUCT
MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS
FOR PROPER HANDLING PROCEDURES.
(b) Mix (by volume) one part of adhesive mixture with one part of MEK and one part of toluene.
S 348-120
(5)
Cut a piece of flow-resistant fabric that is larger than the damaged area.
S 348-121
(6)
Bond the flow-resistant fabric to a piece of perforated decorative sheet with the adhesive mixture.
S 348-122
(7)
Use a routing template and route out a patch from the perforated sheet you made in the previous step.
S 348-123
(8)
Rub the patch with abrasive paper to make sure the patch fits correctly in the cutout.
NOTE: Make two marks on the patch and on the adjacent
____ surface. This will help you install the patch in the position that it has the best fit.
S 958-124
(9)
Apply masking tape to the decorative side of the patch and around the cutout area.
S 348-125
(10)
Clean the surfaces with a cheesecloth that is moist with aliphatic naphtha.
S 348-126
(11)
Apply a heavy layer of the mixed adhesive on the surfaces of the patch and the cutout.
(12)
Let the adhesive dry for 10 minutes.
(13)
Remove the masking tape from the patch and panel.
S 348-127
S 348-128
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-00-00
ALL ú ú 01 Page 828 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 348-129
(14) Apply the double-backed tape to the decorative side of the patch and to the area around the cutout.
NOTE: The patch marks you made must be shown.
____
S 348-130
(15) Put the patch on a 6- by 6-inch-thick or a 8- by 8 1/4-inch-thick piece of plexiglass.
NOTE: Put the flow-resistant fabric between the patch and the
____
fiberglass screen.
S 348-131
(16) Put the patch into the cutout.
NOTE: Look through the plexiglass to align the marks that you made.
____
S 348-132
(17)
Apply pressure to the plexiglass, as necessary, to make sure the patch is level with the adjacent surfaces.
S 348-133
(18)
Let the patch cure for 24 hours at room temperature, or for 3 hours at 120 (|5)°F.
S 348-134
(19)
Put the filler in all the cracks that you can see.
S 348-135
(20)
Let the filler cure.
S 348-136
(21)
Apply masking tape to the area around the repair.
S 348-137
(22)
Rub the filler with 240-320 grit abrasive paper until it is smooth and level with the adjacent surfaces.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 1(24)
