(3)
Solvents
(a)
B00083 Aliphatic Naphtha, TT-N-95
(b)
B00148 Methyl Ethyl Ketone (MEK), TT-M-261
(c)
B00154 Toluene (Toluol) - JAN-T-171, Grade A
(4)
G00450 Fabric - Flow-Resistant, BMS 8-64
(5)
Laminate - Decorative Tedlar (perforated or
non-perforated), BMS 8-98
(6)
Finish, Silk Screen Ink - BMS 10-73,
(a)
C00367 Type I
(b)
C00368 Type II
(7)
B00168 Paper - Abrasive, 240-400 grit
(8)
Plexiglass - 1/4 thick (commercially available)
(9)
Tape
(a)
G00123 Double-backed, 2 inches wide -Permacel No. 94
(b)
G00147 Masking, 1 or 2 inches wide -Permacel No. 718
(c)
G02480 Mylar - Permacel No. P-255
D. Access
(1) Location Zone
200 Upper Half of the Fuselage
E. Repair Perforated Panels
S 498-062
(1) Put a routing template, with a hole diameter larger than the damaged area, over the area with damage.
NOTE: Hold the template in position with double-backed tape.
____
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(2) S 348-104Remove the damaged area with a router. Make sure the depth of the the router does not cause damage to the screen under the decorative layer.
NOTE:____ For panels with tedlar covers, put one or two layers of Mylar tape over the damaged area and the perforated decorative sheet. This will help prevent damage to the tedlar.
(3) S 348-105Remove the flow-resistant fabric.
(4) S 348-063Mix the adhesive as follows: (a) Mix (by weight) 60 to 65 parts of Furane Hardener 9812 with 100 parts of Epibond 126.
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 HAZARDOUS TO THE ENVIRONMENT. 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.
(5) S 348-065Cut a piece of flow-resistant fabric that is larger than the damaged area.
(6) S 348-106Bond the flow-resistant fabric to a piece of perforated decorative sheet with the adhesive mixture.
(7) S 348-067Use a routing template and route out a patch from the perforated sheet you made in the previous step.
(8) S 348-144Rub 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.
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MAINTENANCE MANUAL
S 958-069
(9)
Apply masking tape to the decorative side of the patch and around the cutout area.
S 118-070
(10)
Clean the surfaces with a cheesecloth that is moist with aliphatic naphtha.
S 348-071
(11)
Apply a heavy layer of the mixed adhesive on the surfaces of the patch and the cutout.
S 348-145
(12)
Let the adhesive dry for 10 minutes.
S 348-109
(13)
Remove the masking tape from the patch and panel.
S 348-110
(14)
Apply the double-backed tape to the decorative side of the patch and to the area around the cutout. The patch marks you made must be shown.
S 348-111
(15)
Put the patch on a 6- by 6-inch-thick or a 8- by 8 1/4-inch-thick piece of plexiglass.
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