WARNING:_______DO NOT BREATH THE ASBESTOS DUST. PUT ON A PROTECTIVE RESPIRATOR WHEN YOU DRILL THE LAVATORY PANELS. THE ASBESTOS DUST CAN GET IN YOUR MOUTH OR NOSE IF YOU DO NOT USE THE PROTECTIVE RESPIRATOR AND CAN CAUSE CANCER OR LUNG DISEASE.
(2)
Obey this WARNING during all of this task.
B. Equipment
(1)
Bore - Cork
(2)
Squeegee - Commercially available
C. Consumable Materials
(1)
Adhesives
(a)
A00028 EC 2216 A/B
(b)
A00188 BMS 5-105, Type I or II
(c)
A00216 BMS 5-28, Epocast 1618 A/B
(2)
G00111 Film - Mylar
(3)
D00506 Lubricant - Light Machine Oil
(4)
G00123 Tape - Double-backed, 2-inches wide,
Permacel No. 94
D. Access
(1) Location Zone
200 Upper Half of the Fuselage
E. Repair the Foam with a Plug
S 358-168
(1) Remove the damage with a cork bore or an equivalent tool.
NOTE: The tool size must be equal to the size of the damaged
____ area, or up to a 1/2-inch larger in diameter.
S 358-169
(2)
Use the same tool to cut a repair plug from foam to fit in damaged area.
S 358-170
(3)
Apply a layer of the BMS 5-105 adhesive to each surface of the repair plug and the damaged area.
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S 358-171
(4) Let the adhesive dry until it is tacky. Then push the repair plug into the damaged area with hand pressure.
NOTE: Do not stress the adhesive bond for 24 hours.
____
F. Repair the Foam with Adhesive Resin
S 358-172
(1) Remove the damage with a cork bore or an equivalent tool.
NOTE: The tool size must be equal to the size of the damaged
____ area, or up to a 1/2-inch larger in diameter.
S 358-173
(2)
Use the manufacturer's instructions to mix the Epocast 1618A/B.
S 358-174
(3)
Fill the area fully with the Epocast (potting compound).
S 358-175
(4)
Put a sheet of mylar film over the potting compound.
NOTE: The mylar film must go approximately 2 inches more than the
____ outer edge of all sides of the filled area.
S 358-176
(5)
Put a small amount of the lubricant on the top surface of the mylar film.
S 358-177
(6)
Start at the center of the repair and rub the potting compound with a squeegee until you get the shape necessary.
(7)
Apply double-backed tape to hold the mylar film in position.
S 358-179
(8)
Let the compound cure for 1 hour at room temperature and then 5 hours at 115°F.
(9)
Carefully remove the mylar film after the compound has cured.
S 358-178
S 358-180
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TASK 25-00-00-308-181
9. Repair of Insulation Blankets and Covers (Fig. 801, 802)________________________________________
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