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(2)
B00065 Alcohol - denatured
(3)
Use the materials that follow for the bonded patch with screws repair procedure:
(a)
A00016 Adhesive - Film, BMS 5-91, Type I, II, or III
(b)
G02163 Liner - Glass Fiber - Reinforced Phenolic Laminate, BMS 8-223 Grade B
(c)
G01338 Tape - 3M 367-FR (3 inches wide)
(d)
Screws - Steel Sheet Metal, 0.164 inch diameter (U.S. size No. 8) X 3/16 inch long (commercially available)
(4)
Use the materials that follow for the Thermion Repair System:
(a)
Patch Kits - Thermion Heat Resistant, P/N 9290-1 thru -7 Supplier: Thermion Inc.
(b)
A01016 Epoxy - Master Bond high Temperature, EP65HT-1
(5)
Use the material that follow for the Akro Fireguard System:
(a) Speed patch - self-adhesive, P/N AF844, AF848, or AF888, Supplier: Akro Fireguard Products, Inc.
D. References
(1)
AMM 25-50-01/401, Cargo Compartment Ceiling Lining
(2)
AMM 25-50-02/401, Cargo Compartment Sidewall Lining
(3)
AMM 25-50-03/401, Cargo Compartment Bulkhead Lining
E. Access
(1) Location Zones
121/122 Forward Cargo Compartment
153/154 Aft Cargo Compartment
F. Procedure - Repair the Cargo Liners with Screws and a Bonded Patch
S 348-029
(1) Make a fiberglass patch with the same thickness as the liner being repaired.
NOTE: The patch should make a minimum of a 2-inch overlap on
____ the area that is not damaged. For example, the patch dimension that is necessary for a 1.5-inch diameter hole would be 5.5-inch diameter.
S 128-030
(2) Rub the back of the patch with abrasive paper.
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S 168-032
(3) Clean all of the surfaces using denatured alcohol to remove the
loose particles.
S 348-033
(4) Apply adhesive to the back of the patch.
S 348-034
(5) Put the patch over the center of the damaged area.
S 348-035
(6) Apply pressure to the patch to make sure there is a good bond.
S 348-036
(7) Attach the patch permanently with screws at approximately 1.25
inches apart and 0.50 inch from the edges of the patch.
NOTE:____ Make sure you put the screws apart such that the screws do
not interfere with underlying structure.
S 348-037
(8) Apply the tape on the heads of the screws to keep them installed through the fiberglass liner and patch.
S 438-074
WARNING:_______SEAL THE CARGO COMPARTMENT WITH THE LINERS. OBEY THE INSTRUCTIONS IN THE SPECIFIED PROCEDURE WHEN YOU INSTALL THE LINERS. IF YOU INSTALL THE LINERS INCORRECTLY, THE FIRE EXTINGUISHING AGENT OR SMOKE CAN GET INTO THE PASSENGER COMPARTMENT DURING A FIRE.
(9) Install the cargo liner if you removed it to do the repair (AMM 25-50-01/401, AMM 25-50-02/401, or AMM 25-50-03/401).
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G. Procedure - The Thermion Repair System
S 348-038
(1) Get the correct Thermion patch kit for the shape of the damage.
NOTE: The patch should make a minimum of a 2-inch overlap on
____ the area that is not damaged. For example, the patch dimension that is necessary for a 1.5-inch diameter hole would be 5.5-inch diameter.
S 128-039
(2)
Rub the back of the patch with abrasive paper to remove the gloss being careful not to rub the impregnated scrim area.
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