TM 1-1500-204-23-11
Cartridge, 2 1/2 Ounce, Disposable, Injection Nozzle,
Disposable, Silicon Carbide Abrasive Paper, Wiping
Cloth, 1/2 Inch Surgical Rubber or Plastic Tubing
ZZ-T-831.
(2) Disbond Repair Procedure.
(a) Remove dirt, grease and aircraft luids
from repair area as described in para-
DO NOT use oil or oil based materials
as NDI couplants on advanced composite
components. Use only water or water based
materials. Disbonds may result and loss of
structural integrity may occur.
(b) Deine the extent of the disbond using
NDI according to paragraph 5-2 and the
system speciic technical manual. Lay
out the damage as described in para-
(c) Remove NDI couplant by wiping with
clean, water moistened wiping cloth.
(d) Drill 1/8 inch diameter holes at each
end of the disbond. Minimum spacing
between holes is 1/2 inch. The holes
Figure 7-39. Process Flow Diagram for Disbond
should be through the disbonded skin
Repair
and into the core. Use a drill stop to
ensure proper drill depth.
(1) Facilities, Equipment and Materials. The
(e) Vacuum clean dust and debris from
following equipment and materials are required: Pres-
holes.
sure Regulator, Vacuum Cleaner, HEPA Filter, Drill
Motor, 2000 RPM, Twist or Brad Point Drill, Car-
(f)
Verify that a leak path exists between
bide, 1/8 Inch Diameter, Drill Stop (Common Support
the disbond and the holes drilled using
Equipment), Injection Gun, Metallic Retainer Barrel,
the following procedure (see igure
2 1/2 Ounce, Flash breaker Tape, Adhesive, Liq-
uid (See System Speciic Technical Manual), Injection