TM 1-1500-204-23-11
breaker tape. Cover repair area with clean
(18) Using the milliohm meter, take electrical
bagging ilm.
resistance measurements between the
replacement expanded foil at the center
(5) Cut a piece of dry expanded foil to size of
of the repair and the adjacent embedded
entire repair area and solvent wipe. To get a
foil. Refer to the system speciic technical
smoother surface in areas of complex cur-
vature, the foil patch may consist of sev-
eral overlapping pieces providing each piece
25 milliohms for copper foil. The replace-
makes contact with the overlap area.
ment foil and adjacent foil may have to
be exposed by sanding in order to make
the measurements. Use the same sand-
ing precautions as called out above. After
(7) Remove bagging ilm from repair area and
the measurement is made, cover over the
apply a thin coat of adhesive to the entire
exposed foil areas with a light coat of adhe-
repair area surface.
(8) Place the repair foil on the repair area and
system speciic technical manual.
apply a thin coat of adhesive to the top sur-
face of the foil.
(19) Apply inish system in accordance with para-
(9) Cut a piece of peel ply to extend past the
manual.
repair area and place on the extended repair
area.
7-13. POST CURE PROCEDURES. The following
are the post cure procedure to be performed.
(10) Carefully remove excess resin from under-
neath the replacement expanded foil.
a. Visually Inspect.
(11) Cut a piece of non-porous release ilm to the
(1) Disassemble (if required) and trim laminate
size of the repair area. Place on repair area.
to speciied dimensions (if applicable).
(12) Cut a piece of breather cloth to extend past
(2) Visually inspect surface of laminate for resin
the extended repair area and place on repair.
starved areas or voids and ill with additional
adhesive as necessary. If there are any
(13) Cover with nylon bagging ilm.
rough edges or excess resin low, sand them
smooth.
(3) Coin tap or ultrasonically inspect the repair
If insuficient pressure is applied, the electrical
measurements will be high.
speciic technical manual to insure adequate
(14) Apply pressure to the repair using a vacuum
(4) Trim and sand area for painting according to
the system speciic technical manual.
system speciic technical manual.
(16) Debag the repair area.
Protect areas not to be reinished with covers
to prevent damage. Do not allow paint, corro-
(17) If necessary, lightly hand sand the entire
sion removers, solvents, or corrosion resistant
repair area using 240 or iner grit abrasive
coating to contact transparent plastic panels,
paper to remove any surface imperfections
bonded joints, reinforced plastic surfaces, or
caused by resin squeeze out. Vacuum sand-
rubber seals.
ing dust from repair area. Wipe with clean,
dry wiping cloth to remove sanding residue.
b. Paint. Trim and sand area for painting according
to the system speciic technical manual or TM 55-1500-
345-23. Coat with MIL-PRF-23377 primer and inish
with MIL-DTL-53039 or MIL-DTL-64159 CARC paint.
Do not expose expanded foil when sanding.
MIL-DTL-53072 provides additional guidance.
7-117/(7-118 blank)