TM 1-1500-204-23-11
7
4
Remove temporary fasteners.
Fasten with clamps (see igure
7-47, View C). See paragraph 6-19j
for use of clamps.
Repeat steps 1 through 7 for LML
8
surface.
Apply a thin layer of adhesive on
5
the rib spacer and repair rib mating
(s) Prepare parent rib inner rib surface,
surface, using a spatula and adhe-
repair rib and rib spacers for bonding by
sive comb per paragraph 7-6.
lightly hand sanding with 150-180 grit
abrasive paper as described in para-
6
Lay rib spacer on UML surface of
graph 6-7. Handle prepared surfaces
repair rib.
wearing powder free latex gloves until
patch bonding is complete. If repair rib
7
Fasten with clamps (see igure
and rib spacers are not to be bonded
7-47, View D). See paragraph 6-19j
immediately, cover them and the repair
for use of clamps.
area with clean barrier material and
secure with preservation tape to pre-
Remove excess squeeze out.
8
vent contamination.
Repeat 5 through 8 for LML surface
9
(t)
Bond Together the Parent Rib, Repair
of repair rib.
Rib and Rib Spacer (see igure 7-47,
View C and View D).
Failure to properly cure adhesive in accor-
dance with the speciied cure cycle will result in
Reduced strength will result if the incorrect
reduced repair strength may not be detectable
mix ratio is used, if an excessive amount
by visual or nondestructive inspection. This
of air is introduced into the adhesive during
may result in loss of structural integrity.
mixing, or if mixing is inadequate and may
result in loss of structural integrity.
10 Allow adhesive to set at room tem-
perature for a minimum of 8 hours.
Pressure must be applied to adhesive within
As an alternate, the adhesive/iller
the pot life of the resin. For ambient temper-
may be set using a heat lamp using
atures in excess of 90 F, decrease this time
the cure cycle from the system
by 50%. An unsatisfactory repair will result
speciic technical manual. Operate
if the resin gels before adequate pressure is
heat lamps per paragraph 6-19h.
applied and may result in loss of structural
integrity. Select and prepare a heat blanket
11 Remove clamps.
(if required) and all necessary vacuum bag
materials prior to mixing resin.
(u) Prepare Skin Spacer and Mating Sur-
faces for Bond. Remove peel ply from
spacer surface and tape from splice
Prepare of adhesive as described
1
plate. Prepare spacer and mating sur-
in paragraph 6-17 .
faces (splice plates and rib spacers)
for bonding by sanding with 150-180
NOTE
grit abrasive paper as described in
Use scrim cloth if required by the system
paragraph 6-7. Handle prepared sur-
speciic technical manual.
faces wearing powder free latex gloves
until patch bonding is complete. If skin
Apply a thin layer of adhesive on
2
spacer is not to be bonded immediately,
repair rib and parent rib mating sur-
cover it and the repair area with clean
faces, using a spatula and adhe-
barrier material and secure with preser-
sive comb per paragraph 7-6.
vation tape to prevent contamination.
Insert the repair rib into the parent
3
(v) Bond Skin Spacer to UML Surfaces
rib and align with edge of part.
(see igure 7-47, View E).
7-82
