TM 1-1520-240-BD
(10)
Join coated surfaces immediately. Hold
them together gently for 15 to 30 seconds before
applying pressure.
(11)
Apply equally distributed pressure with
clamps.
(12)
Scrape excess cement onto masked area.
(13)
Allow assembly to set for 2 hours.
(14)
Remove clamps. Allow assembly to cure
for 2 hours at a minimum of 70°F (21°C).
(15)
For final cure, allow assembly to set for 4
hours at 148oF (64oC).
2-14. APPLICATION
OF
TAPES .
Subsequent
paragraphs contain information on the various tapes
used on the structure and component parts.
a.
Application of Antichafing Tape. This tape is
used if a smooth, nonabrasive surface is desired over
rivet heads and seams.
CAUTION
Exposure of antichafing tape to
sunlight for 4 hours will destroy its
adhesive
qualifies.
Storage
of
unused tape should be in a cool dark
area.
(1)
Remove all burrs, rough and sharp edges,
and loose primer in area to be taped.
(2)
Using an air blast, brush or dry cloth,
remove loose metal clips, dust, and primer scale.
(3)
Using a cloth moistened with naphtha,
wipe all surfaces to be taped.
NOTE
Solvent may be substituted for
naphtha. The solvent must be wiped
dry and not allowed to evaporate on
surfaces.
(4)
Repeat step c. at least two times or until
the surfaces are clean.
(5)
Cut a length of tape as follows:
(a)
if protrusions are less than 1/4-inch
high, the tape should be cut to extend 1 to 2 inches each
side of protrusion.
(b)
If protrusions are higher than 1/4-
inch, the tape should be cut to extend 1-1/2 to 2 inches
each side of protrusion.
NOTE
Lengths of tape should be cut to
allow protective paper line to extend
beyond cut edge.
This will make it easier to remove
tape. Continuous lengths of tape
should be used whenever possible.
(6)
Remove liner from tape. The activator
may have a harmful effect on some materials.
Therefore, precautionary measures should be taken to
prevent activator or items dampened with activator from
contacting other materials.
(7)
Pour a sufficient amount of activator (item
16, Appendix C) into a pan.
(8)
Use
a
wooden
applicator
to
apply
activator with a wiping motion. Apply activator to
adhesive side of tape.
(9)
Apply activated tape to cleaned surfaces
by starting tape at one end and pressing it down firmly.
Smooth tape down with a wooden scraper and work tape
from center to edge with sufficient pressure to eliminate
air pockets and wrinkles and to ensure good adhesion.
NOTE
All edges must be firmly bonded to
surface. Small blisters and voids
must be kept to a minimum. Voids
around rivet and screw heads are
permissible.
2-57
