Bell OH-58A Technical Manual page 228

TM 55-1520-228-BD
FUEL SYSTEMS
6. Refuel the aircraft.
Record BDAR action taken. When
7.
mission is complete, as soon as
practical, repair the equipment/system
using standard maintenance procedures.
OPTION 2: Adhesive Repair.
LIMITATIONS: Temporary repair, 100
flight hour capability. Inspect after
every flight.
PERSONNEL/TIME REQUIRED:
. 1 Soldier
. 3 Hours
MATERIALS/TOOLS REQUIRED:
. Knife
. Solvent, 1-1-1 Trichloroethane or
Equivalent (item 59, Appx C)
. Repair Fabric
. Abrasive Cloth (item 1, Appx C)
. Adhesive (item 3, Appx C)
. Plastic Container/Cup
. Wooden Tongue Depressor (item 60,
Appx C)
PROCEDURAL STEPS:
Defuel the aircraft. Refer to
1.
option 1, step 1.
2. Once step 1 (above) has been
completed, locate the damage. Trim only
the outer exposed damage area to provide
a reasonably smooth exterior surface.
DO NOT ENLARGE HOLE.
Abrade and solvent wash the area
3.
surrounding the damage.
4 inches beyond the damage.
4. Cut a fabric patch to overlap the
damaged area by a minimum of 1 inch all
the way around.
Soak the patch in
solvent. (NOTE:
the center of the patch.)
5. Mix the adhesive as described below
in steps 5a thru 5h, refer to Figure
12-3.
12-6
Clean at least
No hole is required in
CAUTION
Wear goggles or other eye protec-
tion during all operations.
a. Remove the tape band from Semkit
cartridge and pull the mixing rod
straight up toward the top of the
cartridge.
b. Squeeze cartridge slightly in area
of the removed tape band to deform foil
barrier.
c. To mix dry filler to base com-
pound, push mixing rod to bottom of
cartridge and begin stroking in spiral
clockwise motion from top to bottom of
cartridge, rotating mixing rod approxi-
mately 90° with each stroke.
the total number of strokes indicated on
the instruction card accompanying each
Semkit (40 strokes). A stroke is one
complete in and out cycle.
stroke, mixing rod should be fully
extended.
Pull mixing rod out approximately
d.
one-third of way.
e. Insert ram rod into hole in top of
mixing rod and inject about one-third of
curing agent into the cartridge.
CAUTION
Use firm but even pressure. Do
not force, tap, or jolt ram rod.
f. Repeat steps a and b until all of
the contents of the rod are emptied into
the cartridge.
Mix curing agent into cartridge by
g.
repeating step c.
h.
Grasp cartridge firmly at neck and
unscrew mixing rod by turning counter-
clockwise approximately three turns.
Remove mixing rod and discard.
Mix for
On last