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36
Bc Patch Kit Instructions
WARNING: Do not attempt to perform these proce-
dures using patches or adhesive other than those
provided in the Bc Patch Kit pn 42611.
WARNING: Do not attempt to patch a tear or puncture
which is located directly over an internal baffle, within
50mm (2 inches) of a seam or is larger than 13mm (1/2
inch) in diameter or length.
WARNING: Adhesive should only be applied in a
room with plenty of cross ventilation. carefully read
all cautions on the label of the adhesive and avoid
inhaling vapors.
Bc Patch Kit
1. Inspect the material of the BC surrounding the hole or tear to
ensure that it is perfectly clean and dry. Rinse and dry the BC to
clean if necessary.
2. Check to ensure that the patch extends at least twice the diam-
eter or length of the hole or tear on all sides.
3. Apply a generous coat of Weld-On 4784® adhesive to the mate-
rial of the BC surrounding the hole or tear. Allow this preliminary
coat to set for at least twenty four hours.
cAutIoN: It is important to prevent any adhesion be-
tween the internal surfaces of the bladder caused by
the entrance of adhesive through the hole or tear. Posi-
tion the bladder as needed to maintain a separation of
the bladder at the point of the hole or tear.
4. After twenty four hours have elapsed, apply a generous sec-
ond coat of adhesive to the material of the BC surrounding the hole
or tear and to the glossy surface only of the patch. Wait exactly
twenty minutes.
Glossy Side
5. After twenty minutes have elapsed, apply a third coat of adhe-
sive to the BC material, a second coat to the patch. Wait between
five to ten minutes for this coat to grow tacky and immediately ap-
ply the patch over the hole or tear, using a small roller to press out
any pockets of air that may be present between the patch and BC
material. Position a 2.27 kg (5 Lb.) weight directly over the patch to
apply pressure and allow exactly one hour for the patch to set.
note: Do not allow the patch to set more than one
hour before performing the next step.
6. Partially inflate the BC no more than 1/2 full, causing the inner
surface of the bladder to separate if adhesion has occurred. Apply
a final coat of adhesive over the entire patch area. Allow twenty
four hours to completely cure, an then fully inflate the BC to en-
sure that leakage is no longer present. If the BC does not remain
completely full for at least one hour, immerse it in fresh water to
determine the source of leakage and repair as needed.
this concludes Bc Patch Kit Instructions
mDB technical manual
Non-Glossy Side
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