Snap Tabs, Chin Strap, And Earphone Retainers - Kirby Morgan 77 Operation And Maintenance Manual

8.8 Snap Tabs, Chin Strap, and
Earphone Retainers
On the KM77, all of the snap tabs fasten into the
helmet ring on the base of the helmet. They are all
secured by bolts that are fastened with Loctite
include the bolts that secure the chin strap and the
earphone retainers.
8.8.1 Snap Tab Removal
Required Tools:
Phillips head screwdriver
1) Remove the head cushion and chin cushion.
2) Remove the screw securing any snap tab that needs
replacement.
Removing the snap tab that also holds the
earphone retainer.
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
8.8.2 Snap Tab Replacement
Required Tools:
Phillips head screwdriver on torque screwdriver
Loctite 222
®
Plastic mallet
. These
®
1) If you are replacing snap tabs associated with an
earphone retainer clip or chin strap, the snap tabs are
incorporated into these components and cannot be
replaced separately.
2) Remove any corrosion from the sealing surface
with a soft brush and dilute white vinegar solution.
Rinse thoroughly and ensure the threads are com-
pletely dry before continuing installation.
3) Apply Loctite
secure the snap tab.
4) Thread the screw into the hole in the helmet
ring, taking care to ensure the base of the snap tab
is aligned within the slot for the snap tab. Apply 25
inch pounds of torque.
Snap tabs must be installed
WARNING
Avoid any contact between Loctite
the face port. This can cause the port to
fail unexpectedly and drowning could re-
sult.
Kirby Morgan
to the threads of the screw that
®
with Loctite .
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77
®
and
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139