Latex Neck Dam Replacement - Kirby Morgan 77 Operation And Maintenance Manual

Kirby Morgan 77
®

8.6.3 Latex Neck Dam Replacement

Tools Required:
7/64" Allen Wrench.
#2 Phillips Screwdriver
Torque Screwdriver with a 7/64" Allen wrench at-
tachment and #2 Phillips head screwdriver attach-
ment.
Silicone Grease.
Felt Tip pen.
Sharp Razor Blade
New neck dams are supplied without mounting screw
holes punched in them. As the mounting screws are
inserted and tightened they cut their own holes in the
neck dam.
1) Install the split rings inside the trimmed outer lip
of the neck dam. Turn the neck dam over and lay it
flat on the work surface. The split rings will now be
hidden by the neck dam.
2) Place the stepped neck dam ring on top of the
neck dam.
3) Align and center the stepped ring to the split rings
by looking at both ends. Feel the inside edge of the
stepped ring and the split rings by pressing on the
dam. This will help you center the split rings.
CAUTION
The neck dam, stepped ring and split
rings MUST be properly aligned in order
to get the screws to thread correctly.
Install the split rings inside the trimmed outer lip
of the neck dam.
4) Lubricate the tips of the neck dam mounting
screws lightly with silicone grease. This will prevent
them from grabbing and twisting the rubber.
136
5) Use the punch to align the holes, if necessary, and
start mount screws into each one of the split rings,
one on either side of the groove where the pull strap
is mounted. This will help hold and align everything
while the other screws are being put in.
6) Use a torque screwdriver with a 7/64" Allen
wrench attachment. Press down and turn the screw
at the same time. This will punch the hole in the
neck dam and start the mount screw into the split
ring.
7) Tighten the screws to 10 inch lbs (1.1 Newton me-
ters) of torque.
The center screws cannot be torqued
with a torque screwdriver, "hand torqu-
ing" these with a 7/64" Allen wrench is
sufficient.
Center the split rings by pressing on the dam and
feeling the inside edge of the stepped ring and the
Use the screw to punch through the neck dam.
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
CAUTION
split rings.