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© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318002
Chapter 8 - Neck Dam
Kirby Morgan
®
37SS
Install the split rings inside the trimmed outer lip of 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.
B
CAUTION
The neck dam, stepped ring and split
rings MUST be properly aligned in
order to get the screws to thread cor-
rectly.
Center the split rings by pressing on the dam and feeling the
inside edge of the stepped ring and the split rings.
4) Lubricate the tips of the neck dam mounting screws
lightly with silicone grease. This will prevent them
from grabbing and twisting the rubber.
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.
B
CAUTION
The center screws cannot be torqued
with a torque screwdriver, “hand
torquing” these with a
7/64
" Allen
wrench is sufficient.
Use the screw to punch through the neck dam.
7) Tighten the screws to 10 inch lbs (1.1 Newton
meters) of torque.
8) Install a second set of screws in the two holes
immediately adjacent to the tongue on stepped ring.
9) Once the 4 "holding" screws are in place, screw
the rest of the neck dam mount screws in until snug.
Then torque the neck dam mount screws in a stag-
gered pattern, taking up the tension a little bit at a
time, until 10 inch pounds (1.1 Newton Meters) is
reached on each individual screw.
10) Similar to neoprene neck dam installation, use
a sharp razor blade to trim the excess latex off the
outside flap on the neck dam.
8.6.4 Trimming a Latex Neck Seal
Tools Required:
Large, sharp scissors
