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Oral Nasal Mask and Microphone Installation
8. Next, fully engage (clockwise) the large nut
on the bent tube into the regulator inlet nipple
hand tight until resistance is felt. Do not tighten
further. This will ensure the nut is bottomed on
the shoulder of the bent tube.
9. Engage the jam nut fully against the large nut
on the bent tube.
10. Using a 7/8 inch open end wrench hold the
large nut on the regulator end of the bent tube.
Use a torque wrench and torque the jam nut
against the bent tube mount nut to lock it in
place. ALWAYS REFERENCE Appendix Contents,
Torque Specs starting on page APNDX-19 in the
modular manual to confirm correct torque.
Tighten the bent tube to the proper torque value.
11. Use a torque wrench inside the helmet with
a 1 3/8 inch socket or regulator mount tool P/N
525-625 found in the KMDSI tool kit P/N 525-
630 and extension to torque the regulator mount
nut. ALWAYS REFERENCE Appendix Contents,
Torque Specs starting on page APNDX-19 in the
modular manual to confirm correct torque.
12. Attach the whisker to each side of the face
port retainer using the spacers, zinc anodes
or kidney plates and screws. Using a torque
screwdriver, carefully torque these screws to
the correct torque for the helmet shell you are
installing the whisker wings onto. ALWAYS
REFERENCE Appendix Contents, Torque Specs
starting on page APNDX-19 in the modular manual to
confirm correct torque.
16
© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 210607001
455 Balanced Regulator Installation
1.2.3 Oral Nasal Mask and
Microphone Installation
1. Snap the oral nasal mask over the regulator
mount nut. Take extra care to make sure the mask
has snapped into position all the way around the
mount nut.
2. Reinstall the microphone.
1.2.4 Nose Block Device Installation
1. Prior to reassembly, lubricate the two o-rings.
2. Slide the shaft through the oral nasal mask in
the helmet shell.
3. Place both O-rings on the shaft, followed by
the packing nut and the knob.
4. Tighten the knob with the pliers, padded by a
cloth, while holding the nose pad end inside the
helmet with your hand.
5. Tighten the packing nut with the 7/16 inch
wrench until snug. Do not over tighten, as this will
make it difficult to slide the nose block device in
and out.
Install the nose
block device through
the interior of the
oral nasal mask.
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