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Exhaust System Installation
remove. Inspect this assembly and replace parts
as needed.
1.2 455 Balanced Regulator
Installation
Tools Required
• Torque Wrench
• 7/8" and 11/16" Open End Attachments
• Socket Wrench, Regulator Mount Nut,
P/N 525-625 (in Tool Kit Included
with Helmet) or a 1 3/8" Socket
• 3/8" Drive Extension—Minimum 3" in Length
• Torque screwdriver
• 1/ 4 " flat blade screwdriver attachment
• 7/8" Open End Wrench
• Christo-Lube
®
or equivalent
oxygen compatible lube
• Loctite
248 or equivalent medium
®
strength thread locker
Before beginning step one ensure the exhaust
main body with attached whiskers is secured to
the exhaust flange of the regulator body with the
correct tie wrap.
Every effort is made to ensure that this,
and any of Kirby Morgan's regulators, are
interchangeable among the wide variety
of helmets and masks that Kirby Morgan
produces. 40 plus years of producing
thousands of helmets has resulted in
some variations. Please be aware that the
NOTE
final alignment of the regulator may have
variation from unit to unit, and this in no way
will affect the function and/or performance
of the finished 455 regulator.
EXHAUST SYSTEM NOTE: Each Quad and Tri-
Valve exhaust assembly can be removed and
replaced onto the exhaust flange of the regulator
as a complete unit. If assembled using the indi-
vidual components, special attention is required
to ensure the exhaust valves are correctly orien-
tated and seated inside the exhaust whiskers. If
replacing valves or rebuilding the exhaust valve
assembly by individual components see Quad
Valve and Tri-Valve section in our modular manual
8
© MMXXI Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 210607001
455 Balanced Regulator Installation
1.2.1 Exhaust System Installation
1. Insert the opening on the exhaust main body
onto the exhaust outlet of the water dump valve,
while at the same time aligning and inserting the
threaded mounting tube on the regulator, into the
mounting hole on the pod.
2. Install the tie wrap around the quad main
exhaust body and tighten. Cut and remove excess
tie wrap.
3. Install the sealing O-ring and regulator mount
nut. DO NOT FULLY TIGHTEN THE NUT AT THIS
TIME.
1.2.2 Bent Tube Assembly and
Regulator Installation
1. Clean the bent tube in accordance with the
cleaning procedures in "1.3 General Cleaning
& Inspection Procedures" on page GENPRE-4. The
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