Reassembly Of The One Way Valve - Kirby Morgan 77 Operation And Maintenance Manual

4) Inspect the seat, wiper, o-ring, poppet o-ring and
poppet for wear, replace if necessary. Be sure each
part is clean and all components are lightly lubricated
with the appropriate lubricant.
A repair kit is available for replacement parts, (Part
#525-330). The one-way valve overhaul kit is also
included in( the standard helmet overhaul soft goods
kit.) All o-rings should be replaced during normal/
annual overhauls.
5) Be careful to wipe the poppet and poppet o-ring
thoroughly, removing nearly all silicone to prevent
foreign materials from sticking to these components.
6) Replace the spring.

7.3.2 Reassembly of the One Way Valve

1) Slide the new o-ring over the poppet.
2) Insert the new spring into the valve body, followed
by the poppet.
3) Next, install the new o-ring and new wiper on the
seat. Thread the seat into the valve body.
4) Tighten the seat to 150 inch lbs. (17 newton meters)
with a torque wrench while holding the body in a soft
jaw vise or wrench.
5) If the adapter has been removed, it must be cleaned
and wrapped with Teflon
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
tape.
®
Tighten the non-return (one-way valve) in the
sideblock to 150 inch lbs. (17 Newton Meters) with
a torque wrench.
WARNING
Do not allow any Teflon
end of the adapter, or to enter the one-way
valve. Loose pieces of Teflon
interfere with the performance of the one-
way valve or the regulator and may block
the diver's air supply. This could lead to
death through suffocation.
Kirby Morgan 77
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