© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318002
73
Kirby Morgan
®
37SS
Chapter 7 - Introduction
Chapter 7
Breathing System Maintenance and Repairs
7.1 Introduction
This chapter covers the maintenance and repair of all
components of the breathing system. The breathing
system includes the one way valve, the emergency
valve, the side block, the bent tube assembly, the
SuperFlow
®
350 regulator, and the oral/nasal mask.
Overhauls and Inspections IAW the Dive Lab
Overhaul and Inspection Checklist A2.1 can be ac
-
complished using the detailed instructions in this
chapter. The A2.1 checklist should be used and filled
out as a means of tracking maintenance and repairs.
Repairs and replacement parts and components can
be documented on the A2.1 checklist.
The breathing system on all Kirby Morgan helmets
and masks is simple and highly reliable. The fact that
they can continue to operate when the components are
not in a well-maintained condition can cause divers
to become complacent about maintenance.
Your life depends on the correct function of this
equipment!
While Kirby Morgan helmets and masks are simple
to maintain, like any type of life support equipment,
they do require regular periodic maintenance to func
-
tion properly.
All parts disassembled should be thoroughly cleaned
using the methods described in Chapter 6. Compo
-
nents that require the use of lubricants, sealing and
thread locking compounds should also be serviced.
Most fasteners have a torque value. It is impera
-
tive that all fasteners which have a torque value be
tightened to the torque specifications as outlined by
the procedure, or as listed in the table in the rear of
this manual. If in doubt as to the proper torque set
-
ting, contact your local authorized repair facility or
KMDSI.
7.2 Torque Values
All fittings must be tightened to their correct torque
values. See Appendix 1 in the rear of this manual for
the correct torque specifications.
B
WARNING
Overtightening a part may lead to
part failure and improper operation of
Kirby Morgan life support apparatus.
Under tightening a part may cause the
part to come loose and may also lead
to improper operation of the equip-
ment. Either situation may lead to
personal injury or death.
7.3 One Way Valve
NOTE: The one-way valve assembly should be
disassembled, cleaned and the three o-rings should
be replaced at least annually. Damaged and/or cor-
roded parts should be replaced. A repair kit is avail-
able for replacement parts, KMDSI Part #525-330.
B
CAUTION
Do not use pliers on the main body of
the one way valve. You may damage
the valve if pliers are used.
Do not use pliers on the main body of the one way valve
7.3.1 Disassembly Of The One Way Valve
Tools Required:
Soft Jaw Vise
1 inch Open End Wrench Attachment on Torque
Wrench
(If no vise is available use a backup 1 inch open end
wrench)
To disassemble and inspect the one way valve as
-
sembly:
