Chapter 8 Mechanical System Maintenance - Kirby Morgan 77 Operation And Maintenance Manual

8.1 General
This chapter covers the maintenance and repair of
all non-breathing system components of the Kirby
Morgan 77 Diver's Helmet. Correct repairs will re-
sult in better communications and improved overall
diver comfort and performance in getting the job
done. Numbers appearing in parentheses below are
"location" numbers that are used in the blowapart
drawing at the rear of this manual.
WARNING
Use only KMDSI original replacement
spares when repairing your helmet. The
use of other manufacturer's parts will in-
terfere with the performance characteris-
tics of your life support equipment and
may jeopardize your safety. Additionally,
any substitutions will void all warranties
offered by KMDSI.
All the spare parts in our catalog were specifically
manufactured (or inspected and tested) for Kirby
Morgan designed helmets and masks. When ordering
spares, insist on KMDSI original parts.
WARNING
All parts on Kirby Morgan masks and
helmets must be adjusted to their prop-
er torque specifications. See Appendix 1
for a complete listing of torque specifi-
cations for each part. Failure to adjust
parts to the recommended specifica-
tions could lead to helmet failure and
accidents. This could be fatal.
NOTE: For o-ring Removal/Inspection/Cleaning &
Installation see Chapter 6. For General Cleaning
Guidelines, including KMDSI recommended clean-
ing, sanitizing solutions, and procedures, see Chap-
ter 6.
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
Chapter 8
Mechanical System Maintenance
8.2 Helmet Shell Inspection
The helmet shell is constructed using stainless steel
It is extremely durable but can be damaged.
Helmets that have suffered damage may be repair-
able, but repairs to the helmet shell must only be ac-
complished by KMDSI technicians that have been
trained and certified by KMDSI.
1) Visually inspect the helmet shell exterior for ob-
vious signs of damage including cracks, gouges or
depressions.
NOTE: The helmet should not be used if it has any
gouges deeper than 1/16 inch. Repairs should only
be completed by a KMDSI trained and certified re-
pair technician that has received certification for
helmet shell repairs by KMDSI or Dive Lab Inc.
Any signs of cracks or depressions with fractures
or other damage should be checked by an autho-
rized KMDSI repair facility or a technician certi-
fied by KMDSI in specialized stainless steel repair.
WARNING
Do not attempt to re-thread the helmet shell
for the port retainer screws by yourself. If the
installation is done improperly, the port re-
tainer can come loose and the helmet could
flood resulting in drowning. Repairs should
be only be completed by technicians spe-
cifically trained and certified in these proce-
dures.
Kirby Morgan 77
®
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