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KMB 18 & 28 MANUAL
6.13.2 Main Exhaust Body (67)
Replacement
If the seal is broken between the main exhaust
body (67) and mask frame (17) on the KMB 18
the body should be removed and reinstalled.
1) Remove the body (67) by unfastening the three
screws (69). Clean off all traces of the silicone
sealant from the outside of the mask frame (17)
and main exhaust body (67).
2) Apply fresh silicone sealant to the main ex-
haust body (67) where it contacts the mask frame
(17). Take care to prevent any silicone sealant
from entering the main body (67) as this would
interfere with the proper performance of the main
exhaust valve (66).
DANGER: Be sure to use the cor-
rect length screws when mounting the
main exhaust cover. Longer screws could
obstruct the exhaust and cause the mask
to leak. This could lead to drowning. Use
only Kirby Morgan Genuine Parts.
3) Position the body (67) on the mask frame (17)
and tighten the screws (69) to 13 inch pounds of
torque.
6.14 DEMAND REGULATOR ASSEMBLY
(63A/B)
6.14.1 General
The regulator system on the Kirby Morgan Band
Mask 18A/B is simple and highly reliable. How-
ever, inhalation resistance may be high if not
maintained properly.
If the regulator does not breathe easily, the diver
cannot work hard and will tire rapidly. Simply
put: If the demand regulator does not work prop-
erly the diver cannot work properly. This makes
the maintenance of the demand regulator assem-
bly essential.
page 78
© Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 010518001
For the gas inlet valve and adjustment system to
operate properly, the components in the demand
regulator MUST be in good condition and MUST
be periodically adjusted internally.
Special tools should be used to work on the
regulator. Disassembly, assembly, and adjust-
ment can be done without these tools, but the
work is much easier and the adjustment is better
if these tools are used. The tools are available
together along with a tool pouch. The tool kit with
pouch is KMDSI Part #525-620.
Fig. 6.58 The regulator tool kit KMDSI #525-620
6.14.2 Demand Regulator Assembly
(63A/B) Removal
Tools Required:
1 1/4 inch Socket on Torque Wrench
1/4 inch Flat Blade Attachment on Torque Screw-
driver
11/16 Open End Attachment on Torque Wrench
13/16 Open End Attachment on Torque Wrench
2 ea. 7/8 inch Open End Attachment on Torque
Wrench
1) To remove the regulator from the Band Mask,
the hose assembly (119a) on the Kirby Morgan
Band Mask 18A, or the bent tube assembly (119b)
on the Kirby Morgan Band Mask 18B or 28 must
be removed first.
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