Reassembly Of Auxiliary Valve - Kirby Morgan KMB-18 A/B Operation And Maintenance Manual

4) Check the seat in the auxiliary valve body (95)
for wear or unevenness. Replace the body (95) if
necessary.
5) On the Kirby Morgan Band Mask 18B and 28,
to remove the auxiliary valve body (95) from the
side block (94a/b) the one-way valve assembly
(114) must first be removed, as per Section 5.5.3.
6) On the Kirby Morgan Band Mask 18A, not
only must the one-way valve assembly (114) be
removed, but you must also remove the regulator
hose assembly (117a) as per Section 6.8.1

6.7.3 Reassembly of Auxiliary Valve (103)

1) With the exception of the tapered pipe thread
end of the auxiliary valve body (95), lubricate all
components with a light coating of silicone grease.
2) Apply 1 1/2 wraps of 1/2 inch Teflon tape to the
tapered pipe thread end of the auxiliary valve
Fig. 6.38 The tapered pipe thread end of the auxiliary valve
must be wrapped properly with Teflon tape prior to instal-
lation.
body (95) prior to installing it in the sideblock
(94a/b). Be sure the Teflon tape does not extend
over the opening of the valve. There must be no
loose bits of tape in the opening of the sideblock.
Tape particles can interfere with the proper func-
tion of the breathing apparatus and may block the
diver's air supply. After the auxiliary valve is
mounted in the side block, the one-way valve and
regulator hose (on the Kirby Morgan Band Mask
18A) may be reinstalled.
Document # 010518001 © Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved.
KMB 18 & 28 MANUAL
DANGER: Take care not to allow
any pieces of Teflon tape to enter the side
block. If these pieces of tape enter the
demand regulator assembly and/or de-
fogger valve they may block the flow of air
to the diver. This could lead to death
through suffocation.
3) Place the washer (97) and packing (98) on the
stem (96).
4) Holding these components in place on the stem
(96), screw the stem into the auxiliary valve body
(95).
Fig. 6.39 Screw the stem into the auxiliary valve body.
5) Rotate the stem (96) until it is seated all the way
in, then back it out about 1/2 turn.
6) Start threading the packing nut (99) onto the
body (95). Run the nut in and tighten slightly with
a wrench.
7) Place the knob (100) onto the stem (96) and
rotate the stem all the way out, then back again.
The rotation must be smooth. If "hard spots" or
unevenness are felt during the rotation, the stem
(96) may be bent and could need replacement.
8) Tighten the packing nut (99) with a wrench
until friction, or moderate resistance is felt when
turning the knob (100).
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