Earphone Removal And Replacement; Waterproof Connector; Waterproof Connector Removal - Kirby Morgan KMB-18 A/B Operation And Maintenance Manual

CAUTION: Take care not to break
the seal made by the silicone sealant
where the communications posts pen-
etrate the mask frame. If these posts turn
the mask will leak. This could lead to a
rapid use of the breathing gas as the diver
attempts to keep the mask clear.
6.4.4 Earphone (10,11) Removal and
Replacement
Tools Required:
1/8 inch flat Blade Screwdriver
The earphones (10,11) may be replaced individu-
ally if needed, however, if one is "bad", the other
earphone will probably need to be replaced soon,
too.
1) Remove the nuts (71) and washers (72) from
the communications posts (73). If you are using
the optional terminal block (82) this may be
where the wires from the earphone and micro-
phone are connected.
2) Note the position of the terminal wires. Lift the
terminal lugs off of the communications posts.
Discard the old earphones.
4) Install the terminals for the new earphones (10,
11). Note that the wires must go on separate
terminals as before.
5) Tighten the nuts (71) carefully, without turning
the communications posts (73). If the posts turn,
it means that the seal made by the silicone sealant
(RTV) on the mask frame has been broken. If this
happens the posts (73) will allow water to leak
into the mask.
(See Section 6.4.6.2 for repair)
Document # 010518001 © Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved.
KMB 18 & 28 MANUAL

6.4.5 Waterproof Connector (80)

Kirby Morgan Band Masks 18A/B and 28 are
supplied either with an optional waterproof con-
nector (80) or a set of communication posts. The
optional waterproof connector (80) is subject to
failure if the Band Mask receives rough handling.
To replace the connector use the following proce-
dure.
6.4.5.1 Waterproof Connector (80) Removal
Tools Required:
3/8 inch Open End Wrench
5/8 inch Open End Wrench
11/16 inch Open End Wrench
3/4 inch Open End Wrench
1) KMB-18 only, remove the comfort insert (14).
2) Remove the connector wire lugs from the inte-
rior terminal block (82).
Fig. 6.16 Remove the earphone wire lugs from the
terminal block.
3) Remove the nut (70) from the packing gland
(76) on the interior of the mask frame (17).
4) Separate the connector/packing gland assem-
bly (76, 74, - 81) from the mask frame (17).
5) Place the packing gland (76) in a vice and
unscrew the packing nut (79).
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