Nose Block Assembly; Nose Block Assembly Removal; Nose Block Device Replacement; Band Mask Frame Kmb 18A/B - Kirby Morgan KMB-18 A/B Operation And Maintenance Manual

KMB 18 & 28 MANUAL
6.10

NOSE BLOCK ASSEMBLY

(3 AND 32-34)
6.10.1 Nose Block Assembly
Removal
Tools Required:
Slip Joint Pliers
Rag or cloth
7/16 inch Open End Wrench
Fig. 6.48 Removal of the nose block knob.
1) Hold the nose block knob (34) with a pair of
pliers (padded by a cloth) while unscrewing the
nose block device (3) with your other hand inside
the mask at the pad end.
2) After the knob (34) is removed, loosen and
remove the packing nut (33).
3) Slip the two O-rings (32) off the end of the shaft
of the nose block device (3).
4) The pad end of the shaft may be bent with pliers
to better fit an individual. A larger pad of rubber
can also be glued onto this pad or stretched into
place.
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© Copyright 1970-2003 Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 010518001
6.10.2 Nose Block Device (3)
Replacement
1) Prior to reassembly, lubricate the two O-rings
(32) with silicone grease.
2) Slide the shaft (3) through the Band Mask
frame (17).
3) Place both O-rings (32) on the shaft (3), fol-
lowed by the packing nut (33) and the knob (34).
Fig. 6.49 Be sure to reinstall the nose block device O-rings.
4) Tighten the packing nut (33) until snug. DO
NOT OVERTIGHTEN AS THIS WILL MAKE
IT DIFFICULT TO SLIDE THE NOSE BLOCK
DEVICE IN AND OUT.
5) Tighten the knob (34) with the pliers while
holding the shaft (3) with your hand at the pad end
inside the mask.

6.11 BAND MASK FRAME KMB 18A/B

The Band Mask frame (17) on the KMB 18A/B is
constructed by hand of fiberglass cloth, fiber-
glass mat, and fiberglass strands impregnated
with polyester resin. It is strong and extremely
durable.
A polyester color coat covers the exterior of the
unit. Although this color is more durable than
paint, it can be scratched and chipped. Light
scratches can be remove using automotive rub-
bing compound and waxing.