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SuperLite
®
17B
120
© ⅯⅯⅩⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 120613005
The nose block packing nut must be tightened enough
to seal the nose block device shaft but loose enough
for the device to slide in and out.
8.3.2 Nose Block Device Replacement
1) Prior to reassembly, lubricate the two O-rings.
2) Slide the shaft through the oral nasal mask in the hel-
met shell.
3) Place both O-rings on the shaft, followed by the pack-
ing nut and the knob.
4) Tighten the packing nut until snug. Do not over tighten,
as this will make it difficult to slide the nose block device
in and out.
5) Tighten the knob with the pliers, padded by a cloth,
while holding the pad end with your hand.
The shaft for the nose block device slides through the
hole in the oral nasal mask.