Head Cushion Foam Spacer (Hcfs) - Kirby Morgan 77 Operation And Maintenance Manual

3.4.2 Head Cushion Foam Spacer (HCFS)

The head cushion foam spacer (HCFS) is a simple
length of foam that is nested into the head cushion.
The spacer helps properly position the top and back
of the head in the helmet by using a larger foam piece
in the lower neck area which helps push the head for-
ward, and the nose and mouth into the oral nasal mask.
3.4.2.1 Installation of Head Cushion Foam
Spacer (HCFS)
Note: In September of 2012 the head cushion foam
spacer (HCFS) was upgraded with an elastic/Velcro
strap at the top front part of the HCFS bag. This new
feature is intended for use with head cushions P/N
510-754, or the 510-521 which will soon have the
mating Velcro patches.
Note: If using the HCFS with P/N 510-682 or a P/N
510-521 without a Velcro patch, the elastic/Velcro
strap can simply be folded over the top front portion
between the head cushion and the helmet shell, or it
may be trimmed off if desired.
1. Install the HCFS into the top inside portion of the
head cushion. Wrap the elastic/Velcro strap around
the front top edge and attach onto the mating Velcro
patch in front of the hanging loop.
Align the front
of the HCFS
with the front
edge of the
head cushion,
wrap the elastic/
Velcro Strap around
to the top of the head
cushion and secure.
Proper installation and alignment of the HCFS in the helmet.
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003
3.4.2.2 Donning the Head Cushion Foam
Spacer (HCFS)
Hold the HCFS towards the back of the helmet when
donning.
The tag
on the
HCFS
and sewing
seam should
be facing the
back against
the head
cushion
Kirby Morgan 77
®
33