PS Magazine - TB 43-PS-664
PS, The Preventative Maintenance Monthly
ISSUE 664
MARCH 2008
50
PS 664
MAR 08
•
Check the head harness’
elasticity every time you do
PMCS. Gently stretch all the
harness straps to make sure
they still have spring. If they
don’t easily snap back, get
your CBRN specialist to replace
the harness ASAP.
•
Make sure the head harness
elastic webbing is on top and its
seams point out. If you have the
harness inside-out, the crosspiece
rubs a sore spot on your head.
•
Tighten the head harness snug, but not so
snug you can’t stick a Fnger under each strap.
If the straps are tighter than that, count on a
headache. Once you have the straps tightened
correctly, loosen only the cheek straps to take
off the mask. Then when you put the mask
back on you need to tighten only the cheek
straps to be ready for action. Saving those
seconds could save your life.
•
Don’t tape the straps in one position. That can lead to a headache or hot spot on your
head. Plus you can’t adjust the mask.
•
Store the mask with the head
harness pulled over the front of
the face piece. That lets you just
stick your face in the mask and
pull the harness back over your
head, saving more life-saving
seconds. Don’t store the harness
over the canister, though. That
stretches the elastic and causes
it to weaken.
M40/M42-Series Masks…
Bad Harness
Causes
Bad Headaches
harness mask
headaches with
a little pm…
Gently stretch straps to check for elasticity
Webbing on top with seams pointing out?
Loosen only
check straps
when you
take off
mask
Pull head
harness
over face-
piece for
storage
if you want the
worst headache
ever, wear your
m40/m42 mask
with a worn-out
head harness.
you have to
crank the straps
so tight that
within 30 minutes
you’ll have a
head-busting
headache.
if that’s
not bad
enough,
your
mask may
not seal
well.
there
goes your
protection.
oh, I think my
head is going
to bust open.
thOse worthless
harness straps
are giving you a
killer headache!
tsk,
tsk.
664.50-51.indd
1-2
2/4/08
12:39:29 PM
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