PS Magazine - TB 43-PS-558
PS, The Preventative Maintenance Monthly
ISSUE 558
MAY 1999
PS 558
45
PS 558
44
MAY 99
Base of nosecup seated?
Disk in place?
Deflector on correct side?
.
Check It Out
Spot problems before you go to the
field. Do the PMCS in the -10 TMs,
but pay special attention to these items:
Air flow deflector
—The deflector
is supposed to be on the left side of the
mask for a right-handed shooter and
on the opposite for a left-handed
shooter.
Nosecup
—Look for its disk. The
disk often disappears. Without it, the
lenses fog up. Rotate the disk with your
finger. If it’s sticking, get a new one.
Make sure the base of the nosecup is
seated in the outlet valve housing
groove.
Voicemitters
—Look for four bumps
on the voicemitters. If you don’t see
the bumps, the voicemitter is back-
wards and the mask won’t protect you.
Also feel the side voicemitter retain-
ing ring for looseness. If necessary,
tighten it with the carrier’s D-ring.
If it’s on the wrong side, tell your
NBC NCO and let him switch it. It’s a
tricky job that can tear the mask if it’s
done wrong.
M40-Series Masks . . .
here are
a few ways
you and i can
breathe
easier
.
Bumps visible?
there's
more
on the
next page!
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