PS Magazine - TB 43-PS-679
PS, The Preventative Maintenance Monthly
ISSUE 679
JUNE 2009
JUN 09
55
PS 679
JUN 09
PS 679
54
Dear Half-Mast,
I’ve looked in TM
3-4240-346-20&P
and I can’t find an NSN
for the M40 and M42
masks’ head harness.
Can you help?
CW5 K.V.
Dear Chief K.V.,
Certainly. For some reason the NSN for the head
harness was left out of the TM. The head harness
for both the M40 and M42 comes with NSN 4240-
01-464-7839 and its part number is 5-1-2796.
Pencil in this information in both Figs C-2 and C-4
until the TM is updated.
Dear Half-Mast,
I have tried with no luck to
get the M40/M42 mask PMCS
cards that are laminated and
connected with a ring. The cards
make it easier to do the PMCS
for the mask. Can you help?
SSG C.C.
Dear Sergeant C.C.,
Certainly. Order the cards with NSN
7690-01-491-9282 for $1.32. You still
need to keep a copy of the mask’s -10
TM for help with problems not covered
by the cards.
The new kit will have an increased
detection capability and is packaged in a
1-liter canteen pouch that is compatible
with modular load-bearing equipment
(MOLLE).
Like the M256A1, the kit will contain
chemical agent detector samplers (six
instead of 12), instruction cards and M8
paper. The M256A2 will also have four
low volatility hazard (LVH) adaptors
that will let you detect from solid and
liquid samples without having to heat
the kit or try to contain the liquid’s vapor
in a can.
The M256A2 can be ordered as a
complete item or reFlls can be ordered to
replace components. ReFlls will include
M8 paper, a package of six M256 vapor
samplers and a package of four adaptors.
That way units won’t have to order an
entire new M256A2 when they run out
of samplers or adaptors.
The LVH reFll kit, NSN 6665-01-564-
3795, will be available in ±Y 10 and can
be used with the M256A1 kit. Operator
instructions will come with the reFll
kit. During ±Y 10, the M256A1 will be
replaced with the M256A2, NSN 6665-
01-563-7473, by attrition. Don’t get rid
of your M256A1s. They can still be used
until their expiration dates.
M256
Detector
M40/M42-Series Masks…
Harness
NSN?
M40/M42-Series Masks…
PMCS
Cards a
Good
Deal
the m256a1 chemical agent
detector kit is going to
be replaced gradually by
an upgraded m256a2 kit
beginning in fy 10.
M256
Detector
my head
harness is
shot.
we need
to get me
a new one.
one problem!
there’s no nsn
for the harness
in the tm.
hey,
these
pmcs cards
are a good
deal! you can
bet on it!
M256A2 Chemical Agent Detector Kit…
the m256a1’s
tm 3-6665-
30
7
-10 will be
updated with a
chapter 4 that
explains lvh
operations.
When the
m256a2
hits the
field, it will
come with a
completely
new
tm.
upgraded
679.54-55.indd
1-2
5/4/09
5:36:16 PM
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