PS Magazine - TB 43-PS-568
PS, The Preventative Maintenance Monthly
ISSUE 568
MARCH 2000
PS 568
47
46
ome NBC NCOs have a valuable
piece of test equipment sitting in their
storage cabinets doing nothing but col-
lecting cobwebs. It’s the M41 Protec-
tion Assessment Test System (PATS).
The PATS will tell you with great
accuracy if a mask fits right. But you’ve
got to use it.
M41 Protection Assessment Test System . . .
Remember, every member of your
unit must be checked at least annually
for mask fit. When a new soldier ar-
rives, give him the PATS test—don’t
go by the mask size he wore at his last
unit. They may have made a mistake.
If you don’t have TM 3-4240-349-
12&P, get it. It has PATS operating
instructions and NSNs. Your pubs clerk
can order it for you.
The most important PATS rule is to
use only reagent
grade isopropyl
alcohol, NSN 6810-
01-382-2904. PATS
needs the purest
alcohol possible.
Drug store alcohol
clogs its optic
system. Then the
PATS must be sent
out for repair.
But be careful.
Alcohol that pure is
very flammable.
Remove the sear housing correctly
.
If you remove the housing with the
sear set to F, the sear comes apart and
things like the spring can be lost. With
the sear set to F, rotate the housing 90
°
to the first click. Push the switch to S
and remove the housing.
Leave the adjusting screw on the
back of the bolt assembly alone
.
Messing with it messes up your MK
19’s timing and could cause it to not
fire.
Set to F,
rotate
90
°
, then
set to S
The flash suppressor is supposed
to be slightly loose
. If you or your
armorer tighten or stake the suppres-
sor, your MK 19 flunks inspection.
Do not tighten or stake flash suppressor
got all
that? I hope
so, for
my
sake.
i’m not
doing
anyone any
good just
sitting
here.
Leave adjusting screw alone!
i see
it's time for
your
annual
checkup
!
Use only reagent
grade isopropyl
alcohol for testing
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