PS Magazine - TB 43-PS-682
PS, The Preventative Maintenance Monthly
ISSUE 682
SEPTEMBER 2009
10
PS 682
SEP 09
H
igh-pressure water is a big-time air flter killer, drivers.
When you wash your MLRS
carrier, it’s easy to Force water
into the flter canister where
it soaks the element. A water-
clogged flter won’t let air
through to the engine. Pretty
soon, no more engine!
Check the air flter aFter each
washing. IF the flter is damp,
let it air dry thoroughly beFore
using the vehicle.
After you remove the bolt and carrier assembly from the track assembly, turn the
safety handle while watching the safety pawl. When the pawl is in the SAFE position, it
should be about level with the aft end of the ±ring pin pawl.
As the safety handle is rotated
to the FIRE position, the aft end
of the safety pawl should drop
and be distinctly lower than the
±ring pin pawl. A bad safety
pawl will not drop below the
±ring pin pawl and may even rise
above it.
If
you
±nd
any
defective
safety pawls, do a Category
II PQDR and request a CREDIT
rather
than
a
REPLACEMENT.
After you submit a PQDR, you
will receive a replacement credit
and disposition instructions for
the defective pawl.
See
TACOM
Maintenance
Advisory
09-013
for
more
information.
Contract No: W52H09-07-D-0140
CAGE: 0EFR2
Check
for
Bad
M242
Pawl
M2/M3-Series Bradley…
Check
for
Bad
M242
Pawl
MLRS Carrier…
It’s
Not
a Water Filter!
if a safety pawl has
already been installed,
check it like this…
more than
500 bad m242
automatic gun
safety pawls have
been distributed
to the field.
the defective
pawls prevent
the firing
pin going
forward,
which means no
firing.
any safety pawls in their
original packaging marked
like this are defective…
Tab too long (0.47 in or 12.2mm)
Correct Safety Pawl (PN 12524384)
Correct length (0.20 in or 5.3mm)
Does safety pawl drop below ±ring pin pawl?
FORE
Safety pawl
Firing pin pawl
AFT
Unwanted
material on tab
Defective
Safety
Pawl
Check air ±lter
for moisture
safety pawls that
have already been
removed from
their packages
can be checked by
measuring the tang
on their bottom
center.
a good pawl’s tang
measures 0.20 inch
(5.3mm) fore to aft.
a bad pawl’s tang
measures 0.4
7
inch
(12.2mm) fore to aft.
questions? contact
tacom-ri’s kevin collins
at dsn
7
93-
7
961, (309)
7
82-
7
961, or email:
kevin.collins10@us.army.mil
682.10-11.indd
1-2
7/21/09
6:10:19 PM
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