PS Magazine - TB 43-PS-719
PS, The Preventative Maintenance Monthly
ISSUE 719
OCTOBER 2012
40
PS 719
OCT 12
Dear Editor,
Through our experience keeping the Patriots at Ft Bliss primed for action,
we’ve come up with a few ways to ensure the engagement control station’s
(ECS) air conditioning stays A-OK:
Run one A/C unit at a time.
The ECS has two A/C units,
but running them both at the
same time actually hurts their
effectiveness.
Running
both
causes back pressure to build
up in the van, which means the
units work harder and against
each another. A very good way
to help the units last is to run
the units one at a time. Just
alternate them every two hours.
Check that condensation
is draining out of the A/C
units at least daily.
If condensation can’t properly
drain, the A/C will eventually
shut down and that shuts down
the ECS. If any kind of work has
been done on the A/C, make
sure the elbow fittings where the
drain hoses connect point down.
If
they
don’t,
condensation
can’t drain properly. For the
same reason, check that the
drain hoses aren’t kinked.
A
small number of bad M249 machine gun Fring pins have gotten into the Feld. The
bad pins may not protrude completely through the bolt or may protrude too far, causing
probable misFres.
Armorers need to check all their
replacement Fring pins for a CAGE code
of 19204 on their packages. If these pins
are dated on or before December 2011,
they should be demilled.
But any time you replace an M249
Fring pin, do the protrusion check on
Page 3-54 of TM 9-1005-201-23&P
(Jun 02). That way you know you’re
installing a good Fring pin.
Questions? Contact TACOM’s Andre Pilgrim at DSN 786-1256, (586) 282-1256, or
email:
andre.v.pilgrim.civ@mail.mil
CAGE 19204-PN:9348395
PIN: FIRING
MOP: M31 - 8/10
1 EA
Gage
M249 Machine
Gun…
Bad Firing Pins
Patriot Missile
System…
Keep ECS A/C A-OK
Look for CAGE 19204 and a date
on or before December, 2011
Do protrusion check when replacing firing pin
Place
machine
gun on floor
in vertical
position with
bolt forward
and locked
Insert
firing pin
protrusion
gage in
barrel until
bottom end
of gage seats
firmly against
bolt face
there are some
bad
firing pins
around.
this won’t
hurt, will
it, doc?
we need to
do a
firing pin
protrusion check
on you.
If condensation drain hose
stops flowing, blow it out
hey! we don’t
need
both
A/C
units running.
one at a
time will Do
just
fine!
Listen to these
coOl ideas
from Ft
Bliss on how to keep
Your ECS
cOol!
719 40-41.indd
1-2
9/4/12
2:42 PM
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