PS Magazine - TB 43-PS-734

PS, The Preventative Maintenance Monthly

ISSUE 734

JANUARY 2014
PS Magazine - TB 43-PS-734 - Page 23 of 33
42
PS 734
JAN 14
43
PS 734
JAN 14
t
he HORN OFF button for the compartment control module that’s part of the CHEMBIO
collective protection equipment is going away. The collective protective equipment is
used with systems like the Patriot and TACFIRE artillery protective entrances.
So when you order a new
compartment
control
module,
NSN 4240-01-057-3378, it will
come
without
a
HORN
OFF
button. Instead the module will
have an e-switch push button
that’s connected to a small PC
board on the rear of the front
panel. The Army hasn’t decided
if this fix is permanent. But for at
least the time being, look for the
e-switch.
Dear Editor,
We have a couple of tips for Patriot units that can help keep their antenna
mast groups (AMG) standing tall.
Clean feed horn plugs at least quarterly.
Corrosion can form on the metal
parts of the plugs, especially when
the
antennas
are
left
erected
for long periods. If the corrosion
becomes too bad, the feed horns
can end up stuck to the antennas.
Then you must take off the whole
antenna to remove the feed horn.
That big job can be avoided if you
just clean the plugs quarterly with
alcohol and a rag
-or a wire brush
if the corrosion is stubborn.
Take off both pneumatic pump covers before
you power up the AMG.
It’s easy to forget them. But if
you do, the covers trap the heat.
The heat can become so intense
that the plastic guards over the
fans melt. Then the whole motor can
overheat, which means it has to be
replaced. Just remember to put the
covers back on after you shut down
the AMG and it has had a chance to
cool. They keep out sand and rain.
CW2 Michael Smith
SGT Joshua Rogers
SPC Nicholas Griffin
2/43rd ADA
Ft Bliss, TX
Editor’s note:
That’s good advice indeed!
Thanks.
M120/M121 Mortar System…
Collective Protection Equipment…
Store MSK Legs
Before
Travel
Compartment Control Module Changing Buttons
Patriot Missile System…
these tips
have kept me
standing tall.
I’m ready for
action!
Remember to remove pneumatic
pump covers before operating AMG
Clean feed
horn plugs
at least
quarterly
to prevent
corrosion
HORN OFF button…
…is being replaced by e-switch
Remove guide rail legs
before
travel
The mortar stowage
kit (MSK) for the
M120/M121 mortar
has guide rail legs
that extend toward
the ground to guide
the mortar during
emplacement.
Unfortunately,
the legs are often
damaged
when the MSK
is shipped or towed…
And replacements
are
expensive
and
hard to get.
Any time you’re going
to ship or transport
the MSK, first
remove
the guide rail legs
and
put them in the BII box.
Otherwise, your MSK
soon won’t have any
legs to stand on.
734 42-43.indd
1-2
11/25/13
4:18 PM
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