PS Magazine - TB 43-PS-737
PS, The Preventative Maintenance Monthly
ISSUE 737
APRIL 2014
6
PS 737
APR 14
7
PS 737
APR 14
o
perators, be sure to keep the vacuum release valve on your M119A3 howitzer’s
artillery portable universal battery power supply (APUBS) sealed tight after the
battery cover is installed.
Heavy rain can force water
inside the APUBS through
the vacuum relief valve and
cause a short. That’ll put your
howitzer out of action quick.
Keeping the seal tight and water out of the battery compartment is easy. Just follow
the instructions for the valve that are written right next to it on the battery cover. Turn
the valve clockwise to seal it and counterclockwise to open it.
If you have to open the battery cover for any reason, be careful that no water gets
into the battery compartment.
Questions? Contact the TACOM Field Artillery and Support PSID Fire Control
Team at DSN 786-9048, (586) 282-9048, or send an email to:
usarmy.detroit.tacom.mbx.ilsc-fa-core-team@mail.mil
And when removing or installing CLE equipment, be careful not to bend or twist
cables too much. Make sure all cables are routed correctly to avoid potential pinch
points inside the CLE, like the radio locking bar, cover stay and cover seal.
If your howitzer has a DFCS issue, check out the PMCS and troubleshooting
procedures in TM 9-1025-215-10 and TM 9-1025-215-24&P.
Questions? Contact TACOM’s ±re control team at:
usarmy.detroit.tacom.mbx.ilsc-fa-core-team@mail.mil
Seal vacuum release valve
tight to keep water out of
battery compartment
Don’t Put
DFCS In a
Pinch!
M119A3 Towed Howitzer…
Seal it T
i
g
h
t to Keep Battery R
i
g
h
t
M777A2 Towed Howitzer…
Don’t Put
DFCS In a
Pinch!
what’s the
matter with
you, pal?
somebody forgot
to seal the vacuum
release valve on
my APUBS and now
it’s
shorted out!
crewmen, it’s easy to
pinch or even break the
cables inside your M
777
A2’s
communication location
enclosure (CLE) when you
open or close it.
Damaging the
cables will put
your digital fire
control system
(DFCS) out of
action in a hurry!
Before closing the
CLE cover, make sure
that all cables are
completely inside
the
enclosure and clear
of the CLE cover seal.
Tuck
all
cables
inside
CLE
before
closing
cover
O
u
c
h
!
what
hApPenEd?
you
pinched
some
cables
when you
closed
my CLE!
737 06-07.indd
1-2
3/5/14
5:00 PM
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