PS Magazine - TB 43-PS-742
PS, The Preventative Maintenance Monthly
ISSUE 742
SEPTEMBER 2014
5
PS 742
SEP 14
M2/M3-Series
Bradleys…
fired
up for
firing
FIRED
UP FOR
FIRING
Your Bradley’s
M242 automatic
gun will be
fired up for
firing
if
you
remember a few
pointers…
good grief, you
haven’t fired me in
months!
I need a
thorough PMCS!
and how about a
little gmd to get
everything moving
again?
After
firing, clean
the deck.
Release
tension on
the ammo
chutes.
Do the
pre-firing
checks in
Appendix
b-72 in FM
3-20.21,
Heavy
Brigade
Combat Team
Gunnery.
Make
sure the
retaining
rings
for the
straight
drive shaft
haven’t
come off.
if brass is
left on the
deck, it can
get stuck in
the turret
ring…
… and
damage
my
turret ring
bearings!
after the
M242 is
installed
and the ammo
chutes are
hooked up, you
need to release
the tension on
the chutes.
They provide
a good double-
check after the
PMCS is finished
that the M242
is ready for
firing.
No retaining
rings mean the
drive shaft
can work out.
it’s a good
idea to
replace the
retaining
rings during
annual
services to
ensure they’re
up to the job.
Back off forwarder until
feed chutes slacken
Otherwise, the feeder
can’t work properly and
the M242 will
misfire.
Removing live rounds
from the feeder can be
dangerous.
Do a complete
PMCS
before
you fire.
Your M242 has
probably gone a
long time since
being fired.
it’s
especially important
to
lube the gun with GMD.
GMD is a heavy-duty lube that can
handle the
heat
the M242 puts out.
Some units
substitute
CLP.
A very
bad idea.
CLP is
too
weak
for
the job and
the M242
can be
damaged.
CLP should be
used
only
on and in
the barrel, except
for the barrel’s
locking lugs and
support bearings.
They need a light
coat of me, gmd.
Wear
gloves
when
you apply gmd.
it’s a good idea to
keep it off your
skin because it can
cause dermatitis.
So it needs to
be thoroughly
checked out
before
you leave
the motor pool.
While doing PMCS, make sure the M242 and TOW launcher are set
to 0 (zerO) elevation. Otherwise, the gun and launcher will be out
of sync and that can
damage
the launcher’s drive gears.
Man! that was some pmcs
job you did on me. I am
fired up
for firing! let’s
hit the road. you ready?
I’m ready!
hoOAH!
I guess
PMCS
really
does
work!
742 04-05.indd
1-2
7/21/14
4:54 PM
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