PS Magazine - TB 43-PS-675
PS, The Preventative Maintenance Monthly
ISSUE 675
FEBRUARY 2009
24
PS 675
FEB 09
25
PS 675
FEB 09
Dear Editor,
The grip trigger test is a part of the PMCS for the MITAS (modified
improved target acquisition system) on the Stryker. But MITAS often flunks
the test because operators forget the correct setting for the gunner’s
control panel.
The
platform
mode
selector
switch on the gunner’s control
panel must be set to MISSILE
1 or MISSILE 2 before doing
the test. If the panel is left on
LOAD or RAISE/STOW, MITAS
will show a bad grip trigger, even
though there’s nothing wrong with
the trigger. And the next time the
IBIT (integrated built-in test) is
run, a FCS and TU icon will show
during the IBIT, usually LRU codes
2W2 and 1A8.
If this occurs, set the platform mode selector to MISSILE 1 or MISSILE
2 and power down the MITAS system. Then power up and perform the grips
test and IBIT again. The fault should go away. If it doesn’t, tell support.
Forgetting the correct gunner’s control panel setting for the trigger
test can cause the operator and MITAS needless problems. Just remember
MISSILE 1 or 2 for all MITAS systems operations.
SGT Gerald Morton
296th MSB
Ft Lewis, WA
Editor’s note:
It’s so easy to overlook a detail
like the panel setting. Thanks for helping
MITAS operators get a grip on the problem.
Old Batteries
Batteries can be old even
if they’re fresh out of the
box. Batteries that sit on
the shelf for a long time
can develop a “passivation”
crust on their metal plates,
which
prevents
electrons
from passing through the
plates.
Sometimes you can shake
off the crust. Remove the
CLU battery and shake it
vigorously for one minute.
Reinstall the battery and
turn the switch to NIGHT
for both the M98A1 and
M98A2 CLU. If the CLU
keeps
ticking,
give
the
battery another one-minute
shaking and try again. If
three
rounds
of
shaking
don’t stop the clicking, the
battery is probably dead.
If the CLU stops ticking, but the CLU battery indicator lights up, there is hope.
Leave the CLU on for 15 minutes to see if the battery current burns through the
passivation layer. If the indicator goes off, you’re in business.
MITAS…
Passing the Trigger Test
Make sure panel is set to MISSILE 1 or MISSILE 2
but I tell you there’s
nothing wrong with my
mitas grip trigger!
that’s not what
the trigger
test showed.
you did
the test
wrong.
you
were the
one who
flunked!
if none of this
works, you have
a dead battery.
turn it in and
get a new one.
I know I’m
right out of
the box, but
I’ve been
sitting on
that shelf
for
years.
my
time
has
come…
and
gone.
we’ll
shake
some life
back into
you!
I’m afraid
this battery
is a goner.
time to get a
new battery.
gaaa…
assault and
battery!
675.24-25.indd
1-2
12/24/08
9:20:17 AM
SGT G.M.
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