PS Magazine - TB 43-PS-679
PS, The Preventative Maintenance Monthly
ISSUE 679
JUNE 2009
8
PS 679
JUN 09
9
PS 679
JUN 09
Dear Half-Mast,
A lot of the newer drivers of M113-series vehicles don’t realize that the
power plant access door has a combat lock. So when it’s time to do PMCS,
the driver can’t figure out why the access door won’t open.
Time is wasted when a mechanic is called in to fix a non-existent problem.
Since time is money, can you let drivers know when and how to engage and
disengage the combat lock?
MAJ C.G.
G
et too close to the cooling fan blades
on your howitzer or ammo carrier
and they’ll make Fnger food out of
your hands. That’s why fan blade
screens should
always
be used during
maintenance on a running engine.
The
screens,
NSN 2510-01-247-
2976, keep Fngers, hands and anything
else from being pulled into the blades
as you check for leaky hoses, pipes and
Fttings.
Each
screen
has
hooks
and
a
thumbscrew
and
locknut
to
secure
it to the fan shroud. The screens
should be used only during scheduled
maintenance, though. Remove them
before regular vehicle operation or the
engine will overheat.
As a reminder to use the screens, put
a warning decal, NSN 7690-01-244-
9849, on both fan tower shrouds. You’ll
need general purpose cleaner, NSN
7930-00-515-2477, to clean the shrouds
before applying the decals.
Dear Major C.G.,
You bet, Sir!
Part of the problem is that the combat lock
is so well hidden. If you didn’t know it was
there, you’d never Fnd it.
Drivers, you’ll Fnd the lock behind the
cannon plugs above the accelerator pedal in
the driver’s compartment. To engage the lock,
rotate the handle to the vertical position. To
disengage, rotate the combat lock handle to
the horizontal position.
The
combat
lock should
always
be
engaged during operations and while parked
in the motorpool. That protects the engine
compartment from unauthorized access.
M113-Series
FOV…
Searching for
the Combat Lock
M109-Series SP Howitzers, M992A2 Ammo Carrier…
Fan Blades
Love
Fingers
L
Combat
lock is
above
accelerator
pedal and
behind
cannon
plugs
I don’t
get it!
I tried
everything
to get that
engine panel
open!
I released
the combat
lock!
what happened
to phillips?
he didn’t
use fan
blade
screens
when he was
working on
a paladin.
heard
he lost
a couple
fingers!
Screens keep fngers out o± ±ans
Put
warning
decal
on ±an
shroud
howja
do it?
679.08-09.indd
1-2
5/4/09
5:25:46 PM
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