PS Magazine - TB 43-PS-600
PS, The Preventative Maintenance Monthly
ISSUE 600
NOVEMBER 2002
PS 600
NOV 02
9
M992A2 Ammo Carrier…
NEW HEATER NEEDS MOD
T
hat new A-20 Global personnel heater,
NSN 2540-01-396-2826, will need a few
modifications before you install it in an
M992A2 ammo carrier, mechanics.
The existing fuel pump doesn’t provide
enough pressure for the new heater. Also,
the personnel heater cradle assembly
doesn’t allow enough clearance to install
the new heater.
Modification instructions and a list of
parts you’ll need are found on Pages 3-22
through 3-25 of TB 43-0001-62-8 (Jan
99). If you need a copy of the pages, see
your local TACOM logistics assistance
representative or write to MSG Half-Mast.
PS 600
NOV 02
8
M109-Series SP Howitzers…
C
rewmen, there’s only one right way to stow the Copperhead extractor in your
M109-series howitzer.
If you store it backwards, or with the brace in the vertical position, the brace
bangs into the wiring harness that powers the slip ring contact arms. Banging wears
away the harness cover and leads to arcing and electrical problems.
The same problems occur when the brace isn’t tightened in place, even if the
extractor is stowed properly. Vibration shifts the brace around until it snags the
wiring harness.
I need a little
work before I’ll
fit in your ammo
carrier!
Slide the brace forward on
the extractor shaft until it
touches the end of the ratchet
handle. Turn the drive nut on
the shaft end counterclockwise
until the brace is held firmly
against the ratchet handle.
Then, turn the extractor so
that the brace is horizontal and
facing away from the rear door
when stored in the cab rack.
That way, you avoid harness
damage altogether.
Here’s the
right
way
to stow the
extractor…
uh-oh.
another
copperhead
extractor
stowed
back-
wards.
what th-!?
what happened
to the turret
power?!
Stow extractor
like this
Never stow extractor
backwards…
…or with brace in
vertical position
600. 08-09 (C)
9/23/02
11:04 AM
Page 1
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