PS Magazine - TB 43-PS-670

PS, The Preventative Maintenance Monthly

ISSUE 670

SEPTEMBER 2008
PS Magazine - TB 43-PS-670 - Page 6 of 33
8
PS 670
SEP 08
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 failure.
M1068, M577A2 Quick Release Pin
The NSN for the commander’s platform assembly quick release pin, listed as Item 17 of
Fig 239 in TM 9-2350-261-24P, is no longer available. Order the replacement pin with NSN
5315-01-452-8840, PN MS17984C650, and CAGE 80205.
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.
M1059 Smoke Generator Strainer
Use NSN 4330-01-485-9879 to get a new strainer assembly for your M1059 smoke
generator carrier. The NSN shown as Item 21 in Fig 375 of TM 9-2350-261-24P on EM
0040 is wrong.
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 counter-
clockwise until the brace is held
Frmly against the ratchet handle.
Then, turn the extractor so that the
brace is horizontal and facing away
from the rear door when it’s stored
in the cab rack. That way, you avoid
harness damage altogether.
Safe Storage for
Copperhead Extractor
crewmen, if you get careless
with how you store the
copperhead extractor, your
m109-series howitzer could be
left with a nasty bite.
here’s the
right
way
to stow the
extractor…
Never
stow extractor backwards…
…or with brace in vertical position
Stow extractor like this
what’s
that?
sounds
like
somebody
didn’t
properly
stow your
copperhead
extractor!
M109-Series
SP Howitzers…
670.08-09.indd
1-2
7/31/08
3:49:41 PM
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