PS Magazine - TB 43-PS-722

PS, The Preventative Maintenance Monthly

ISSUE 722

JANUARY 2013
PS Magazine - TB 43-PS-722 - Page 6 of 33
8
9
PS 722
PS 722
JAN 13
Generally, that means using that particular
vehicle’s bore brush, cleaning sleeves, and
CLP. Add in a whole lot of elbow grease and
you’ll get a pretty clean bore.
But
when
it’s
time
to
do
a
borescope
inspection,
those
cleaning
procedures
just
aren’t enough. They can leave behind small
amounts of carbon and dirt that can hide
erosion or pitting inside the bore.
So, immediately before the inspection, follow the
cleaning procedures outlined on Pages 2-1 through 2-2
of TM 9-1000-202-14,
Evaluation of Cannon Tubes
(Feb 99, w/Ch 5, Jan 11).
1.±
Clean the cannon bore using your howitzer’s bore
brush and a cleaning sleeve saturated with RBC (rifle
bore cleaner), NSN 6850-00-224-6658 (1-qt), NSN 6850-
00-224-6663 (1-gal), or NSN 6850-00-249-8029 (5-gal).
2.±
Swab out the bore with a wash of solvent, NSN 6850-
01-472-2721 (1-qt), NSN 6850-01-474-2319 (1-gal), NSN
(5-gal),
or
NSN
(5-gal). Pass the bore brush and cleaning sleeve saturated
with the solvent through the bore, changing out the
cleaning sleeve as necessary until it comes out clean.
3.±
Dry the bore using clean, dry, lint-free cloth or specially
prepared paper wiping towels, NSN 7920-01-368-1622.
Eyeball the interior of the bore, looking for any
damage or erosion to ri±ed and smooth areas.
Appendix A-S in TM 9-1000-202-14 will tell
you exactly what to look for.
Isn’t
M119A2,±M198,±M777A2±Towed±Howitzers;±
M109A6±Paladin…
When
‘Clean’
Isn’t
Clean
Enough!
Crewmen, the
–10 TMs for your
towed howitzers
and M109A6 Paladin
give pretty
specific
instructions on how
to
properly clean
the cannon bore on
the day of and the
day after firing.
Dirt and carbon
can hide damage
to cannon bore
well, that
does it! your
CANNOn bores
are as clean
as I can get
‘em with CLP!
yeah, but
is that
clEan
Enough?
you said
it, howie!
we’ve got a
borescope
inspection
coming up!
When you’re
finished,
apply a light
coat of CLP
to
prevent
corrosion
between
firings.
722 08-09.indd
1-2
12/4/12
2:04 PM
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