PS Magazine - TB 43-PS-715

PS, The Preventative Maintenance Monthly

ISSUE 715

JUNE 2012
PS Magazine - TB 43-PS-715 - Page 23 of 33
43
PS 715
JUN 12
Linseed Oil Preserves Decking
Constant exposure to the elements causes the wood decking on semitrailers to dry, crack
and splinter. Prevent that damage by spreading boiled linseed oil on the decking as
needed. NSN 8010-00-152-3245 gets a gallon of oil and NSN 8010-00-684-8789 gets five
gallons. Use NSN 8010-00-242-6114 to get a 55-gal drum.
Trailer Tire NSN
To get a tire for the M103- and M116-series ¾-ton trailers, use NSN 2610-01-063-7947.
This tire is also used on the M105A2, M149A2 and M200A1 trailers. Keep this NSN handy
until it’s added to the updated technical manuals for these trailers.
Dear Editor,
Your article on Page 10 in PS 708 (Nov 11) on the importance of making
sure the M119A2’s breech and breech block serial numbers match may
confuse some howitzer units.
The picture of where to
look for the serial number
on the breech has an arrow
pointing to the side of
the breech. The number is
actually on the flat surface
on top of the breech block
lug, near where the hinge pin
is located. The main reason
I point this out is that I
have seen breeches that
have other numbers engraved
on them besides the serial
number. We don’t want
confusion about which is the
serial number and where it is.
James Palmer
TACOM Left Behind
Equipment Specialist
JBLM, WA
M119A2 Howitzer…
Where
to Find
Breech
Block
Serial
Number
Breech block serial number is on top edge of block
yes, we
definitely
don’t
want any
confusion
about
where to
find the
serial
number.
if the howitzer has
already been fired with the
wrong breech block, you’ll
have to order a new block,
cost of about $26,000.
so it’s
important
howitzer
units do
this check
before their
next firing.
just be
sure you
look in
the right
place to
find the
serial
number.
to briefly
repeat what was
in the article,
it’s
important
to
ensure the breech
block and breech
serial numbers
match because
that is the
only
way
to accurately
track how many
rounds the m119a2
has fired and the
life left in the
cannon assembly.
How do yOu
teLl
which
breech block
serial number
is the
right
one? There’s
more
than one
number!
that’s easy!
it’s the one
on the
top
edge
of the
blOck!
Breech block serial number
Breech
serial
number
Breech mechanism
715 42-43.indd
1-2
4/20/12
10:49 AM
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