PS Magazine - TB 43-PS-723

PS, The Preventative Maintenance Monthly

ISSUE 723

FEBRUARY 2013
PS Magazine - TB 43-PS-723 - Page 6 of 33
8
PS 723
FEB 13
9
PS 723
FEB 13
M
echanics, missing or worn-out travel lock friction linings can do a lot of damage
to your howitzer’s cannon tube. So check the linings and replace them if necessary.
After all, linings are easier and cheaper to replace than cannon tubes!
The linings cushion the tube when
it’s in the travel lock, keeping metal
from rubbing and scraping on metal.
To replace the linings you’ll need
two of the same lining, NSN 2530-
01-060-7229,
for
M109A2-A5s.
The M109A6 takes a bottom lining,
NSN 2530-01-354-0400, and a top
lining, NSN 2530-01-354-0401.
Remove
the
old
linings and
adhesive residue with a wire brush.
Apply new adhesive, NSN 8040-01-
484-0416, to the replacement linings
using an acid swabbing brush, NSN
Install the new linings and leave the travel lock open and unused for one hour so
the adhesive can dry.
Block 5
is for the end item serial
number. You’ll Fnd it listed on the
data plate at the end of the trail.
C
rewmen, when you Fll out the DA
±orm 2408-4,
Weapon Record Data,
after
Fring your M119A2 howitzer, remember
this: Every data block is critical!
The equivalent full charge (E±C) count
(blocks 10e-h) is important because it
tracks the life span of the cannon and
helps to ensure your safety.
But an accurate E±C count won’t do
you any good if it can’t be tracked back
to the right howitzer. That’s where blocks
1, 5 and 7 come in.
Block 1
is for the cannon tube’s serial
number. You’ll Fnd this number inscribed
on the end of the tube, visible from the
inside of the breech ring.
Block 7
is for the cannon serial
number. You’ll Fnd it inscribed on
the right side of the breech ring.
And don’t forget to keep the gun card updated electronically at the TACOM-Unique
Logistics Support Applications (TULSA) website:
M109-Series SP Howitzers…
Gun Tube Needs FriCtion Linings
M119A1 Towed Howitzer…
A PlaCe for
Every
Number
and
Every
Number in
its PlaCe
Y
e
Oo
u
c
H
!
what’s
wrong?
no linings on my
travel lock are
killin’
my gun tube!
man, we’ve
fired
a lot
of shells
today!
yeah, now let’s
make sure we
enter ‘em all on
the gun card!
Linings damaged or missing? Replace ‘em!
723 08-09.indd
1-2
12/31/12
2:18 PM
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