PS Magazine - TB 43-PS-712

PS, The Preventative Maintenance Monthly

ISSUE 712

MARCH 2012
PS Magazine - TB 43-PS-712 - Page 22 of 32
41
PS 712
MAR 12
Editor’s note:
An excellent suggestion, gentlemen. The procedure for replacing
the brake hose is in WP 0045 00 of TM 9-1015-252-34 (Aug 06, w/Ch 1, Feb 08).
Dear Editor,
While performing scheduled services, we’ve noticed that the M119A2’s
brake hose, NSN 4720-01-344-6034, is badly rusted about 80 percent
of the time. Those rusty hoses can easily burst during brake tests and normal
operation.
We recommend that operators keep a close eye on this brake hose and
that it also be checked
during
every
service.
It’s also a good idea to
make sure the drain plugs,
NSN
5365-01-488-
7429, and access cover
gasket, NSN 9320-01-
343-1778, are in good
condition.
The
brake
hose
is
easy
to
reach.
Just
open
the
right-hand
(curbside)
access
cover,
PN
12591232,
on the underside of the
trail frame. Then use a
flashlight to look at the
brake
hose
inside
the
frame
chamber.
If
it’s
rusty, get the brake hose
replaced right away.
Wilfried Heitzer
Jochen Rankel
Michael Schwabe
Peter Kohler
Gerhard Scherm
Hans-Juergen Pirner
Maintenance Activity Vilseck, Germany
M119A2 Towed Howitzer…
Burst Brakes
a Real
Bummer
Remove access cover from
underside of trail frame
Use flashlight to check brake hose for rust
I’ve
got
no
brakes!
look
out!
D
aily lubing of the saddle bearing surfaces on your M119A2 howitzer is wasted effort if
you don’t clean them properly first, operators.
It’s easy to remember to clean the bottom surfaces. They face up, so they’re in plain
sight. It’s the top surfaces—the ones that face down—that are usually forgotten.
Dirt, sand and oil collect there, too. If you don’t clean them off, the combination acts
like sandpaper. Soon, those smooth metal surfaces are scratched, pitted and covered with
corrosion. That leads to damaged saddle pads which will make your howitzer NMC.
Use a clean cloth to wipe off all of the surfaces. You’ll have to get down on your hands
and knees to make sure the top surfaces are clean.
When the gunk is gone, cover all the surfaces—top and bottom—with a light coat of
M119A2 Towed
Howitzer…
Cleaning
First
Prevents
s
addle
s
ores
Clean top surfaces…
…and bottom surfaces
before lubing with CLP
tarnation!
saddle sores tain’t
nothin’ you wanna
deal with!
712 40-41.indd
1-2
1/31/12
10:35 AM
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