PS Magazine - TB 43-PS-692
PS, The Preventative Maintenance Monthly
ISSUE 692
JULY 2010
8
PS 692
JUL 10
9
PS 692
JUL 10
In the long run, this short-term solution just
makes the job harder. Sure the wheel nut is metal,
but that doesn’t mean it’s indestructible. Enough of
that abuse will damage the wheel nut and maybe
even break off its tabs.
You also take the chance of a slip that’ll hit and
break the valve stem. Then you’ve got a flat tire to
deal with. That’s never a good situation when you’re
out in the boonies.
The right tool to use is the hand hammer, NSN
5120-01-420-8619, that’s part of your howitzer’s BII.
The hammer has a softer brass head that will move
the wheel nut without damaging it.
Just remember, even the hand hammer can cause
damage if you swing it wildly. All it should take is a
few short taps to loosen or tighten the wheel nut.
S
ome operators use whatever’s handy to remove the wheel nut, NSN 5310-01-369-2906,
and wheel when unfolding their M119A2 howitzer. A sledgehammer, metal pipe, claw
hammer, even a big rock—they’ll grab anything they can Fnd to do the job quick and easy.
W
hen preparing to tow your M198 howitzer, a functioning travel lock is a must,
operators. And that means every part of the travel lock pin assembly has to be in
place and ready to use.
Unfortunately, the lock pin, NSN 5315-01-032-7107, is sometimes missing. It’s
normally attached to the pin assembly by a wire rope, NSN 4010-00-829-6321, but
can sometimes get snapped off by brush during cross-country travel.
Don’t try to use either pin assembly to hold the travel lock in place without their
lock pins. No lock pin means the manual control handle, NSN 5340-01-046-4757,
can vibrate loose during towing. If one or both handles fall out, the travel lock can be
damaged or even sheared off.
So, take a look at the travel lock pin assemblies during PMCS. If parts are missing,
get ‘em replaced.
M119A2 Towed Howitzer…
Tap, Tap
BEATS
W
h
a
C
k,
B
a
n
g
!
M198 Towed
Howitzer…
Missing Pin a Problem
Using
wrong
tool can
damage
or break
wheel
nut
A few taps with hand
hammer will tighten
or loosen wheel nut
told’ja that
sledgehammer
would get this
wheel off!
yeah!
but now
that the wheel
nut’s broken,
how’re we
supposed to
get it back on?!
Lock pin missing? Get it replaced
without lock
pins, my travel
lock isn’t going
to last much
longer!
o
w
w
!
692.08-09.indd
1-2
6/1/10
5:42:33 PM
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