PS Magazine - TB 43-PS-689
PS, The Preventative Maintenance Monthly
ISSUE 689
APRIL 2010
6
PS 689
APR 10
7
PS 689
APR 10
Dear Editor,
During overhaul of AVLBs at Anniston Army Depot, we’re finding that the
overhead cylinder cap pin and the tongue cylinder cap pin on the boom-
outrigger aren’t being lubed.
Most of the pins we see have seized up in the cylinders. They’re not only
hard to remove, but by the time we get them out, both pins are damaged and
have to be replaced.
The overhead cylinder cap pin, NSN 5340-01-120-8562, costs nearly
$650. The tongue cylinder cap pin, NSN 3040-01-120-8561, is another
$400. So replacing them gets pretty expensive.
A lot of cost and hard
work could be avoided if
crewmen
would
remember
to lube the pins quarterly
with GAA. The four grease
fittings (two for each pin)
are hidden by the armor
covers
when
the
boom-
outrigger
is
retracted.
That’s why they’re so often
overlooked.
Can you remind crews to
extend the boom-outrigger
and lube all four of the
fittings during PMCS?
Gunny Waters
HME Mechanic
Anniston Army Depot, AL
Editor’s note:
We won’t
try to interfere with that
suggestion! Good job!
Once installed, the setscrew is
flush with the armor plate, eliminating
the interference problem.
Ted Krieger
BAE Systems
York, PA
3.
Raise the TOW launcher to its maximum elevation. Watch closely to see if
the two screws hit. If they don’t, stop here. If they do, continue to Step 4.
4.
Remove the
3
/
8-in screw at the fourth position from the front of the
TOW launcher. Replace it with setscrew, NSN 5305-00-724-5888.
Coat the setscrew threads with sealing compound, NSN 8030-01-014-
5869, to hold it in place.
Editor’s note:
You bet,
Sir.
Con-
sider them reminded!
Raise TOW launcher to maximum
elevation and check screws for rubbing
Replace 4th screw from front
of TOW launcher with setscrew
AVLB…
Bm-Outri±er Pins N²d
l
ub
e
The two lube points here…
…and inside here can be lubed
only
with boom-outrigger extended
well, that takes
care of your lubing
for today!
wait a
minute!
you
didn’t extend
my boom-
outrigger!
there’s
more
stuff to
lube
in
there!
689.06-07.indd
1-2
3/2/10
5:08:27 PM
Mr. T.K.
Mr. G.W.
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