PS Magazine - TB 43-PS-743

PS, The Preventative Maintenance Monthly

ISSUE 743

OCTOBER 2014
PS Magazine - TB 43-PS-743 - Page 6 of 33
8
PS 743
OCT 14
9
PS 743
OCT 14
C
rewmen, your Stryker’s winch
can help you and your buddies
out of some tricky situations. But
only if the winch pulleys get lubed.
Otherwise, the winch won’t winch.
The pulleys lock up if they aren’t
lubed. Then the winch cable is
damaged by friction as it passes
over the pulleys.
A few pumps of GAA once a
month will keep those pulleys
moving nice and smooth. Lub-
rication of the pulleys is covered
under Item 5 of the monthly PMCS
tables for all Fttings and cables.
When
you’re
Fnished
with
recovery operations, be sure to
leave a little slack in the winch
cable. That keeps the cable from
rubbing against the corner of the
front hatch when it’s opened.
C
rewmen, testing has shown that some 120mm mortar tubes on mortar carrier
(MCV) Strykers are developing stress corrosion cracks. The cracks are appearing
on the portion of the barrel under greatest pressure: between 46 and 51 inches from
the muzzle end of the mortar. Those cracks could cause the mortar tube to rupture,
resulting in severe injury or even death!
No mortar tube failures or injuries have been
reported to date. But all 120mm mortar tubes
in MCV Stryker and double “V” hull MCVVs
need to be visually inspected immediately.
Magnetic particle inspection of mortars has
already started.
Do not Fre any mortar tubes that have stress
cracks. Report them to your repair team right
away. Make sure mortar tubes are clean at all
times because environmental factors, such as
the presence of corrosive chemicals during
Fring, will cause stress corrosion cracks.
TACOM LCMC safety message 14-009 has detailed instructions on how to inspect
your Stryker’s mortar tube. You’ll Fnd the message on the TACOM-Unique Logistics
Support Applications (TULSA) website at:
You’ll need your CAC and Frst-time users must Frst request access.
Questions? Contact Marilou Happley at DSN 786-2016, (586) 282-2016, or email:
marilou.t.happley.civ@mail.mil
Lube
monthly
to keep
winch
pulleys
turning
Leave some slack or
tight winch cable rubs
opened engine hatch
Stryker…
Pulleys Need TLC, Too
M1129A1 MCV,
XM1252 MCVV Strykers…
Check
Mortar
Tubes
for
Stress
Cracks
Hey!
you
forGetTing
Something?
uh, I
don’t
think
so.
hoW ‘bout somE
lube on my WinCh
PuLleys?
it’s that time
of the Month,
Y’know!
Inspect
mortar
tubes for
stress
cracks
Hey, wait
a second!
did you guys
forget
that
you’re s’posed
to check me for
stresS cracKs?
743 08-09.indd
1-2
9/3/14
10:33 AM
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