PS Magazine - TB 43-PS-698
PS, The Preventative Maintenance Monthly
ISSUE 698
JANUARY 2011
20
PS 698
JAN 11
21
PS 698
Be careful with the
fber optic cable that runs
between the launcher
and engagement control
station (ECS). It’s easy
to bend the cable’s pins
iF you Force it on. IF you
drag the cable by its
connector, you can pull
the cable’s wiring loose.
Coil the cable around
your hand to pull it.
On the PAC 3
launcher, make sure all
the umbilical cables For
the launching station
are strapped down tight
during weekly PMCS.
IF the cables are leFt
dangling, they can be
ripped loose when the
launcher rotates. That
puts down the whole
launcher.
Do not mix PAC 2 and PAC 3
components on the missile tiedown
hardware. The PAC 3 hardware doesn’t
have the PAC 2’s breakable hex nuts,
which means mixing the hardware can
be unsaFe.
Do not over-torque the hex nuts on the
PAC 2 missile canisters. The hex nuts
should be torqued to 60 lb-Ft and that’s
it. Crews oFten torque the nuts again and
again during crew drills. The nuts break
and can’t hold the missiles in place.
When
you’re
preparing
to
transport the PAC 2 launcher, make
very
sure the torque tube handles
are locked beFore you hit the road. IF
they’re not, the missiles can actually
Fall oFF the launcher during travel.
When you’re climbing on any
oF
the
Patriot
components,
but
particularly
the
launcher,
don’t
use cables as handles. That ruins
many cables. Use the handles on
the outriggers For climbing instead.
Also make sure you don’t step on
the 5A5W15 cable that goes to the
launcher’s electronic module below
circuit breaker 1. It snaps oFF easily.
Never bypass the launcher limit
switches. It may seem convenient to
bypass the switches when they are
bad or out oF adjustment. But iF you
bypass them, you lose the protection
the limit switches provide. IF an
outrigger limit switch is bypassed,
For example, the outrigger could
malFunction and cause the actuator
drive motor to burn out. IF a limit
switch is bad or out oF adjustment,
report it.
AN/MPQ-53 Radar
Whether
you’re
taking
the
radar’s
shroud oFF the radome to operate or putting
the shroud back on at the end oF operations,
make sure all the shroud’s straps are
secured tight. IF the shroud ±ips back down
during operations, it could catch on fre
From the trapped radar waves.
IF you don’t securely strap down the
shroud at the end oF operations, it can
bunch up when you stow the antenna. That
can engage the limit switch and cut oFF
power to the antenna completely. The radar
shelter itselF can also be punctured, which
lets in moisture.
Loop fiber optic cable around your hand to carry it
Check that umbilical cables are strapped down
Don’t mix PAC 2 and PAC 3
mounting hardware
Don’t keep torquing PAC 2
hex nuts or they
will
break!
Make sure
shroud is
secure for
both
operations
and
travel
Lock torque tube
handles for travel
Keep your feet off
5A5W15 cable
Never bypass
limit switch
698.20-21.indd
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12/6/10
11:47 AM
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