PS Magazine - TB 43-PS-677
PS, The Preventative Maintenance Monthly
ISSUE 677
APRIL 2009
27
PS 677
APR 09
Cleaning—
Keep the center aisle inside the
radar compartment swept clean. Otherwise, dust
accumulates and is sucked into the electronics,
where it causes problems. Keep dirt out by
keeping the door shut as much as possible.
Weekly, wipe clean the IFF cabinet if your
maintenance of±cer approves. If it becomes
clogged with dirt, its circuit cards can overheat.
During semiannual maintenance, remove the
IFF from the radar, take out its circuit cards,
and blow out the IFF with low-pressure air.
Never use a water hose above wheel level on
the radar trailer. If you forget, water shoots into
expensive electronics and shoots up your unit’s
repair bills.
Radiating—
Before traversing, make sure all doors are shut tight. If you forget
even one door, it can get caught on something and bend. That ruins the electro-
magnetic interference (EMI) shield.
Also double-check that the covers for the
comparator assembly and antenna have been
removed. If a cover’s left on, radio waves are
trapped and stuff like the wave guide window
gets cooked.
More cables—
Use two hands with the J1,
J2, and J3 cables. They are too heavy to put on
or take off with one hand without damaging
wiring. Use one hand to support the cable
and take the weight off the connector. Use
the other hand to screw the connector on or
off. Pull the connector straight off and lay
the cable on the ground. Don’t drop it or you
could damage the connector.
Support cable with
one hand while
working connector
on or off
Keep center aisle swept clean
Make sure doors are
shut before traversing
Remove
comparator
and antenna
covers before
radiating
this
looks
like the
place,
connie.
right,
half-
mast.
are you
sure
about this,
connie? I was planning
to
change the transmission
fluid in my hmmwv tonight.
c’mon,
half-mast!
you can’t spend
all
your time in
the motor pool.
who knows? a
little
historical
enlightenment
might do you
good.
The
REAL
fa
of the
ROMAN EMPiRE
677.26-27.indd
1-2
2/24/09
5:09:16 PM
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