PS Magazine - TB 43-PS-593
PS, The Preventative Maintenance Monthly
ISSUE 593
APRIL 2002
PS 593
APR 02
55
range,
five
feet!
when
was
the
last time PM was
done on that
rangefinder?
“While you’re cleaning the case, look
for damage. Damaged areas on the case
may indicate the MELIOS has suffered
damage, too. Don’t forget to look over
the shoulder strap. A cut on the strap
could lead to a lost MELIOS.”
If you think doing preventive
maintenance on the AN/PVS-6
night vision device does the job
for your Mini Eyesafe Laser
Infrared Observation Set
(MELIOS), too, think again…
“The
most neglected
MELIOS PM
area is the
carrying case
…But dirt that
resides here
soon moves
its address
to the
MELIOS.”
first, use a
dry
cloth
to remove
loose
debris.
Take a close
look at the
objective lens,
laser window
and eyepiece
lens for dirt,
cracks and
scratches.
“For
tougher
jobs, a
wet
cloth
and a
mild
detergent
can be
used, but make
sure the MELIOS is
removed
before
you begin. Don’t
put it back
until
the case is dry.”
“Next, look at
everything!
the
housing,
mode switch knob,
reticle control
knob diopter ring,
lens cap,
eyeshield
assembly,
neck strap
and
lanyard.”
“Your MELIOS
uses two types of
batteries
. The TM
has the word
on both.”
“Finally, look over
the
C/VAM
(Compass
/
Vertical Angle
Measurement).
Clean off any dust
with a dry cloth.”
“Depending upon your mission, you might have the
BA-6516/U,
lithium battery,
or the
BB-516/U,
nickel-cadmium battery.
Each type of battery
requires special handling and disposal.”
“Look at the lanyard on the battery cap
for cuts. Check the battery compartment for
warping, corrosion, dirt and debris. Clean dirt and
debris from the compartment with a dry cloth. Look
at the battery cap o-ring for cuts and nicks.”
“Check the
housing mode
switch, declination
adjustment push
buttons and
the housing
for damage.”
“To clean these glass areas, rotate
the lens cap away from the objective
lens and laser window. Then remove
the eyeshield plug from the eyeshield.
Take a dry lens cleaning tissue, NSN
6640-00-393-2090, and add a drop of
lens cleaning compound, NSN 6850-01-
076-9656.
Now lightly and slowly wipe the lens,
but
only one complete stroke!
More
than one stroke brings dirt back over
the glass and leads to scratches.
After one stroke, throw the tissue
away. If the glass is
not clean,
do it
all again, but each time use a
new
lens tissue.
“The area on the
MELIOS where PM
must be done
just right
is
the
MLRF
(Melios Laser
Range Finder).”
Clean
these areas
with a dry
cloth and a
light touch.
C/VAM
mode
switch
AN/PVS-6 MELIOS…
Here are a few tips
to get you started!
…The MELIOS needs some
special PM all its own.
Once you’re clear
on how to handle
them, check the
charge date.
Read that info in
TM 11-5860-202-12
before
you work
with the batteries.
“Make sure the knobs aren’t loose,
the lens cap and eyeshield assembly
aren’t cracked, and the neck strap
and lanyard have no cuts.”
Declination
adjustment
push buttons
593. 54-55 (C)
3/3/02
2:01 PM
Page 1
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