PS Magazine - TB 43-PS-560
PS, The Preventative Maintenance Monthly
ISSUE 560
JULY 1999
M40/M42-Series Masks . . .
AN/VIC-3 . . .
S
o you put brand new alkaline batteries in your AN/PVS-5C/7A/7B night
vision goggles—and nothing happened.
You pull the batteries out, clean each end
to get off corrosion, clean the goggle termi-
nals, and reinsert the batteries, while making
absolutely sure they are in right. Again, nothing
happens.
Before you turn the goggles in for repair, pull
out the alkaline batteries and try a lithium bat-
tery. If it works, the problem is in the alkaline
battery box.
You’ll still need to get the battery box fixed,
but the lithium battery will keep you in business
to meet your mission needs.
Night Vision Goggles. . .
Do a Switcharoo
Do the same with the other eyelens.
Trap sand
Do this until all the sand has washed
to the center of the eyelens. Trap the
sand with a clean cloth. Turn the mask
over and pull the cloth away. The sand
is gone and the eyelens hasn’t been
scratched.
Turn mask over
Try a lithium battery
Check ear
cushions
did you
say
something,
sarge?
ha ve you
checked the
shape
of your
ear cushions
lately?
46
JUL 99
Add water and swirl
that's
not
the way!
do you want to
blind me
?
i'll
wipe
that
sand
from your
eyelenses.
oo many eyelenses on M40 and M42
masks are ruined because soldiers clean
out sand and dirt from the eyelens rims
with a dry cloth. The cloth drags the
particles across the eyelenses and
scratches the plastic. Eventually you
can’t see through the eyelenses. Blind-
ness is a drawback in the field.
Here’s a better way to clean the
eyelenses.
Turn the mask face down. Put a table-
spoon of water in the center of the
eyelens. Swirl the water around the
eyelens like you are panning for gold.
oo many eardrums
take a beating
because of damaged
ear cushions in the
AN/VIC-3 intercom
system’s CVC
helmets. A broken,
deformed, leaking
or damaged ear
cushion, NSN
5965-01-418-5535, causes not only
poor commo, but also possible hearing
loss.
So be responsible for your own ear
cushions. After all, it’s
your
hearing.
Every time you put that CVC helmet
on, give the ear cushions a good look.
If they’re damaged, get them replaced.
PS 560
47
JUL 99
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