PS Magazine - TB 43-PS-590
PS, The Preventative Maintenance Monthly
ISSUE 590
JANUARY 2002
So put this book down, unit armorers, and check every single pair of NVGs in
your arms room. There will be a sticker on each one that tells you when the 180-day
check was last done. Turn in to DS those that need the check. Start a tracking sys-
tem that will alert you a week before each NVG needs to be tested.
The second complaint that DS
repairmen have is that you users
and armorers are forgetting the
resolution test with the TS-
4348/UV test set, NSN 6625-01-
323-9584. You cannot measure
resolution accurately without
using this test set!
Without accurate resolution,
your goggles put you in danger
every time you use them, by not
allowing you to see what you
need to see. So get the TS-
4348/UV and do the test often–at
least every 45 days.
PS 590
47
The housing of your NVG is filled
with dry nitrogen. Purging is the
process of removing moisture that
might have gotten into your NVG
housing and of replacing the nitrogen
that has leaked out.
There is one mandatory time when
every NVG must be purged. That is
at the 180-day resolution test per-
formed by direct support (DS) main-
tenance. Unfortunately, it seems that
many of you unit-level armorers are
ignoring that 180-day test!
The number one complaint of DS NVG repairmen is that NVGs are not being
turned in for the 180-day test.
And guess what? If the test is not done, your NVGs are NMC!
Some DS guys have taken it upon themselves to track your unit’s NVGs and alert
you when the 180-day test is needed. But that’s not their job! It’s your job to keep
track of when the test is needed.
PS 590
JAN 02
46
The
word is
purge!
Oooh!
I need
purging!
Use
TS-4348/UV
test set
to do the
resolution
test
hey!
it’s been
more
than 180
days! You gonna
send us to DS to
test us or what?
Ahh,
not now.
I’ve got
no time
today.
AN/PVS-7B, AN/PVS-7D…
TS-4348/UV
TEST SET, ELEK SYS
What word does
not
appear in TM 11-
5855-262-10-2, the
operator and unit
maintenance manual
for the AN/PVS-7B
and -7D night vision
goggles (NVGs)…
…but shows up
50 times
in TM
11-5855-262-23&P-2,
the direct support
manual?
590. 46-49 (C)
11/26/01
2:02 PM
Page 1
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