PS Magazine - TB 43-PS-704

PS, The Preventative Maintenance Monthly

ISSUE 704

JULY 2011
PS Magazine - TB 43-PS-704 - Page 23 of 33
43
PS 704
JUL 11
S
ome armorers are using too much muscle when they install the rail kit on the
M240B machine gun. As a result, the operating rod binds in the gas tube.
Here’s how to stay out of that bind:
Put a drop of sealing compound, NSN 8030-01-499-3589, on the threads of the
two long screws for the rail body to help them stay tight.
Install the two screws and tighten them with your Fngers. Then use a
5
/
32
-in hex
wrench to tighten the front screw no more than three complete turns. Tighten the rear
screw
1
/
4
turn.
±unction test the M240B. If the op rod binds, back off both
screws
1
/
4
turn. ±unction test again and continue to back off
the screws
1
/
4
turn until the op rod moves freely.
•±
aiming±circle±transit,±
±
•±
access±cover,±
±
•±
lamp±extractor,±
±
•±
instrument±light,±
±
•±
tarpaulin,±
±
•±
plumb±bob±assembly,±
±
•±
fire±control±assembly±tripod,±
±
•±
incandescent±lamp,±
±
•±
TM±9-1290-262-10±
± and±TM±9-1290-262-HR
Turn in Unserviceable
Aiming Circles
Small Arms…
Turn in Unserviceable
Aiming Circles
M240B
Machine
Gun…
Don’t Over-tighten Rails
Don’t overtighten!
when you
turn in an
aiming circle,
remember to
include these
items…
but the
army is not
buying new
ones.
but…
why!?
why
do you
have
to go?
it’s for the
best! I’m going
to
help
other
army units.
I don’t understand!
don’t go!
the army is
running short
of working
aiming circles.
why are they
running out?
because there is an
increasing demand for
aiming circles!
let me
explain.
so the only way to meet
the increasing demand is
to repair ones that don’t
work and get them back
to the field.
that’s why units
need to turn in
unserviceable aiming
circles immediately.
to get shipping
instructions for
unserviceables, contact
tacom’s brendan mccann
at dsn
7
86-9065,(586)
282-9065, or email:
brendan.mccann1@
us.army.mil
order a
replacement m2a2
aiming circle with nsn
66
7
5-01-06
7
-068
7
.
due to the
shortage, the
army can’t offer
a direct exchange
replacement.
704.42-43.indd
1-2
5/26/11
7:23 PM
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