PS Magazine - TB 43-PS-579

PS, The Preventative Maintenance Monthly

ISSUE 579

FEBRUARY 2001
PS Magazine - TB 43-PS-579 - Page 23 of 33
PS 579
FEB 01
42
PS 579
FEB 01
43
So, monthly,
you
need to take off
the receiver backplate and check out
the insides.
If it’s dirty, clean the follower guide
with CLP. Wash the receiver with dry
cleaning solvent, wipe it out, and let it
air dry.
Then lightly lube the trigger
assembly and safety detent with CLP.
One thing your gunners can do is to
not load up the firing pin hole, safety
detent, and trigger with CLP.
Those
areas need light lubing—just a few
drops—daily in the field.
If gunners
put on more, it turns into gunk inside
the receiver.
And you’re back to
square one.
Forward assist:
If the forward assist won’t budge, you may not be able to lock
the bolt forward.
So, squirt one shot of CLP in the forward assist port inside the
upper receiver.
Run the forward assist back and forth until it is moving smoothly.
Windage and elevation
knobs:
If the knobs stick,
you can’t adjust the rear sight.
So, put a couple of drops of
CLP on each knob and turn
the knobs until they move
smoothly.
Return them to
their original position.
Buttstock drain hole:
If the hole’s plugged, moisture collects inside the butt-
stock and soon corrosion is chewing up the lower receiver.
So, run a pipe cleaner
through the hole.
Put CLP on
windage and
elevation
knobs and
work them
back and
forth
…as
does
firing
pin
hole
Safety detent
and trigger
need only a
few drops
of CLP…
Forward
assist
needs
one shot
of CLP
A
rmorers, your soldiers can do
everything for their M203 grenade
launchers that TM 9-1010-221-10 tells
them to do, but that won’t be enough.
The M203 won’t fire well unless
you pitch in.
Why? Because
inside
the receiver
is where crud really accumulates.
And gunners aren’t allowed to
clean inside the receiver.
A
storage rack made specifically for the
M240B/M240G machine guns is available with
The NSN is being
added to the additional authorization list (AAL)
in TM 9-1005-313-10. When bare spots show up
after you start using the rack, touch them up with
olive drab enamel, NSN 8010-00-848-9272.
M203 Grenade Launcher.
..
Clean inside
receiver with
dry cleaning
solvent
Run pipe
cleaner
through
drain
hole
579. 40-43 (C)
1/9/01
8:24 PM
Page 3
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