PS Magazine - TB 43-PS-592

PS, The Preventative Maintenance Monthly

ISSUE 592

MARCH 2002
PS Magazine - TB 43-PS-592 - Page 24 of 32
Inspector
PS 592
MAR 02
46
M240 Machine Gun…
Be Your own
These checks
make sure your
M240 machine
gun is
ready
for battle.
If you find
problems that
can’t
be solved
with
cleaning
and
lubing
, tell
your armorer.
Rear sight:
Binds?
Markings
unreadable?
Safety:
With safety
on FIRE, bolt won’t
move forward when
trigger’s pulled?
Buttstock:
Cracked?
Loose?
Won’t lock
in receiver?
Trigger housing:
Sear won’t raise when tripping lever is
pushed back or won’t fall when trigger is pulled?
Sear
should not
move when trigger’s pulled with safety
set to S.
Sear
should
move with safety set to F.
Sear or
tripping lever worn, burred, chipped, or cracked?
Cocking handle or charging
cable:
Binds or broken?
Rails chipped or burred?
Bipod:
Bent or
cracked? Legs bind or
won’t lock in place?
Gas regulator plug:
Carbon on plug? Is it
set to anything but 1?
Barrel:
Blocked or dirty?
Doesn’t lock securely in
receiver within 2-7 clicks?
Flash suppressor loose,
cracked or dented?
Barrel locking latch:
Weak spring?
Bolt and op rod assembly:
Binds?
Won’t lock in charged position?
Roller binds, won’t depress or
rotate? Carbon in piston? Two or
more strands broken on the same
spring coil or three or more breaks
anywhere on the drive spring?
Cover:
Won’t stay up in two open
positions? Doesn’t latch securely?
Accessory mounting rail nicked or
burred so badly that accessories
can’t be mounted?
592. 46-47 (C)
2/2/02
11:38 AM
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