PS Magazine - TB 43-PS-695
PS, The Preventative Maintenance Monthly
ISSUE 695
OCTOBER 2010
22
PS 695
OCT 10
Dear Editor,
Here at the Ft Leonard Wood DOL we see lots of MK 19 machine guns go
through our shop. There are certain problems that seem to constantly crop
up that MK 19 gunners should watch for:
Not protecting rear sight:
M249 Bipod NSN Correction
On Page 17 in PS 693 (Aug 10), we gave you the NSN for a new welded bipod yoke that
replaces the bipod yoke, retaining ring, bipod collar and spring pin on the M249 machine gun.
Unfortunately, we reversed two digits in the NSN. The correct NSN is 1005-01-557-2
54
3.
Editor’s note:
Good MK 19 tips for every operator to mark down. Thanks, Gary.
Loose bolt pawl:
If you can
move the pawl on the face of the
bolt, the screw that is supposed
to hold the pawl in place is loose.
Tell your armorer so he can have
support tighten the screw. If
the screw is not tightened, it
will wallow out the hole it fits in.
Then it’s a major repair.
Broken cocking cams:
For some reason, the cams are
breaking frequently, resulting in
the bolt cocking lever flopping
back and forth. If you pull the
cocking lever back and there
is no click, you probably have
a broken cocking cam. Tell
your armorer.
Worn charging handle slots:
Some of the older MK 19s have
charging handle slots that have become enlarged through use. The charging
handles have too much play, which makes it more difficult to charge the
weapon. Let your armorer know if your MK 19’s charging handles have too
much play. The MK 19 may need to go to depot for overhaul.
Don’t switch secondary
drive levers:
Don’t switch
secondary drive levers between
MK 19s. Your armorer adjusted
the secondary drive lever
specifically for your weapon. If
it’s used on another weapon,
the feed slide adjustment will
be thrown off and your MK 19
will have feeding problems.
The part
that is broken
most often on
the MK 19 is
the rear sight
because gunners
forget to adjust
and protect
it correctly.
Loosen the
sight’s knob to
adjust the sight.
Then once you
have the sight
set, tighten the
knob. If you
don’t, the knob
sticks out where
it can easily be
snapped off.
When you’re through firing,
loosen the knob, put the sight
down flat and tighten the knob.
If the sight’s left sticking up,
count on it being broken off.
Gary Becker
TACOM Maintenance Support
Ft Leonard Wood, MO
MK Down
MK 19 Tips
If lever doesn’t click when you push
it back, cocking cam may be broken.
Bolt pawl turns?
Tell your armorer
FT leonard
wood has some
good tips for
getting the
most out of
your MK 19. So,
listen… and
listen
good!
Don’t switch
secondary drive
levers between
MK 19s
Screw sight knob
all the way in
once sight is set
Store with
sight down
and knob
screwed in
695.22-23.indd
1-2
9/8/10
5:14 PM
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