PS Magazine - TB 43-PS-686

PS, The Preventative Maintenance Monthly

ISSUE 686

JANUARY 2010
PS Magazine - TB 43-PS-686 - Page 14 of 33
24
PS 686
JAN 10
25
PS 686
JAN 10
Dear Editor,
I noticed in PS 679 (Jun 09) that you said to use GMD (grease,
molybdenum disulfide) to lube the MK 19 machine gun.
Actually, TM 9-1010-230-10 says to make LSA-T the first choice to
lube the MK 19. Use GMD only when you can’t get LSA-T. Also, GMD has
one major drawback: If you get it on your uniform, you can’t get it out.
LSA-T is readily available now. You can order it in an 8-oz tube, NSN
One other point: I often see units go to the range without all the
equipment needed to fire their MK 19s. That leads to all kinds of firing
problems. You should always take feed throats, round removal tool,
combination tool, feed slide adjustment tool, and LSA-T to the range. It’s
a good idea for the unit armorer to go, too. He can learn more on the range
than in the arms room.
Gerald Davison
TACOM-RI logistics assistance representative
Ft Riley, KS
The sticker has been assigned NSN 9905-01-573-6847. Each package contains 25 stickers.
Many units still haven’t gotten the poster, smart card or video that details the entire
timing and headspacing procedure. Your pubs clerk can order the poster with DA PAM 750-
98 and the smart card with GTA 09-06-045. Order at least one smart card for every gunner
in your unit so that he can keep the card in his pocket to refer to.
The video can be downloaded at
You will need to use your AKO login and password.
The video is large and takes quite a while to download. You can get a DVD of the video
from your local TACOM-RI logistics assistance representative or Army Learning Center.
Editor’s note:
Good points, Gerry. The main thing to remember is
never
use CLP
on an MK 19. CLP is just not strong enough to do the job and will cause damage
to your MK 19.
WARNING
To prevent damage to parts and/or injury to personnel,
HEADSPACE and TIMING
MUST BE PERFORMED
every time BEFORE FIRING, AFTER ASSEMBLY, and
AFTER BARREL REPLACEMENT.
Use M2 MG Headspace & Timing Gage
NSN 5220-00-535-1217 (PN 5351217)
MK 19 Machine Gun…
Make LSA-T First Choice
M2 Machine
Gun…
Headspace and
Timing Sticker
I’m your first
choice to lube
the mk 19. if
necessary, you
can
use gmd.
but whatever
you do,
don’t
use clp. he’s
too weak.
gee whiz,
I do ok
with
other
weapons.
I just can’t
handle the
mk 19.
armorers, now you
can get stickers
for your m2 machine
guns that warn
gunners they need
to headspace and
time the m2
before
they fire.
The sticker
says…
686.24-25.indd
1-2
11/23/09
2:22:19 PM
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