PS Magazine - TB 43-PS-743

PS, The Preventative Maintenance Monthly

ISSUE 743

OCTOBER 2014
PS Magazine - TB 43-PS-743 - Page 21 of 33
38
PS 743
39
PS 743
OCT 14
Easy with the eight launcher doors.
If you jerk the doors open or slam
them shut, the door rods break. Then
you can’t keep the door open. Open
the doors without over-muscling them.
Lock the rod in place to keep the door
locked open so the wind can’t slam it
shut. When you’re done, release the rod
and carefully shut the door.
Don’t bypass limit switches.
Limit switches can take a beating during travel and
then they stop working. But if you bypass limit switches to keep operating, you cause
safety problems: Outriggers overextend and break or outriggers won’t stabilize the
launcher correctly. That could get somebody killed. If a limit switch has stopped
working, report it ASAP so it can be Fxed.
Protect the launcher actuator covers…and order
extras.
The covers are ±imsy and break easily. Handle
them with care. Take them off every few months and clean
under them. Some units zip-tie them on to keep them from
disappearing. But you’ll still need to order extras with NSN
1420-01-354-9685. They’ll probably wear out in six months.
S
ome units are reporting that their new M2A1 machine guns are Fring sluggishly.
If your M2A1 just doesn’t have any get-up-and-go, energize it like this:
Make
sure
the
preservative
packing oil is completely removed
and
the
weapon
is
lubed
like
it
says in TM 9-1005-347-10. If the
packing oil is left on or the weapon
isn’t lubed, the weapon will Fre
sluggishly.
That’s
why
it’s
so
important to do the -23&P’s Service
Upon Receipt on new M2A1s before
they go to the Feld.
But if you’ve cleaned and lubed your
M2A1
completely
and
it’s
still
Fring
poorly, the problem may be that the buffer
discs on the back plate are saturated. To
check for this, repairmen should remove
the disks following the procedure in WP
0017 of the -23&P. Replace wet disks
When reassembling the back plate,
make
sure
there’s
no
in-and-out
movement of the recoil mechanism
buffer. You may need to add an extra
disk if it’s loose.
If that still doesn’t Fx sluggish
Fring, repairmen should check and
adjust the M2A1’s headspace and
timing like it says in WP 0032 and
WP 0033 of the -23&P.
I’ve got a bad
limit switch. I’m
not doing anything
unTil you Get it
fixed. Otherwise,
I’m not safe!
Jerking or slamming launcher doors breaks door rods
Hold on
there!
Be careful
raising the
outriggers
in cold
weather.
if the pads freeze to the ground, they
can break when the legs are lifted.
Follow the deicing procedure in WP 015
7
in TM 9-1440-1600-10 (Dec 04, w/Ch 9,
Sep 13) before lifting the outriggers.
M2A1 Machine Guns…
CURE SLUGGISH FIRING
Backplate discs saturated?
Replace ‘em!
I just came
From the Factory.
I need this
packing oil
cleaned off
and then a
goOd lube
job before
I’m ready
to fire.
I’m
stilL
having FiriNG
PROBlems. BetTer get
my headspace and
timing cHeckEd.
What’s
WrOng
wiTh You?
You’re
branD new
and you
harDly
firE!
New
Guns
NeEd Lubing,
too, y’know!
743 38-39.indd
1-2
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