PS Magazine - TB 43-PS-566
PS, The Preventative Maintenance Monthly
ISSUE 566
JANUARY 2000
f your M224 mortars sit for months
in the arms room unnoticed and
uncared for, they eventually stop work-
ing. Lack of lubrication causes mov-
ing parts to bind and then freeze. Then
when it’s finally time to fire, the M224s
give you the Big Freeze.
To prevent the Big Freeze, pay at-
tention to lubing, mortarmen and ar-
morers. Of course, follow the lubing
instructions beginning in Work Pack-
age 17 in TM 9-1010-223-10 (Sep 98).
But give the bipod extra attention—it
needs it.
Lube the bipod’s unpainted parts
weekly with general purpose lubricant
M224 Mortar . . .
Dear Half-Mast,
How do you mount the AN/TVS-
5 night sight on the MK 19 machine
gun? We can’t find anything in the
MK 19 TMs on this.
1LT R.R.
Dear Lieutenant R.R.,
Rarely will you find mounting
information for a night sight or
aiming light in the TMs for the rifle
or machine gun it’s mounted on.
Mounting info is always found in the
TMs for the sight or light.
For example, mounting info for the
AN/TVS-5 mount, NSN 5855-01-045-
5482, is found on Page 2-8 of the
AN/TVS-5’s TM 11-5855-214-23&P.
If the night sight or aiming light
TM is not listed in Appendix A of the
weapon’s TM, look for it in DA Pam
25-30,
Consolidated Index of Army
Publications and Blank Forms
.
Test the M7 baseplate for 360
°
rota-
tion and the M8 baseplate latch for
smooth operation. If they bind, lube
them with GPL.
Pull the collar shock absorber assem-
bly back and release it. It should
return slowly and smoothly. If it
doesn’t, support needs to clean and
lube it.
than
1
/
8
turn without the bipod respond-
ing. Something’s wrong.
Weekly, lube the firing mechanism
with LAW through the fitting on the
top of the handle. Lube the trigger and
firing selector, then work the trigger
back and forth until it moves freely. If
the trigger still binds, support needs to
look at it.
Pull collar back and
release to check recoil
Put GPL on unpainted surfaces weekly
Make sure trigger doesn’t bind
you've
got to
know
where
to
look
for mounting
info.
(GPL). Fully extend the left leg and
run the traversing, cross leveling
and elevation mechanisms through
their full range so you can get at
all unpainted areas.
If any of these mechanisms
bind, the bipod needs to go to
support. Only support can
clean and lube them.
Check hand
wheels for
binding
and bipod
response
Support also needs to look at the
handwheels if they can be turned more
forget
about
me and i
won't be
ready
when you
need me.
Small Arms . . .
Mounting Lights
and Sights
PS 566
49
JAN 00
PS 566
48
JAN 00
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