PS Magazine - TB 43-PS-425
PS, The Preventative Maintenance Monthly
ISSUE 425
APRIL 1988
out Three clicks below The 300-meTer mark, jusT like iT says in Para 4 on Page 53 in
the ±10 ²M and Para 2 on Page 2±5 in the ±23&P/2.
But it's a diferent sTory FOr
Army Ml6A2's.
²heir elev³
aTion knobs should botTom out
aT The 300´meter mark.
... out and will not pivot µeely. PosiTion
elevatioN knob back slightly To iTs lasT
whole click so the rear sighT base is under
tension oF tHe bearing ball and helical
spring (iTems ¶¶ and 12 page 3±·0).
¸ow
¹
rotaTe The elevaTion Knob CLockwise tHree
clicksº
²he 300 meTer mark should aline
with The mark »n the receiver. IF THe 300 .
..
... moved). ¼nob should be posiTioned on
iTs last wHole clickº
¸ow, roTaTE lower por³
tion oF elevaTion k½ob clockwise Three clic¾s.
²ighTen index screw. Do noT atTempT To
remove THe index screw. ²his is an inTer¿
mediaTe ÀuNction.
IT
At
CTION (CO nTER-CLOCKWISE).
tHE ELEVATION KNOB SHOUlD STOP
ClICKS
THE 300-METER
MARK± THE REAR SIGHT SHOULD BE All THE WAY DOWN ON THE lAST
WHOlE "ClICK² BEFoRE iT BOT³OMS OUT´ THIS IS CaLLED MECHANICAL
ZERO ElEVATION FOR THE REAR SIGHTµ IF YOUR RANGE SCAlE WIlL NOT
lINE UP IN THE ABOVE MANNER, AN ARMORER WIlL BE REQUIRED TO
ADJUST THE RANGE SCAlE
¶
FOR YOU·
20
APR 88
M±49 Machine GuN .²²
Armorers Check
Firing Pin
Gaging the M249's Firing pin is now
your jobÁ armorers.
²hat means every TiÂe yoU change a
Firing pin you do The gaging procedure
on Pages 3±53 Thru 3±5· in ²M 9±¶005Ã
-±.,/ ²³
20 Ä´ 23&P.
_´µ ¶
..± In Para 2 on Page 2-5 in the -23& -P/2,
change tHe fifth sentence to: "(Mar²nes only:
Now, rotate tHe eLevation knob clockwise
tHree clicks.)" ³³³
´±µ And cHange th²s sEntence to: "(Marines
only: Now, rotate loweR portion of elevation
knob cLockwise three cl²cks.)¶
In Para
³
on Page 53 in tHe -10 (tHe
zeroing procedure's for tHe Army, too ),
tHe second sentence sHould say· ¸THe
elevation knob should s¹op its clicks at
tHe 300-meter markº¶
IF yoUr MÅ6A2's
elevaTion knob
doesn'T boTTom oUT aT The 300±meTer
mark, yoUr armorer can ad jUsT The range
scale's index screw.
IF ThaT doesn'T FÆx the scale, arÂorers,
TUR in The riFle To DS. Çever remove The
index screw.
APR88
21
²here's one slighT
change.
²he gage
does noT have a FÈaT
end as STep 3 shows.
IT has a sTeppedÉor
noTchedÊËnd.
IF The Firing pin's
good, iT will push The
gage's movable rod
iNTo
The
sTepped
area.
IF iT doesn'T
push The rod That Far
or pushes iT pasT The
Good
No »ood
Wrong
¼²gHt
No Good
sTepped area, replace The Firing piN.
ÌS¸ 5220Í0ű1·Äη732 briNgs The
gage. You're auThorized 2 gages FOr
every Ï5 machine guns.
DS shoUld
conTinUe To TesT The Firing pins uNTil yoU
receive The gages.
Make a noTe uNTil ²M 9±¶005Ð20ϱ
23&P is chaNged.
·
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