PS Magazine - TB 43-PS-436
PS, The Preventative Maintenance Monthly
ISSUE 436
MARCH 1989
*
Eyeball the bolt's extrActor pin.
If it's sticking up at alL, it's bad And
wiLl cause the bolt to lock up in the
Locking lugs.
*
Feel the Piston ±r burrs. If the
Piston's burred, it's hard to charge.
²Lso, pull back and ±rth on the piston
Assembly's
housing.
It
shouldn't
move. It's OK if the piston rotAtes
slightLy side to side.
Check out piston
for buRrs .±.
or loosenEss
28
*
Make sure the retAining clips on
the takedown, pivot, handguard and
³edtray cover pins are all in place. If a
clip's missing, its pin comes out during
firing.
*
Feel the ´ont sight ±r loosenessµ
¶ook at
the
rear sight ±r hair·ine
crAcks in the sight's two wheeLs. If the
´ont sight moves or the rear sight can't
be adjusted, you haVe no accuracy.
RePort any probLems to your a¸¹orer.
MA² 89
Keeping Regulator Regular
ScraPe oUt the regUlator after every
ºg. If the regUlator gets clogged,
your gun can't f»re. The longer yoU
PUt o¼ the cLeaning, the harDer it is to
clean. If aLL the carbon won't come
oUt,
teLL yoUr a¸morer. He can use
cLeaNiNg soLvent on stubbo½ carbon.
But never Use C¶¾ oN the reguLator.
C¶¾ coats the inside of the reGULator
and makes it imPossible to cLean. The
regUlator must always be comPleteLy
d¸y ±r ¿ring.
Àemember, unLess Áhe regULator is set
eXactLy on ÂOÀM²¶, it's set on ²Ã-
ÄERÅE (M²Æ) .
.. eveN if it's ba¸eLy
o¼ the ÇOÈɲ¶ mark. Make sure the
reguLator's Locked in at ÂOÈM²Ê beË
±re yoU ¿re. Firing on ²ÃÄERÅE
(MÌÆ) wears oUt the M249 Íst.
ma² ³´
µ´
ÎÏ your M249 fires sLow, switch the
regULator to ²ÃÄEÀÅE (M²Æ) ±r
50
¸oUnDs, then switch back to ÂORË
Mж. OÑ jUst
50
rouNDs on ²ÃË
ÄEÀÅE (M²Æ) wiLL bLow oUt ca¸bon
in the gas system. Àetu½ing to ÇORË
M²Ê saves wea¸ anD tear on yoUr gUn.
Disassembly and Cleaning
ÒLways make sUre the boLt is ±rward
be±re yoU Disassemble your M249. If
yoU ±rget, the oPeratiNg rod wiLl
exPLoDe oUt of the receiver when you
take o¼ the bUttstock. Óhat can cost
yoU teeth or aN eye.
Bolt ¶usT be fo·¸rd
befoRe dIs¸sse¶¹ly
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