PS Magazine - SEPTEMBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 382
SEPTEMBER 1984
1±
Don't let the rgged look deceive you
wHen you handle tHose heavy baRRels
of youR M2 macHine gun.
The baRRels aRe tougH, but if you
don't pick tHem up and put tHem dowN
easy-like, you'll bang up tHe tHReAds oR
FasH HideR. BanGed ±hReads won't alLow
tHe baRRel to be ²eadspaced and timed
to tHe ReceiveR³
´and tHe baRRel to A buddy wHen you put it on oR take it oµ a t¶Uck oR tRack.
If you Haul it on a tRuck bed, put something undeR it to cusHion tHe tHReads.
WHen you install a baRRel, give it a Right and left twist AfteR you lock it into
the ReceiveR³
If it's loose, get youR aRmoReR on tHe ho¶n. It could ·y o¸ when you ¹R
º
e it.
Good
Timing
Make sure
THe knuRled timing and ad
j
ustment
nut in t»e ReceiveR is supposed to tuRn
alone. ¼f tHe spRing spins witH tHe nut,
it'll aµect tHe timing. TuRn tHe gun in
fOR RepaiR.
½notHeR way to assuRe RigHt¾on tim¿
ing is to keep youR Headspace and tim¿
ing gages unmaRked. EtcHing An ÀD on
tHeÁ witH an etcÂing tool oR puncH will
make buRRs tHat'll fÃul up youR gage
accuRacy.
If you need an ÀD, tag tHÄ gages.
½lso, stoRe tHe gaGes on a boaRd oR
HangeR so tHey won't get accidentally
buRReÅ oR scRatcHed. SmootH's tHe
woRÆ.
56
Only
timing Nut
spins
DO ±²T
mark
.
•
gages!
SEP 84
SEP 84
Spring Ding
·
You've HeaRd it beÇRe, ANd itÈs t¶Ue:
Do
Not
Remove tHe ÉAckplate uNless tHe
bolt is
fRwaRd.
When tHe ÉoÊt is back
tHe dRiving Rod Ënd sp¶inG aRe undeR
lot of teNsion. ¼f yoÌ Remove tHe
backplate witH tHe bolt back, tHe ¶od
and sp¶ing cAn ·y ͸ ANd Ée dAm
ged.
So can you.
ÎeÇRe you ¶emove tHe ÏÐoNt caR¿
t¶idge stop of youR MÑ macHine gUn to
Ïit tHe M¼ÒES t¶aNsmitte¶ and ÎÓÔÕ
Hold tHis thought:
PulÖ tHe belt-Hol×ing paØl piNs out
just ÙR enougH to ¶elease tHe ca¶t¶idge
stop. THen, slide ÚHe piNs back in place.
¼f you pull tHe piNs all the way out,
tHe pawl and spRiNgs will ·y out and
get damageÛ, lost oR both.
Ülso, Ýg tHe ca¶t¶idge stop witÞ you¶
ReceiveR's seRial numbeR and stoRe it till
you'Re tHr with M¼ÒES (Multipleßnte-
à
á
â
ãäå
gRated ÒaseR Engagement System)
:³;.´1
RemOve
t¶aiNing.
stOp,
æemçndeR: WhetHeR you use blaèk o¶
Lag it!
livé ammo, tHe bolt sØitcH must be set
±²
__
,±
ÏoR eitHeR RigHtêoR leftëHanded ìed .
57
¼f it is not set ¶igHt, bolt and coveR
components will be daíaged.
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