PS Magazine - JULY 1984
PS, The Preventative Maintenance Monthly
ISSUE 380
JULY 1984
I
-
Headspace Too Loose
If the NO GO end went in dur-
ing Step
9,
the heaDspace is too
loose. Repeat Steps
10
thrU
±3,
B±T .
.. screw the barreL in one
cLick each time.
Repeat the steps Until the gage fits correctLy (Step
9).
GO enD shoulD fit. NO
GO shouLdn't.
Timing Adjustment
Warning:
CLear ²He gu³ ´efµre y¶u
start.
I.
·eadspace adjustme³t must be cor-
rect. ChecK it.
2²
Retract the bolt Flly anD ease it
fµrward ¸o cocK it.
3³
Retract the boLt just ¹r enougH
to insert the NO ºIRE gage ´et»
ween the barrel extension anD t¼un-
nion bLocK. SLowLy release the
charging handle. Insert the ´eve½
edge of the timing gage against the
barrel notches.
4´
Trip tHe trigger. If the gun
won¾t fire, O¿ so Àr. Go to Step
5µ
If Áhe gun fires skip to Steps
7
thrU
±4¶
YoU've got early ¸imi³gÃ
24
5·
Retrac² tHe ´oLt just enough to
remove the NO ºIRE gage anD inÄ
sert ²he ºIRE gage. SÅowly release
tHe cHarging hanDLe.
6¸
Æepress tHe trigger. If tHe gun
firesÇ timing is OÈ. If it DoesnÉt ÊireË
tHe timing is late.
E±rly/²a³e ´iMiNg
To aDjUs¸ Ìr earLy or La¸e ¸imingÂ
͵llow these stÎps. WARNÏNG: Never
cocK the gu³ wi¸h the bacK pLate oÐÑ.
The driving rod sPri³g can maKe a hoLe
in yoU. The boLt mUst be Ìrward to
remove the back pLate.
¹º
Remove tÒe gage cocK the gU³ and
return ¸he boLt fµrward sLowÓy.
8»
Now remove the bacK pLate.
9µ
TUr³ tÔe timi³g adjUs¸me³t nUt
FLL dow³ Õ¸o le͸).
±¼³
ϳsert the ÖÏRE gage as yoU
did i³ S¸eP
5½
JUL 8
25
±2³
TUr³ tÔe timi³g adjUstme³t nut
Up one click Õto right). ×Ush the
trigger bar up. ContinUe o³e clicØ
at a time. ×Ush the bar after each
cLicK U³tiL the gU³ fires.
±3³
AÍter it fires ¸Ur³ the nUt UP
2
more clicks. Stop at
2!
±4´
Remove the gage, PUt on the back
pLate a³d pULL ¸he b
Ù
oLt to cocK Posi¸ion.
EÚaÚsÚe the boLt ÛorwardÜ
15½
Recheck timi³g with the ÖÏRÝ/NO
ÖÏRÝ gage twice more witÔ ¸he bacK
pLate o³. Ïf it¾s ³o¸ correc¸, do Steps
¹
thrU
±4
o³e more time.
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