PS Magazine - SEPTEMBER 1978
PS, The Preventative Maintenance Monthly
ISSUE 310
SEPTEMBER 1978
NOW
HERe1S
/
'
A
BIG MUsT
th± rig²³
LiN´-uP OF
bol.
µA¶ p·¶¸¹n:
The best way to
tell if a gas piston is dirty or
Fuled by carbon is to take it out
and look. Even clean it.
If the pistoN slides ±ee up and
down the cyLinder, it's fairLy
cLean.
EyebaLl the holes of the piston
and see if they match the hoLes of
the gaS cylinder² If they're Lined
up, even partiaLLy, that's good.
Bad carbon buiLdUP wilL mis-
match the ho³es²
fº»¼½¾ ¿ºÀÁ
WHen YoU c³ean
the ´o³t, be sUre tO PUt tHe µring
Pin ´acK r¶gHt (if YoU get the
gUide on right, the Pin'LL be
right)²
The Long end goes toward tHe
·ce of the boLt (the short end ¶s
where the guide rides).
If you instaLL th¸ sHort e¹d
ºrst, the firing pin won't go
tHrough the h»le in the bolt ·ce.
¼ou won't get a round o½¾ Bad
news Fr the gun and maybe ¿r
you.
Get the Àiring Pin and the
guide in right the Árst time .Â
ÂvÃÄ
ÅaÆaÇ
ÇÈÄÃÉÊÅ
wÈÇÇ dË
ÌÃ jËÍÎ
ÏÐ
cËmÍÈÄaÑËÄ
ÒËËÇ ÓËÔ
The big point: If you a³Low carÃ
bon to build uP to the Point where
Ät corrodes thÅ piston, you're
gonna have a tough job getting
the Piston oUtÆ ¼ou'll also have a
tough cLeaning job.
16
.
!J
-
.
ÕÖ×»ØÙ¶:
BarrÇLs issUed Fr a sPeciÈc gUn sHoULd not Ée changed Êom
gun to gUnË
I
ÚWÛ ÜaÔÝÇÞ aÄd ÜËß
·
]
)
i
±*'
l
±
) j
0±²³
O
_±²
Uo±C²
=
.
I
Ìact is, the
2
barReLs and the
ÍoLt in a gun shouLd staY togetheR
Fr liÎe ².
. oR untiL a Íolt or ÍarreL
is no longer serviCeable.
Ïew replacement ÉarreLs or
ÉoLts shouLd Ée headspaced when
paired with used Éolts oR ÍarreLs.
Ðeadspace on a used replaceÃ
ment barReL and a used bolt is anÃ
otheR storÑ The ÍaRreL and bolt
can tear each otheR Up.
Òhich means, interchanging
used bolts and ÍarRels is not reÓ
commended. The
2
barReLs and
the Íolt on a gun kind of get used
to eacH other, wearing out the
same oLd chips and bangs at a
slow pace. Òhereas, with a
switch, ÍoLt aÔd Éarrel quickLy
make a bunch oÎ new chips and
Éangs. ÏaturaLLÕ You stiLl have
the oLd damage Ö×Ö and the comÃ
Íination maY be just enough to
Put a ÍoLt or baRReL down²
ØoÙ when you Remove a Éarrel
or Éolt FR cLeaning oR whatever,
tag it with the serial numÍer oÎ
the gun it came Úom.
Ðave your support check headÃ
space periodicaLlÛÜ
Back to Top Back to Top
