PS Magazine - DECEMBER 1972
PS, The Preventative Maintenance Monthly
1972 SERIES, ISSUE 241
DECEMBER 1972
When you have co replaCe any of the
Leaf springs, FSN 5360-824±0522, put In a
whOle new set if you've gOt 'em. How²
eveR, If yOU have to mix oLd and new
springs, pUt the new springs on the out²
side of the paCk. Keep old, undamaged
spRings ³o Use in Case you Can´t geT new
springs.
When you pUt in new springs use as
many as possibµe ³O Complete the paCk
with a minimUm of 50 µeaf spRIngs¶
·he vent hole in the obtURatoR spIndµe
has ³o be kept open. So, daiµy afteR OpeR²
atiOn, put the vent Cleaning tool, FSN
4933¸601±9667
(60¹9667),
Completely
thRougº the ven» and »wist it CloC¼wi½e
untiL the vent is Clean.
YOu »he¾ Run »ºe PRiMeR sea» Cleani¾g
bRusº¿ FSN 4933±730±7À8Á
Â7Á07Ã8ÁÄ,
tºROuGº »ºe hoµe baC¼ and fOR»º a Coupµe
of tiMes¶ Åse Rifµe bORe CµeaneR if yOu
have Æo, but Ma¼e suRe Çou Ge» eveRy±
6
after firing.
SInCe the oiµs
and the solvents
used tO Clean the Bore are Èot coo gooD
for the obtuRator, It's a good idea to mop
up any exCess so they don't foRm a pUd²
dle in ContaCt with the obtUrator for long
peRiods.
Érass is ÊN and steel is ËÌ·: ·hat's
»he news on what kInd of primer CaR²
tRidge ³o use. Any of the brass Case types
aRe ËK, inCluding ÍKÀ5 ÎOd
l
or Íod 2,
oR Í82Ï Ðteel Case ÍKÃ5 ÍoD 4 ContainÑ
eRs sºoUµd be used onµy in an emergenCy
sinCe »hey sºoRten the lIfe of the ob³uRaÒ
ÌnLess yoUr prImer ChÓmBer Is ÔeÕt
CleanÖ CrUD wILL BUILD UÕ, ÓÈD the prImer
wIll BInd oR stICÔ× ÊØ chis hÓpÕeÈs, tÙe eXÚ
tra forCe needed cÛ pULL oUt the primer
aØter fIring wILL Beat UÕÜ yÛUr extraCtor
anD retaInIng ÕInÝ So CLeaÈ the ÞhamBer
wItß the prImer ÞhamBer reamer, FSà
4933±2á6±6129. StICÔ the reamer aâ fÓr Óâ
it'll go Into tÙe ChamBer anD rÛtate It Øast
to LOosen the pÛãDer ØÛUlIÈä.
ÉreeCh Cam aDjUstment
·
has tÛ Be
CheCked when any oÈe oØ these hÓâ Been
ChangeD or repLaCeD:
breech opening cam
bReechblock
cam hingE pin
±OllE±s
Keep the CLearanCes and adjustments
foR the breeCh meChanism operating Cam
1"±
_±²³
_
´µ
.²_³,---´µ'
at the fIguRes shown on pages 423å424 of
¶¶¶¶¶
··¸L¹º»
CA
¼
½
¾
¿I
À
Á½
À
d
Â
Á
Ã
tÁ
Ä
N
Å
t
Æ
P
Ç
Èu
.
n
É
G
Ê
E±
Ë
æh 4 (Jan 69) to ·Í 9Ò2350ç217Ò20 (Jan
æam spring tensIoÈ mUst Be helD tÛ è
65). Êf nOt, youéLL geE Øast wear and poså
InChes. ÊØ it's coo LOose, the BreeChBLoCk
si êëe damage to paRts of the breeCh BloCk
anD hIt someì
meChanism.
Êt's easí co sÔIp the moUnî CrÓDLe
ïðrIÈäâ ãheÈ youñre DoIng íoUr
qUarterLy LUò, BUt doÈ'tó See Note
ô5 In õË öå2350åá÷7å12 øJÓÈ 72)ù
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