PS Magazine - JULY 1975
PS, The Preventative Maintenance Monthly
ISSUE 272
JULY 1975
FIREPOWER
QUeSTioN 3.
ls Lowering thE spadE
to tH± ground And tHEn backing.up on
it tHE bEst WAy tO ±mpLacE it?
AnSw±r²
NO² ThAt's nOt A gOOd
³f Y´u
Caµ M¶·cH
th¸¹Gº »¼½s
D¾¿Ll ÀÁÂÃÄÅÆ
ÇÈÉdÈÊg Ë ÌÍÎÏÐ
yÑÒ ÓÔÕ'Ö Ë×ØÙÚÛÜ
KNOW,
ÝÞßàáâ ãmäåæ
çÉèéêë ìí Bî ïð
l
L±
•²³´
.
ñ
,
³Ay²
THE cOrr±ct ³Ay´ is tO LO³Erµ thE
spAdE, gO AhEAd AbOUt
6
f±Et, And thEn
QU±STioN 4ò
¶hEn thE spad± is
BEing Emp·aCEd sh¸¹Ld th± r±tractinG
controL vaLvE handLE bE in RºTR»¼T½
¾¿RM»À »¾D Á¿ÀD ¸r RÂTÃRÄ
Position?
Anów±r
ô
It shouLd BE L±Ft in
¾¿ÅMÆÇ
ƾD
Á¿ÇD
position²
ÁOwEvEr,
tHE tÈbE
wiLL b±
in
th±
tÉAv±Ling position which is rEtrAct±d
fOr thE MÊ07 And Ën bAttEry fOr th±
MÊÊ̲ It sHOuLd bE LEft thErE b±cAus±
in tHis pOsitiOn tH± w±ight Of tH± tubE
HELps dig in tH± spAd±²
InSTRUCtOr
õö
÷ø
A±tlL.²E³Y
scHo´µ!
K±±P
sÍAα
rAis±Î ³H±n nOt iÏ Ðs±² TÑis ÒÓOt±cts
tHE cHrOÔE sÍAα rOÎs frOÕ ÎÖrt in tH±
Air AÏd frOÔ B±iÏg stEPP±Î OÏ By
×Ø-ÙÚÛ1ÜÝ
P±OÍÞ± ÔOÐÏting tѱ V±HicÞ± frOm tH±
B¶·h i¸
u¸¹¶ºk
bAck up AbOUt
ù
fE±t² YOu tHEn usE thE
spAdE ÞikE A BuLLdOzEr bÞAdE tO dig A
HOÞ± intO ³HicH yOU Put tHE spAdE bÈt
nOt tOO dE±pÞy²
ß
tHE sÍAd± Ös nOt fÖrmÞy Ön cOntAct ³ÖtH
•
tѱ ÎÖrt Ön tH± ÑOÞEà ÎO±s tHis r±AÞÞy
mAtt±r
B±cAus±
³H±Ï yOÐ fÖr± tH±
sPAα ³ÖLÞ PusÑ BAck tO mAk± gOOÎ
cOntActá
AnSwúr²
It
mAttErs² ÃnÞEss yOu
HAvE cOmpÞEtE cOntAct, thE sHOck Of
firing cAn dAmAgE thE spAdE, ÞOckOUt
cyLindErs,
sUspEnsiOn
systEm,
fU±Þ
tAnks, Etc²
Anówûr²
¼ÞOsE tHE spAd± HydrAuÞic
â
ã
äåæ
çèéêëìíîçç
ç"ïðñ;òóôõö÷øùúûü syst±m
shutOff vALvE And finisH yOur
missiOn² (ýOtE: THis is An ±m±rg±ncy
prOcEdUrE
bEcAUs±
firÖng
³itHOut
HydrAuÞic ÍrEssurE in tHE spAdE syst±m
cAn
dAmAgE
tHE
sÍAdE²
T±ÞÞ
yOUr
þÿĀ
bAttEry
m±cHAnic bEcAÐs± tH± spAd±
cyÞindEr sHOULd bE r±pLAc±d²)
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