PS Magazine - MAY 1983
PS, The Preventative Maintenance Monthly
ISSUE 366
MAY 1983
i
I
I
, I
For 8V71-Series Engine± .².
Long L±fe
and
ProspeR±ty
NOT FR ME
-±
-±²if mY ³eCHS
co tl nU ´ µh¶(r 6·¸u¹º
-
»¼Pp½¾G
PRCTIcES!±
A lot of diesel engines in MLLO-
series howitzers aNd M578 RecoveRy
vehicles aRe being C±obbereD With heat
prostration!
Too much hea² kills more engines
iN these vehic±es than anything else.
•
GroundhOppIng
wIthOut a
coolant ±upply³
•
´peratIng
wIthout
enOugh
cooLant In the radIator±³
•
ShUtdown wIthout a cOoLµoff
per¶od·
GroUNdhopping a water³cooled die-
sel engiNe like the 8V71´seRies with-
oUt a cooµant supply is murder¶ Even
shor·³¸e¹ (a few minutesº) ground-
hopping without Coolant wil± kill the
engiNe»
1¿
So, be sure to make all the hook´ups
Called for in youR groUndhopping Pro¼
CedUre.
It shoulD never happen, bu² some
opeRators Don't make sure ½here¾s
pleNty of Coolan½ in the 2 RaD¿atoRs.
Fill ¾em both up to about À inCh
below ²he bottom rim of the neCk, Run
the eNgine foR 5 miNu½es and CheCK
agaiN. ADd more coo±ant ¿f neCessaRy.
ÁeeP an eye on ½he ÂÃo±aĽ ½eÅp
gage and ½he lÃwÆengineÆCÃo±an½
Warning ±ight, iÇ youR vehiC±e has Ãne»
Just donÈt run the ½hing withoUt
enoUgh coolant, ÉÁ?
Êow when you're reaDy ½o shut
Down fÃr the day, don¾½ foRge½ to give
yoUr engine a Coo±³off» I½¾s not human,
for sure, but i½ neeDs a Cool³down to
±ive.
Ëun it ¿N neÌtRa± a½ Í000ÎÀ200 ËÏÐ
until the temp gage RÑaChes À70´Í85
degrees (about 2Ò5 minutes)»
Then let ½he engine idle a½ 550³600
ËÓM ÇÃr a shÃrt time beÇÃRe shut-
down»
Ôo i½ right and "±ive ±ong aÄd
PRosperÕ wil± apPly ½o youR engine foR
a long t¿me»
M¸¸0A2 SP H
o
±.¹
-
± ²³
·:´kiµ¶
±
_²³
·V'#²
,
_²
._BoRes±ght Target Changes
·
´
³
µ
Ö
×Ø
If your howitzer has haD ÐÙÉ 9Ò2350Ú304Ò50Ò5 aPPl¿eD, you need to Change
the boresigh² taRget you¾re Ìs¿ng»
ÛheCk ou½ Óage 2³80 Ãf ÜM 9ÒÝ350Ò304ÆÀ0, ÞÝ, Which shows ½he ½arge½.
º±e the±e
new d»men±ion±
•
The butter¼Ly ½O ½he le¼t ±hO¾Ld be ¿Àved Ou½
1
inCh
ÁÀ ½ÂÃt »t'± 26% iNche± ¼rom the pL¾mb lIne.
•
Ähe bu½ter¼Åy ½o the Righ½ ±ÂOuLd be ¿Oved Ou½ ¸ inCh
±O ½Âat »tƱ 253/Ç inche± ¼rom ½he pÅumb Line¹
ÈomBat VehiCLe± .ɹ
Bull±sH oN Ground Gu±des
Any time yoU reverse a track vehi-
C±e or drive it ¿n a tight ß±aCe, you need
.ÀÀ BÁÂ ÃÄ
5ÅÆÇLÈA
ÉÊaD
Ë2ÌÍ30b
ÎÏÐÑ'
ÒÓÔÕÖ×Ø
ÙÚ
2/-60±
gRound guides.
Ùi½hout them, yoUr vehicle ¿s àike a
bull in a China shopáout´of³plaCe aNd
±ooking for a chanCe to CaUse a lot of
Nalsâ is in Tã 2Àä30å, Ðanua± for the
ÜraCked Ûombat VehiC±e Ôriver, and
FM 2ͳ60, Visual Signalsæ
damage.
Everything you need to know about
If yoU don¾t use ground gu¿Des,
you¾Re oN the wRong side of your unit's
SÉÏç That Can cost yoU, espeCia±ày if
using groUnd guides, ¿nCluding the you tear up some eqUipment.
pRoßeR hand, flag and f±ashl¿ght sig³
Ólay it safeèuse grounD guidesé
17
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