PS Magazine - SEPTEMBER 1980
PS, The Preventative Maintenance Monthly
ISSUE 334
SEPTEMBER 1980
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The cooling systEm of the M109-series howitzers is so small you Can't
afford to make mIstakes.
Unless you do the righ± ±hing, your engine will
overheat and you risk cracked
heAds, scored cYl²nderS or
burned-out turbo bearings.
'I.
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.-±
²³
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PREVENTION OF ENGINE OVERHEATING DO:
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A. DO MAINTAIN PROPER COOLANT AND LUBRICaNT
LEVELS±
B² DO SHIFT TO a LOWER TRANSMISSION GEAR
RANGE WHEN ENGINE RPM IS LESS THAN
1725´
C, DO RUN ENGINE fIVE MINUTES aT
1000
RPM
PRIOR TO SHUTDOWN. WHEN COOLANT
TEMPERATURE IS aBOVE
±80'
F²
NSN
769²-²³-²49-³77³
(BLack ±etters-WhitE Background)
PREVENTION OF ENGINE OVeRHEaTING DON'T³
A² DON´T OPERATE ENGINE AT IDLE fOR MORE
THAN TEN MINUTESµ SET HAND THROTTLE At
FaST IDLE
(1000
RPM)¶
B² DON´T BLOCK ENGINE AIR INTAKE GRILLS \TH
CAMOUFLaGE OR OTHER MATERIALS²
C. DON·T HOLD VEHICLE ON GRADE USING
ACCELERaTOR¸
NSN
769²-²´-²59-4³4´
(ReD ±eTters²whiTe Backg³ou´d)
Battery MoRniNg SickNess
batteries in your ML09³
µ¶=:
serIes howitzer act sick In the morning
lIke they had been up all night?
Well maybe they have.
´ots of drivers stop their engines by
pullIng out on the Fuel shut-off coNtrol
handle. Then they leave the vehicle
with the master switch Oµ¶
Whatever elec±rical circuits are Oµ
wheR ±hat happens pull current from
the bat±erIes· The amount o¸ current
may be small but it is contInuous, hour
after hour.
¹ou wInd up wi±h sick ba±teriesº
maybe even dead ones.
To keep this from happening, go
through a»
µ
s±eps in vehIcle shut¼
down the way it shows you on page 2³
43 oF your TM 9-2350³2½7³L¾µ¿
¶¶
Àf you skip s±ep 7ÁTurn off
MÂÃTÄÅ ÃWÀTÆHÁÇour batteries
caN be draiNed by any or all of ±hese
circuits:
Èuel pumps,
radios and o±her
commo equipment, personnel heater,
flLE
. "!
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I-±²
.³:_´µ¶·1
@ ®
·O¸'¹ ºKIp º¹»p 7¼
¹U½¾ ¹HA¹ mAº¹»½
º¿I¹CH OfF!
·¸¹º»
,D"
bilge pumps, ventIlatioN blower,
inside dome lights and vehicle ou±sIde
ligh±s, particularly low power ones
that wÉll not be noticed and shut off.
To master battery sIckness, turn off
±he master swI±chÊ
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