PS Magazine - TB 43-PS-426
PS, The Preventative Maintenance Monthly
ISSUE 426
MAY 1988
I'
Nickel-Cadmium Bateries .±²
"'I
I
You can't be jailed fOr neglectIng your bird's nickel-cadmiuR
batteries, but yoU
may wish you were in jaIl if your neglect breeds disaster.
When batterIes are neglected, everybody and everyThing suFers±you, your
bird, your unIt, your ²Ight crews, your support shop, ³ncle Sam.
´t might be sImply a delay in the mission If µe battery fails to starT ¶our bird's
engine.
·r it could be much worse±an In¸
²ight battery explosion.
Here's how to prevent µose kind of
uNhappy experiences.
LOOSE F³L´ER µAPS¶
¹ighten
µem careºlly with veNt plug wrench,
»S» 5120-00¼087¼2969.
»ever use
plIers. ¹hey crack or break plastIc caps.
´OOSE TERM³nA´ SµREWS·
³se torque wrench, »S» 5120-00-117-
4832, and the righT adapter to Tighte½
µem. ¹orque 8¾32 screws to 20¾25 lb¸
iN and 10¾32 screws to 35-50 lb¾in.
But be careºl wheN you're tIghten¿
ing positive teÀiNal screws and sÁds.
i
a wrench touches metal and causes a
shoÂT circuit, you and your equIpment
could suÃer.
40
¸¹Y88
EÄebaLl the tops of cells for cracks aNd
tell¼tale sIgNs of leakage.
ÅLectrolyte
spewed out of an over-filled or cracked
cell ÆÇms a white residue Èat can clog
veÉts,
shoÇtÊcIrcuIt
µe
baTtery
and
cause gassIng and overheatiNg.
Ëse µe A»/PSM¼45 multImeter In
your AV³M »o. 2 tool kit to make the
¸¹Y88
41
electrical leakage test spelled out in
Para 4-9 of µe battery pub.
´f you ÌiNd or suspect leakage fOr aNy
reason
other tÍan loose fIller caps,
remove tÍe battery aNd get It cÍecked
out.
µLOGGED VEnT L³nES¶
Îey
ventilate the battery compartment dur¿
INg ÏightÐ DiscoNnect µe vent hoses aT
µe baTtery end and use low pressure
airÑno more thaN 5 PS´±to make sure
µey're cle
Ò
ar.
VOLTAGE
REGULATOR ADº
J»STMEn¼S½
Get your bIrd's electri¿
cIan to adjust µe voLTage regulator sea¸
sonallÄ. ´t should be done wiµ a mul¿
tImeter iNstead of the volTmeter in µe
bird's cockpit. ´f µe regulator is set too
high, the batterÄ can overheat and lose
eLectrolyTe.
Óemember,
good
battery
mainte¿
nance won't keep you out of JaIl, but it
will help keep your bIrd out of µe maIn¸
tenaNce ÍaNgar and in µe aiÂ.
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