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Specialproblemsinmaintenanceand
operationarecausedbyunusualconditions
suchasextremesinheat,coldandhumidity,
hlghaltitude,saltwater,anddustyorsandy
worksites,Whenoperatingundersuch
conditions,speciaIprecautionsmustbe
takentopreventmachinedamage,minimize
wear,andavoidcomponentdeterioration.
■ExtremeCold
hperiodsofextremecold,theprobIemsof
freezedamage、inadequatelubricationand
batteryfailuremaybecomeparticularly
troubIesome.WiththeonsetofverycoId
weather,itisadvisabIeto"winterize"the
machinebyservicingthecooHngsystemand
switchingtotheIubricantsrecommendedfor
cddweatherusage.FolIowthe
recommendationsbdowwhenthemachine
mustbeoperatedinverycoIdconditions.
1.Topreventfreezedamagetothecooling
systemandcrackingoftheengineblock
orhead,drainandflushthecooling
system,
Cleantheradiatorexterior,making
certaintheairpassagesthroughthecore
andthecoolingfinsarefreeofforeign
matter.
Refi"thecoo]ingsystem,addingan
antifreezesoIutionrecommendedbythe
enginemanufacturerinanamountand
strengthapPropriatetotheanticipated
temperatures.Acorrosioninhibitoris
recommended.
Neveruseachromaticbasecorrosion
inhibitorwhenthecoolantcontains
ethyIenegIycol.UseonIynon‑chromatic
baseinhibitors.
lnspectthethermostat,clamps,
hosesandradiatorcorefor
condition,
Replaceorrepairanycooling
componentfoundtobedefective、
2.Condensationinthefueltank
contaminatesthefuelsupplywithwater,
whichcanfreezeinthefuelIinesand
MAINTENANCE
4‑11UNUSUALOPERATiNGCONDITIONS
radiator
P「oper
system
4‑27
blockthefuelflowtotheengine.To
minimizethispossibility、keepthetankas
fuHasispracticalduringcoldweather.
ThismayentailrefiIlingthetankmore
frequentlythanusual,butthe
inconvenienceissmaIIcomparedto
clearingabIockedfuelline、
IfwatershouIdbenoticedinthefueI
suppIy,drainthetankandrefilIitwith
uncontaminatedfueI
3.Lubricatethemachinewiththeiubricants
recommendedforcoIdweatheroperation
intheLubricationSection,Ifnecessary,
changetheengineoilandother
lubricantsinordertoconformtothe
recommendations.
4,Thebatteryismorelikelytosustain
freezedamageifnotkeptfuliycharged
becauseitselectrolytewiIIfreezeata
highertemperaturethanthatinafu[ly
chargedbattery.Becertaintheba廿eryis
chargingwhentheengineisrunningand
useanexternalchargertorestorefull
chargewhenthemachineisnotbeing
operated.
Thebatterycandischargeifsnoworice
shortcircuitstheterminals.Keepthe
ba廿erypostsandcableconnectorsclean
anddry.
Removeanycorrosionwithasolutionof
sodaandwater.
Duringextremelycoldweather,itis
advisab[etoremoveandstorethebattery
inaheatedareawhenthemachineisto
remainidleovernightorforanyextended
period.
t■CAUTION
Wateraddedtotheba廿erycanfreeze
beforeitmixeswiththeelectrolyte.
Duringverycoldweather,addwaterto
thebatteryjustpriorto,orduring
operationofthemachine.Ifthe
machineisnottoberun,watermaybe
addedifanexternalchargeris
connectedtotheba廿eツ.
UNUSUAL
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