MAINTENANCE
UNUSUAL
5、Speciaiattentionmustbegivento
hydraulicoilduringverycoldweather.
ヤ}CAUTlON
the
BEFOREattemptinganyworking
operations,warmupthehydraulicoil
asdescribedinエ【Pre-OperationWarm-
Uponpage45".
6.Attheendoftheworkperiod,or
wheneverthemachineistobele杜idlefor3.
extendedperiods,preventltfrombeing
frozentothegroundbyparkingiton
wood,concrete,asphaltormatsurface.
soiutionofethylene
corrosioninhibitor.
gIycol)anda
■ExtremeHeat
AIlowtheenginetocoolbeforedraining
andflushingthecooiingsystem、
Watercontainingmorethansma
concentrationsofsaltormineralsshould
notbeusedinthecoolingsystem.Salt
facilitatescorrosionandmineralsdeposit
onthecoo[antpassagewaHs、
Bothprocessesinhibitpropercooling.
lncreasedevaporationrateswiIIcause
thebatteryelectroiyteleveItofallmore
rapidlyduringveryhotweather.Check
thelevelfrequentIyandadddistiIled
waterasrequiredtomaintaintheproper
Ievel.
Likeextremecold,extremeheatrequires4.
thatprecautionsbetakenwithrespecttothe
coolingsystem,thebatteryandIubrication、
Protectthemachinebyperformingthe
foIlowingrecommendedprocedures:
1.Hightemperaturesnecessitatetheuseof
lubricantswhlcharebothmoreviscous
andwhichresistdeteriorationathigher
operatingtemperatures.Refertothe
LubricationSectionandIubricatethe
machineusingtheiubricants
recommendedfortheexpected
temperatures.
CrankcaseoHisparticularlyimportant
becauseithelpsdissipateheat.Check
theoillevelfrequentlyandaddoilas
requiredtomaintainrequiredlevel.Too
IittleoilwiIlhinderheatdissipation.
2.Toensurepropercoolantcirculation,
drainandflushthecooIingsystem,clean
anyforeignmatterfromtheradiator
coo[ingfinsandthrough‑coreair
passages,repIacedefectivehoses,
tightenhosecIamps,tensionthewater
pumpdrivebeltproperly,eliminateany
Ieaksdetectedandfillthesystemwitha
50%solutionofethyleneglycoI.
Acorrosioninhibitorisrecommended.
Engineoverheatingduetolossofcoolant
willmosto丘enbecorrectedbySLOWLY
addingcoolantwhiletheengineis
runningatFASTIDLE.Shouldthisfailto
correcttheproblem,drainandflushthe
systemandrefillwithfreshcoolant(50%
Aircirculationaroundtheengineand
batterymustnotberestricted.Keepair
intakeandexhaustopeningscIearof
Ieaves,paperorotherforeignmatter
whichmayrestrictair刊ow.
5.Keeptheenginecleanofdirt,greaseand
othersubstanceswhichinhibitheat
dlssipation.
6,0perateengineatfuHthrottlewhen
diggingortrackingmachine.
Runtheengineonlywhenengagedin
workoperationsorwhentravelingthe
machine.
Avoidprobngedperiodsatidleandshut
theenginedownifoperationsare
interrupted.
■SandyorDustyWorkSites
ThepresenceofIargeamountsofsandor
dustattheworksitecancontributeto
acceIeratedcomponentweather.Either
substancewiIIactasanabrasivewhen
depositedonmovingpartsofthemachine.
Thisproblemcanbealleviatedby
increasingthescheduleoflubricationand
byservicingbreathersandfiltersatmore
frequentintervaIs.
Folbwtherecommendationsbebwwhen
operatinginsandordustonareguIar
bases.
4‑28