Toro 41593 - Hydraulic System Maintenance; Hydraulic Fluid Specification; Servicing the Hydraulic Oil

HydraulicSystem
Maintenance
HydraulicFluidSpecication
Themachinesreservoirislledatthefactorywith
approximately56L(15USgallons)ofhighqualityhydraulic
uid.Checkthelevelofthehydraulicuidbeforethe
engineisrststartedanddailythereafter.Therecommended
replacementuidisasfollows:
ToroPremiumAllSeasonHydraulicFluid(Availablein
5-gallonpailsor55-gallondrums.Seepartscatalogor
Torodistributorforpartnumbers.)
Alternateuids:IftheTorouidisnotavailable,other
uidsmaybeusedprovidedtheymeetallthefollowing
materialpropertiesandindustryspecications.Wedonot
recommendtheuseofsyntheticuid.Consultwithyour
lubricantdistributortoidentifyasatisfactoryproductNote:
Torowillnotassumeresponsibilityfordamagecausedby
impropersubstitutions,souseonlyproductsfromreputable
manufacturerswhowillstandbehindtheirrecommendation.
HighViscosityIndex/LowPourPointAnti-wearHydraulic
Fluid,ISOVG46
MaterialProperties:
Viscosity,ASTMD445cSt@40°C44to48
cSt@100°C7.9to8.5
ViscosityIndexASTM
D2270
140to160
PourPoint,ASTMD97-34°Fto-49°F
IndustrySpecications:
VickersI-286-S(QualityLevel),VickersM-2950-S
(QualityLevel),DenisonHF-0
Important:TheISOVG46Multigradeuidhasbeen
foundtoofferoptimalperformanceinawiderangeof
temperatureconditions.Foroperationinconsistently
highambienttemperatures,18°C(65°F)to49°C
(120°F),ISOVG68hydraulicuidmayofferimproved
performance.
PremiumBiodegradableHydraulicFluid-MobilEAL
EnviroSyn46H
Important:MobilEALEnviroSyn46Histheonly
syntheticbiodegradableuidapprovedbyToro.This
uidiscompatiblewiththeelastomersusedinToro
hydraulicsystemsandissuitableforawide-range
oftemperatureconditions.Thisuidiscompatible
withconventionalmineraloils,butformaximum
biodegradabilityandperformancethehydraulicsystem
shouldbethoroughlyushedofconventionaluid.The
oilisavailablein5-gallon(19L)containersor55-gallon
drumsfromyourMobilDistributor.
Important:Manyhydraulicuidsarealmostcolorless,
makingitdifculttospotleaks.Areddyeadditivefor
thehydraulicsystemoilisavailablein20ml(2/3oz)
bottles.Onebottleissufcientfor15to22L(4to6US
gallons)ofhydraulicoil.Orderpartno.44-2500from
yourauthorizedTorodistributor.Thisreddyeisnot
recommendedforusewithbiodegradableuids;use
foodcoloring.
ServicingtheHydraulicOil
Iftheoilbecomescontaminated,contactanAuthorizedToro
Distributortohavethesystemushed.
Note:Contaminatedoillooksmilkyorblackwhencompared
tocleanoil.
ReplacingtheHydraulicOilFilter
ServiceInterval:Aftertherst5hours
Every400hours/Yearly(whichevercomesrst)
UsetheTororeplacementlter(SeeyourPartsManualforthe
correctpartnumber.)
Important:Useofanyotherltermayvoidthewarranty
onsomecomponents.
WARNING
Hothydraulicuidcancausesevereburns.
Allowthehydraulicoiltocoolbeforeperforming
anymaintenancetothehydraulicsystem.
1.Positionthesprayeronalevelsurface,settheparking
brake,stopthepump,stoptheengine,andremovethe
keyfromthestarterswitch.
2.Locatethe2hydraulicltersonthemachine.One
belowthehydraulicoiltankandtheotherattherearof
themachineontheframe.
•Forwardlter,belowthehydraulictank.
G013791
1
2
Figure70
1.Hydraulictank
2.Forwardlter
•Rearlter,locatedonthemachineframe.
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