Toro 31598N - Hydraulic System Maintenance; Hydraulic System Safety; Checking the Hydraulic Fluid

HydraulicSystem
Maintenance
HydraulicSystemSafety
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ensurethatallhydraulic-uidhosesand
linesareingoodconditionandallhydraulic
connectionsandttingsaretightbefore
applyingpressuretothehydraulicsystem.
•Keepyourbodyandhandsawayfrompinhole
leaksornozzlesthatejecthigh-pressure
hydraulicuid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulicsystem
beforeperforminganyworkonthehydraulic
system.
•Seekimmediatemedicalattentionifuidis
injectedintoskin.
CheckingtheHydraulicFluid
ServiceInterval:Beforeeachuseordaily—Checkthe
hydraulicuidlevel.
Themachinesreservoirislledatthefactorywith
approximately71.9L(19U.S.gallons)ofhighquality
hydraulicuid.Checkthelevelofthehydraulicuid
beforetheengineisrststartedanddailythereafter.
UseToroPremiumAllSeasonHydraulicFluid(Available
in5gallonpailsor55gallondrums.SeethePartsCatalogor
Torodistributorforpartnumbers.)
IftheTorouidisnotavailable,otheruidsmaybeused
providedtheymeetallthefollowingmaterialproperties
andindustryspecications.Consultwithyourlubricant
distributortoidentifyasatisfactoryproduct.
Note:Torodoesnotassumeresponsibilityfordamage
causedbyimpropersubstitutions,souseonlyproducts
fromreputablemanufacturerswhowillstandbehindtheir
recommendation.
HighViscosityIndex/LowPourPoint
Anti-wearHydraulicFluid,ISOVG46
MaterialProperties:
St@40°C44to48 Viscosity,ASTMD445
St@100°C7.9to8.5
HighViscosityIndex/LowPourPoint
Anti-wearHydraulicFluid,ISOVG46(cont'd.)
ViscosityIndexASTM
D2270
140to160
PourPoint,ASTMD97-34°Fto-49°F
FZG,Failstage
11orbetter
Watercontent(newuid)500ppm(maximum)
IndustrySpecications:VickersI-286-S(QualityLevel),
VickersM-2950-S(Quality
Level),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
biodegradabilityandperformance,thehydraulicsystem
shouldbethoroughlyushedofconventionaluid.The
oilisavailablein5galloncontainersor55gallondrums
fromyourMobilDistributor.
Important:Manyhydraulicuidsarealmostcolorless,
makingitdifculttospotleaks.Areddyeadditivefor
thehydraulic-systemoilisavailablein20ml(2/3oz)
bottles.1bottleissufcientfor15to22L(4to6gallons)
ofhydraulicoil.OrderToroPartNo.44-2500fromyour
authorizedTorodistributor.
1.Performthepremaintenanceprocedure;referto
PreparingtheMachineforMaintenance(page38).
2.Ontherightsideofthemachine,raisetheaccesscover
toexposethehydraulic-tankcap(Figure87).
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