Toro ProCore 648s - Hydraulic System Maintenance; Hydraulic System Safety; Relieving Hydraulic Pressure

Note:Thecoringheadlowersuntilitisfully
supportedbytheservicelatch.
6.PressthecenterInfoCenterbuttonuntilthe
SERVICELOWERoptionisselected(Figure177),
presstherightbutton.
g359989
Figure177
7.MovethekeytotheSTOPposition.
Note:Starttheengineandrunittoraisethecoring
headhydraulicallysothatyoucanstowtheservice
latch;refertoStowingtheServiceLatch(page50).
CheckingtheHydraulic
Lines
ServiceInterval:Beforeeachuseordaily
Beforeeachuse,checkthehydraulictubesandhoses
forleaks,loosettings,kinkedhoses,loosemounting
supports,wear,andweatherorchemicaldeterioration.
Makereplacewornordamagedhydrauliclinesbefore
operatingthemachine.
Note:Keeptheareasaroundthehydraulicsystem
cleanfromdebrisbuildup.
HydraulicFluid
Specications
Thereservoirislledatthefactorywithhigh-quality
hydraulicuid.Checkthelevelofthehydraulicuid
beforeyourststarttheengineanddailythereafter;
refertoCheckingtheEngine-OilLevel(page72).
Recommendedhydraulicuid:themanufacturer
PXExtendedLifeHydraulicFluid;availablein19L(5
USgallon)pailsor208L(55USgallon)drums.
Note:Amachineusingtherecommended
replacementuidrequireslessfrequentuidandlter
changes.
Alternativehydraulicuids:Ifthemanufacturer
PXExtendedLifeHydraulicFluidisnotavailable,
youmayuseanotherconventional,petroleum-based
hydraulicuidhavingspecicationsthatfallwithinthe
listedrangeforallthefollowingmaterialproperties
andthatitmeetsindustrystandards.Donotuse
syntheticuid.Consultwithyourlubricantdistributor
toidentifyasatisfactoryproduct.
Note:themanufacturerdoesnotassume
responsibilityfordamagecausedbyimproper
substitutions,souseproductsonlyfromreputable
manufacturerswhowillstandbehindtheir
recommendation.
HighViscosityIndex/LowPourPoint
Anti-WearHydraulicFluid,ISOVG46
MaterialProperties:
Viscosity,ASTMD445cSt@40°C(104°F)
44to48
ViscosityIndexASTMD2270
140orhigher
PourPoint,ASTMD97-37°Cto-45°C(-34°F
to-49°F)
IndustrySpecications:EatonVickers694(I-286-S,
M-2950-S/35VQ25or
M-2952-S)
Note:Manyhydraulicuidsarealmostcolorless,
makingitdifculttospotleaks.Areddyeadditivefor
thehydraulicuidisavailablein20ml(0.67oz)
bottles.Abottleissufcientfor15to22L(4to6US
gallons)ofhydraulicuid.OrderPartNo.44-2500
fromyourauthorizedthemanufacturerdistributor.
Important:themanufacturerPremiumSynthetic
BiodegradableHydraulicFluidistheonly
syntheticbiodegradableuidapprovedbyToro.
Thisuidiscompatiblewiththeelastomersused
inTorohydraulicsystemsandissuitablefora
wide-rangeoftemperatureconditions.Thisuidis
compatiblewithconventionalmineraloils,butfor
maximumbiodegradabilityandperformance,the
hydraulicsystemshouldbethoroughlyushed
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