HydraulicSystem
Maintenance
HydraulicSystemSafety
•Seekimmediatemedicalattentionifuidisinjected
intoskin.Injecteduidmustbesurgicallyremoved
withinafewhoursbyadoctor.
•Ensurethatallhydraulic-uidhosesandlinesare
ingoodconditionandallhydraulicconnections
andttingsaretightbeforeapplyingpressureto
thehydraulicsystem.
•Keepyourbodyandhandsawayfrompinhole
leaksornozzlesthatejecthigh-pressurehydraulic
uid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulicsystem
beforeperforminganyworkonthehydraulic
system.
RelievingHydraulic
Pressure
Torelievehydraulicpressurewhiletheengineison,
disengagetheauxiliaryhydraulicsandfullylowerand
retracttheloaderarms.
Torelievethepressurewhiletheengineisoff,cycle
thejoystickbetweentheforwardpositionstolowerthe
loaderarms(Figure77).
g303358
Figure77
Hydraulic-Fluid
Specications
Every400hours—Replacethehydraulicoiland
lters(ifnotusingT orouid).
Every1,000hours—Replacethehydraulicoil
andlters(ifusingT orouid).
Hydraulic-TankCapacity:57.7L(15.25USgallons)
Useonly1ofthefollowinguidsinthehydraulic
system:
•ToroPremiumTransmission/HydraulicTractor
Fluid(refertoyourAuthorizedServiceDealerfor
moreinformation)
•ToroPXExtendedLifeHydraulicFluid(refer
toyourAuthorizedServiceDealerformore
information)
•IfeitheroftheaboveTorouidsarenotavailable,
youmayuseanotherUniversalTractor
HydraulicFluid(UTHF),buttheymustbeonly
conventional,petroleum-basedproducts.The
specicationsmustfallwithinthelistedrangefor
allthefollowingmaterialpropertiesandtheuid
shouldmeetthelistedindustrystandards.Check
withyourhydraulicuidsuppliertodetermineifthe
uidmeetsthesespecications.
Note:T orowillnotassumeresponsibilityfor
damagecausedbyimpropersubstitutions,souse
onlyproductsfromreputablemanufacturerswho
willstandbehindtheirrecommendations.
MaterialProperties
cStat40°C:55to62 Viscosity,ASTMD445
cStat100°C:9.1to9.8
Viscosityindex,ASTMD2270
140to152
PourPoint,ASTMD97-37to-43°C(-35to-46°F)
IndustryStandards
APIGL-4,AGCOPoweruid821XL,FordNewHolland
FNHA-2-C-201.00,KubotaUDT ,JohnDeereJ20C,Vickers
35VQ25andVolvoWB-101/BM
Note:Manyhydraulicuidsarealmostcolorless,
makingitdifculttospotleaks.Areddyeadditive
forthehydraulicsystemuidisavailablein20
ml(2/3oz)bottles.Onebottleissufcientfor
15to22L(4to6USgallons)ofhydraulicuid.
OrderPartNo.44-2500fromyourAuthorizedToro
Dealer.
49