Toro 74933 - Hydraulic System Maintenance; Hydraulic System Safety; Servicing the Hydraulic System

HydraulicSystem
Maintenance
HydraulicSystemSafety
•Ensurethatallhydraulic-uidhosesand
linesareingoodconditionandallhydraulic
connectionsandttingsaretightbefore
applyingpressuretothehydraulicsystem.
•Keepyourbodyandhandsawayfrompinhole
leaksornozzlesthatejecthigh-pressure
hydraulicuid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulic
systembeforeperforminganyworkonthe
hydraulicsystem.
•Seekimmediatemedicalattentionifuid
isinjectedintoskin.Injecteduidmustbe
surgicallyremovedwithinafewhoursbya
doctor.
ServicingtheHydraulic
System
Hydraulic-FluidType:Toro
®
HYPR-OIL
™
500
hydraulicuidorMobil
®
115W-50.
Important:Usethespecieduid.Otheruids
coulddamagethehydraulicsystem.
EachHydraulicSystemFluidCapacity:1.5L(52
oz)persidewithlterchange
CheckingtheHydraulicFluid
ServiceInterval:Every50hours—Checkthe
hydraulic-uidlevel.
1.Positionthemachineonalevelsurface.
2.Disengagetheblade-controlswitch(PTO),move
themotion-controlleverstotheNEUTRAL-LOCK
position,andengagetheparkingbrake.
3.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
4.Allowtheengineandthehydraulicsystemto
coolfor10minutes.
Note:Theoillevelonthedipstickisincorrect
whentheoilischeckedandtheunitishot.
5.Movetheseatforward.
6.Cleantheareaaroundthedipsticksof
hydraulic-systemreservoirs(Figure85).
7.Remove1dipstickfromthehydraulicreservoir
(Figure85).
8.Wipethedipstickoffandthreadthedipstickinto
thereservoir.
9.Removethedipstickandlookattheend(Figure
85).
Important:Donotoverllthehydraulic
unitswithuidasdamagemayoccur.Do
notrunthemachinewiththeuidbelowthe
addmark.
10.Iftheoillevelisattheaddmark,slowlypour
onlyenoughoilintothehydraulicreservoirto
raisetheleveltothefullorHline.
11.Installthedipstick.
12.Repeattheprocedurefortheoppositedipstick.
g015459
Figure85
Eitherdipstickisusedinthemachine
1.Full3.H—meanshighlevel
2.Add4.Dipsticklocationsunder
seat
ReplacingtheHydraulicFluidand
Filters
ServiceInterval:Aftertherst250hours—Change
thehydraulicltersandhydraulic
uidwhenusinganytypeofuid.
Every250hours—Changethehydrauliclters
andhydraulicuidwhenusingMobil
®
1uid
(moreoftenindirtyordustyconditions).
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