Toro 74538 - Bleeding the Hydraulic System

Figure77
1.Hydrauliclter
3.Adapter
2.Gasket
7.Cleanupanyspilleduid.
8.Checktheuidinthereservoir,adduidtothetank
untilitreachesthecoldbafeofthetank.
Important:Useoilspeciedorequivalent.
Otheruidscouldcausesystemdamage.
9.Startengineandletrunforabouttwominutesto
purgeairfromthesystem.Stoptheengineand
checkforleaks.Ifoneorbothwheelswillnotdrive,
refertoBleedingHydraulicSystem.
10.Rechecklevelandadduid,ifrequired.Donot
overll.
BleedingtheHydraulicSystem
Thetractionsystemisselfbleeding,however,itmaybe
necessarytobleedthesystemifuidischangedorafter
workisperformedonthesystem.
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengineandwaitforallmovingpartstostop
beforeleavingtheoperatingposition.
3.Raisetherearofthemachineupontojackstands
highenoughtoraisethedrivewheelsofftheground.
4.Starttheengineandmovethethrottlecontroltoidle
position.
Ifthedrivewheeldoesnotrotate,itispossibleto
assistthepurgingofthesystembycarefullyrotating
thetireintheforwarddirection.
5.Checkthehydraulicuidlevelasitdropsadduid
asrequiredtomaintaintheproperlevel.
6.Repeatthisprocedurefortheoppositewheel.
7.Thoroughlycleantheareaaroundeachofthecharge
pumphousings.
CheckingtheHydraulicLines
ServiceInterval:Every100hours
Checkhydraulichosesandhosesforleaks,loosettings,
kinkedhoses,loosemountingsupports,wear,weather
andchemicaldeterioration.Makenecessaryrepairs
beforeoperating.
Note:Keepareasaroundhydraulicsystemcleanfrom
grassanddebrisbuildup.
Note:Extendedoperatingtimeathightemperatures
inahotclimatemayleadtodeteriorationofhosesand
seals.Inspectmorefrequentlyinahotclimateand
changehydraulicoilandltermorefrequently.
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ifhydraulicuidisinjectedintotheskinit
mustbesurgicallyremovedwithinafewhours
byadoctorfamiliarwiththistypeofinjury.
Gangrenemayresultifthisisnotdone.
•Keepbodyandhandsawayfrompinholeleaks
ornozzlesthatejecthighpressurehydraulic
uid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulicsystem
beforeperforminganyworkonthehydraulic
system.
•Makesureallhydraulicuidhosesandhosesare
ingoodconditionandallhydraulicconnections
andttingsaretightbeforeapplyingpressureto
hydraulicsystem.
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