Toro GrandStand 74550 - Page 52

ReplacingtheHydraulicFilter
ServiceInterval:Aftertherst8hours
Every500hours/Yearly(whichever
comesrst)
WARNING
Hothydraulicuidcancausesevereburns.
Allowthehydraulicuidtocoolbeforeperforming
anymaintenancetothehydraulicsystem.
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengineandwaitforallmovingpartstostop
beforeleavingtheoperatingposition.
Important:Donotsubstituteautomotiveoil
lterorseverehydraulicsystemdamagemay
result.
3.Locatethelterandplacedrainpanunderlter
(
Figure74).
Figure74
1.Hydraulictank
2.Hydrauliclter
4.Removetheoldlterandwipethelteradapter
gasketsurfaceclean(
Figure75).
5.Applyathincoathydraulicuidtotherubbergasket
onthereplacementlter.
6.Installreplacementhydrauliclterontothelter
adapter.Turntheoillterclockwiseuntiltherubber
gasketcontactsthelteradapter,thentightenthe
lteranadditional1/2turn(
Figure75).
Figure75
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
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