Toro 30934 - Bleeding the Hydraulic System

8.Rechecktheuidlevelwhiletheuidiswarm.If
required,adduidtothereservoiruntilitreachesthe
hotlevelofthebafe.
Note:Theuidlevelshouldbetothetopofthehot
levelofthebafe,whentheuidiswarm(Figure60).
9.Installthecaponthellerneck.
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ifhydraulicuidisinjectedintotheskinit
mustbesurgicallyremovedwithinafew
hoursbyadoctorfamiliarwiththistype
ofinjury.Gangrenemayresultifthisis
notdone.
•Keepbodyandhandsawayfrompinhole
leaksornozzlesthatejecthighpressure
hydraulicuid.
•Usecardboardorpapertondhydraulic
leaks.
•Safelyrelieveallpressureinthehydraulic
systembeforeperforminganyworkonthe
hydraulicsystem.
•Makesurethatallhydraulicuidhoses
andlinesareingoodconditionandall
hydraulicconnectionsandttingsare
tightbeforeapplyingpressuretohydraulic
system.
ReplacingtheHydraulicFilter
ServiceInterval:Aftertherst8hours
Every200hours
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengineandwaitforallmovingpartstostop
beforeleavingtheoperatingposition.
Important:Donotsubstituteanautomotiveoil
lter,orseverehydraulicsystemdamagemay
result.
3.Removethehydraulic-reservoircapandtemporarily
covertheopeningwithaplasticbagandarubberband
topreventallofthehydraulicuidfromdrainingout.
4.Locatethelterundertheenginebaseandplacea
drainpanunderthelter(
Figure61).
5.Removetheoldlterandwipethelter-adaptergasket
surfaceclean(Figure61).
Figure61
1.Hydrauliclter
3.Adapter
2.Gasket
6.Applyathincoathydraulicuidtotherubbergasket
onthereplacementlter.
7.Installthereplacementhydrauliclterontothelter
adapter.Donottighten.
8.Removetheplasticbagfromthereservoiropeningand
allowtheltertollwithhydraulicuid.
9.Whenthehydrauliclterisfull,turntheoillter
clockwiseuntiltherubbergasketcontactsthelter
adapter,thentightenthelteranadditional1/2turn
(
Figure61).
10.Cleanupanyspilleduid.
11.Ifthereisnouid,addMobil115W-50syntheticmotor
oiloranequivalentsyntheticoiltoapproximately6mm
(1/4inch)belowthetopofthereservoirbafe.
Important:Useoilspeciedorequivalent.Other
uidscouldcausesystemdamage.
12.Starttheengineandletitrunforabout2minutesto
purgeairfromthesystem.Stoptheengineandcheck
forleaks.Ifoneorbothwheelswillnotdrive,referto
BleedingHydraulicSystem.
13.Checkthelevelandadduid,ifrequired.Donot
overll.
BleedingtheHydraulicSystem
Thetractionsystemisselfbleeding,however,itmaybe
necessarytobleedthesystemiftheuidischangedorafter
workisperformedonthesystem.
Airmustbepurgedfromthehydraulicsystemwhenany
hydrauliccomponents,includingtheoillter,areremoved
oranyofthehydrauliclinesaredisconnected.Thecritical
areaforpurgingairfromthehydraulicsystemisbetweenthe
oilreservoirandeachchargepumplocatedonthetopof
eachvariabledisplacementpump.Airinotherpartsofthe
hydraulicsystemwillbepurgedthroughnormaloperation
oncethechargepumpisprimed.
1.DisengagethePTOandsettheparkingbrake.
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