Toro 74830 - Hydraulic System Maintenance; Checking Hydraulic Oil Level; Changing Hydraulic System Filter and Oil; Removing Hydraulic System Filters

HydraulicSystem
Maintenance
OilType:20w-50engineoil.
Important:Useoilspeciedorequivalent.Other
uidscouldcausesystemdamage.
CheckingtheHydraulicOil
Level
ServiceInterval:Every25hours
Checkexpansionreservoirandifnecessaryadd20W-50
engineoiltotheFULLCOLDline
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2
3
Figure46
1.Expansionreservoir3.Engine
2.FullColdline
ChangingtheHydraulic
SystemFilterandOil
Thelterandoilarechangedatthesametime.DoNot
reuseoil.Oncethenewlterisinstalledandoilisadded
anyairinthesystemmustbepurged.
Thebleedingprocessisrepeateduntiltheoilremains
attheFULLCOLDlineinthereservoirafterpurging.
Failuretoproperlyperformthisprocedurecan
resultinirreparabledamagetothetransaxledrive
system.
RemovingHydraulicSystemFilters
1.Stopengine,waitforallmovingpartstostop,and
allowenginetocool.Removethekeyandengage
theparkingbrake.
2.Locatethelterandguardsoneachtransaxledrive
system(Figure47).Removethreescrewssecuring
thelterguardandguard.
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1
2
3
4
5
Figure47
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
3.Carefullycleanareaaroundlters.Itisimportant
thatnodirtorcontaminationenterhydraulicsystem.
4.Locateandremovetheventplugoneach
transmission
5.Placeacontainerbelowtheltertocatchtheoilthat
drainswhenthelterisremoved.Unscrewthelter
toremoveandallowoiltodrainfromdrivesystem.
Repeatthisprocedureforbothlters.
InstallingtheHydraulicSystemFilters
ServiceInterval:Aftertherst50hours
Every400hours
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