HydraulicSystem
Maintenance
ServicingtheHydraulic
System
HydraulicOilType:Toro
®
HYPR-OIL
™
500
hydraulicoilor20W-50engineoil.
Important:Useoilspecied.Otheruidscould
causesystemdamage.
HydraulicSystemCapacity(withltersremoved):
150.6ounces(4.45l)
CheckingtheHydraulicOilLevel
ServiceInterval:Every25hours
1.Allowthehydraulicoiltocooldown.Checktheoil
levelwhentheoiliscold.
2.Checkexpansionreservoirandifnecessaryadd
Toro
®
HYPR-OIL
™
500hydraulicoiltotheFULL
COLDline.
Figure67
1.Expansionreservoir
2.FULLCOLDline
ChangingtheHydraulic
SystemFilterandOil
Thelterandoilarechangedatthesametime.DoNot
reuseoil.Oncethenewlterisinstalledandoilisadded
anyairinthesystemmustbepurged.
Thebleedingprocessisrepeateduntiltheoilremains
attheFULLCOLDlineinthereservoirafterpurging.
Failuretoproperlyperformthisprocedurecan
resultinirreparabledamagetothetransaxledrive
system.
RemovingHydraulicSystemFilters
1.Stopengine,waitforallmovingpartstostop,and
allowenginetocool.Removethekeyandengage
theparkingbrake.
2.Locatethelterandguardsoneachtransaxledrive
system(
Figure68).Removethreescrewssecuring
thelterguardandguard.
Figure68
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
3.Carefullycleanareaaroundlters.Itisimportant
thatnodirtorcontaminationenterhydraulicsystem.
4.Placeacontainerbelowtheltertocatchtheoilthat
drainswhenthelterandventplugsareremoved.
5.Locateandremovetheventplugoneach
transmission
6.Unscrewtheltertoremoveandallowoiltodrain
fromdrivesystem.
Repeatthisprocedureforbothlters.
InstallingtheHydraulicSystemFilters
ServiceInterval:Aftertherst50hours
Every400hours
47