Toro Z Master 74145 - Hydraulic System Maintenance; Servicing the Hydraulic System; Checking the Hydraulic Oil Level; Changing the Hydraulic System Filter and Oil

HydraulicSystem
Maintenance
ServicingtheHydraulic
System
HydraulicOilType:Toro
®
HYPR-OIL
™
500
hydraulicoilor20W-50engineoil.
Important:Useoilspecied.Otheruidscould
causesystemdamage.
HydraulicSystemCapacity(withltersremoved):
150.6ounces(4.45l)
CheckingtheHydraulicOilLevel
ServiceInterval:Every25hours
1.Allowthehydraulicoiltocooldown.Checktheoil
levelwhentheoiliscold.
2.Checkexpansionreservoirandifnecessaryadd
Toro
®
HYPR-OIL
™
500hydraulicoiltotheFULL
COLDline.
G017452
G017451
1
2
Figure67
1.Expansionreservoir
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(
Figure68).Removethreescrewssecuring
thelterguardandguard.
G017444
1
2
3
4
5
Figure68
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
3.Carefullycleanareaaroundlters.Itisimportant
thatnodirtorcontaminationenterhydraulicsystem.
4.Placeacontainerbelowtheltertocatchtheoilthat
drainswhenthelterandventplugsareremoved.
5.Locateandremovetheventplugoneach
transmission
6.Unscrewtheltertoremoveandallowoiltodrain
fromdrivesystem.
Repeatthisprocedureforbothlters.
InstallingtheHydraulicSystemFilters
ServiceInterval:Aftertherst50hours
Every400hours
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