Toro 74141 - Hydraulic System Maintenance

HydraulicSystem
Maintenance
ServicingtheHydraulic
System
HydraulicOilType:Toro
®
HYPR-OIL
™
500hydraulicoil
or20W-50engineoil.
Important:Useoilspecied.Otheruidscouldcause
systemdamage.
HydraulicSystemCapacity(withltersremoved):4.45
L(150oz)
CheckingtheHydraulic-OilLevel
ServiceInterval:Every25hours
1.Allowthehydraulicoiltocooldown,andchecktheoil
levelwhentheoiliscold.
2.Checktheexpansionreservoir,and,ifnecessary,add
Toro
®
HYPR-OIL
™
500hydraulicoiltotheFULL
COLDline.
G017452
G017451
1
2
Figure68
1.Expansionreservoir
2.FULLCOLDline
Changingthe
Hydraulic-SystemFilter
andOil
Thelterandoilarechangedatthesametime.Donotuse
theoilagain.Oncethenewlterisinstalled,andtheoilis
added,anyairinthesystemmustbepurged.
Thebleedingprocessisrepeateduntiltheoilremainsatthe
FULLCOLDlineinthereservoirafterpurging.Failureto
properlyperformthisprocedurecanresultinirreparable
damagetothetransaxledrivesystem.
RemovingHydraulic-SystemFilters
1.Stoptheengine,waitforallmovingpartstostop,allow
theenginetocool,removethekey,andengagethe
parkingbrake.
2.Locatethelterandguardsoneachtransaxle-drive
system(Figure69).
3.Removethreescrewssecuringthelterguardand
guard(Figure69).
G017444
1
2
3
4
5
Figure69
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
4.Carefullycleantheareaaroundthelters.
Important:Donotallowdirttoenterthe
hydraulicsystem,orcontaminationmayoccur.
5.Placeadrainpanbelowtheltertocatchtheoilthat
drainswhenthelterandventplugsareremoved.
6.Locateandremovetheventplugoneachtransmission
7.Unscrewtheltertoremoveit,andallowtheoilto
drainfromdrivesystem.
8.Repeatthisprocedureforbothlters.
InstallingtheHydraulic-SystemFilters
ServiceInterval:Aftertherst50hours
Every400hours
1.Applyathincoatofoilonthesurfaceoftherubber
sealofeachlter.
2.Turnthelterclockwiseuntiltherubbersealcontacts
thelteradapter,thentightenthelteranadditional
3/4to1fullturn.
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