Toro 74920 TITAN ZX4820 - Page 42

RemovingHydraulicSystemFilters
Important:Whenthehydraulicoillterisremoved,all
ofthehydraulicoilineachtransaxlewilldrainout.Use
acontainerthatwillhandle4.495liters(152oz)orlarger.
1.Stopengine,waitforallmovingpartstostop,and
allowenginetocool.Removethekeyandengagethe
parkingbrake.
2.Locatethelterandguardsoneachtransaxledrive
system(
Figure58).Removethreescrewssecuringthe
lterguardandguard.
G010254
1
2
3
4
5
Figure58
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
3.Carefullycleantheareaaroundthelters.Itis
importantthatnodirtorcontaminationenterthe
hydraulicsystem.
4.Placeacontainerbelowtheltertocatchtheoilthat
drainswhenthelterandventplugsareremoved.
5.Locateandremovetheventplugoneachtransmission
6.Unscrewtheltertoremoveandallowoiltodrain
fromthedrivesystem.
Repeatthisprocedureforbothlters.
InstallingtheHydraulicSystemFilters
ServiceInterval:Aftertherst50hours
Every400hours
G008748
3/4
1
2
3
4
5
6
Figure59
1.Applyathincoatofoilonthesurfaceoftherubber
sealofeachlter.
2.Turnthelterclockwiseuntilrubbersealcontactsthe
lteradapterthentightenthelteranadditional3/4to
1fullturn.Repeatfortheotherlter
3.Installthelterguardsovereachlteraspreviously
removed.Usethethreescrewstosecurethelter
guards.
4.Verifytheventplugsareremovedbeforeaddingtheoil.
5.Slowlypourthespeciedoilthroughexpansion
reservoiruntiloilcomesoutofoneoftheventplug
holes.Stopandinstallthatventplug.Torquetheplug
to180in-lb(20.3N-m).
6.Continuetoaddoilthroughtheexpansionreservoir
untiloilcomesoutoftheremainingventplugholeon
thesecondtransmission.Stopandinstallthatvent
plug.Torquetheplugto180in-lb(20.3N-m).
7.Continuetoaddoilthroughtheexpansionreservoir
untilitreachestheFULLCOLDlineontheexpansion
reservoir.ProceedtotheBleedingtheHydraulic
Systemsection.
Important:Failuretoperformthe Bleeding
the Hy draulic System procedureafterchanging
hydraulicltersandoilcanresultinirreparable
damagetothetransaxledrivesystem.
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