Toro 74997 - Hydraulic Filter and Fluid Replacement

G015459
H
3
4
Figure88
Eitherdipstickisusedinthemachine
1.Full3.H—meanshighlevel
2.Add4.Dipsticklocationsunder
seat
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ifhydraulicuidisinjectedintotheskin,
itmustbesurgicallyremovedwithinafew
hoursbyadoctorfamiliarwiththistype
ofinjury.Gangrenemayresultifthisis
notdone.
•Keepyourbodyandhandsawayfrom
pinholeleaksornozzlesthateject
high-pressurehydraulicuid.
•Usecardboardorpapertondhydraulic
leaks.
•Safelyrelieveallpressureinthehydraulic
systembeforeperforminganyworkonthe
hydraulicsystem.
•Makesurethatallhydraulic-uidhoses
andlinesareingoodconditionandthatall
hydraulicconnectionsandttingsaretight
beforeapplyingpressuretothehydraulic
system.
ReplacingtheHydraulicFiltersand
HydraulicFluid
ServiceInterval:Aftertherst250hours—Changethe
hydraulicltersandhydraulicuidwhen
usinganytypeofuid.
Every250hours—Changethehydraulicltersand
hydraulicuidwhenusingMobil
®
1uid(moreoften
indirtyordustyconditions).
Every500hours—Changethehydraulicltersand
hydraulicuidwhenusingToro
®
HYPR-OIL
™
500hydraulicuid(moreoftenindirtyordusty
conditions).
Toreplacethehydraulicuid,youneedtoremovethe
lters.Replacebothatthesametime;refertoServicingthe
HydraulicSystem(page58)fortheoilspecications.
1.Disengagetheblade-controlswitch(PTO),movethe
motion-controlleverstotheNEUTRAL-LOCKposition,
andsettheparkingbrake.
2.Shutofftheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Raisethemachineandsupportitwithjackstands
(Figure89).
Figure89
1.Jackstands
4.Removeboththemowerbeltandthepump-drive
belt;refertoReplacingtheMowerBelt(page54)and
ReplacingtheHydraulic-PumpDriveBelt(page55).
Note:Thispreventsoilfromgettingonthebelts.
5.Placeadrainpanunderthelter,removetheoldlter,
andwipethesurfaceclean(Figure90).
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