Toro 74922 - Page 57

ReplacingtheHydraulicFiltersand
HydraulicOil
ServiceInterval:Aftertherst250hours—Changethe
hydraulicltersandhydraulicoilwhen
usinganytypeofoil.
Every250hours—Changethehydraulicltersand
hydraulicoilwhenusingMobil
®
1oil(moreoftenin
dirtyordustyconditions).
Every500hours—Changethehydraulicltersand
hydraulicoilwhenusingToro
®
HYPR-OIL
™
500
hydraulicoil(moreoftenindirtyordustyconditions).
Toreplacethehydraulicoil,theltersneedtoberemoved.
Replacebothatthesametime;refertoServicingthe
HydraulicSystem(page56)fortheoilspecications.
1.Disengagetheblade-controlswitch(PTO),movethe
motion-controlleverstotheneutral-lockedposition,
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Raisethemachineandsupportitwithjackstands
(Figure86).
Figure86
1.Jackstands
4.Removeboththemowerbeltandthepump-drive
belt;refertoReplacingtheMowerBelt(page51)and
ReplacingtheHydraulicPump-DriveBelt(page52).
Note:Thispreventsoilfromgettingonthebelts.
5.Placeadrainpanunderthelter,removetheoldlter,
andwipethesurfaceclean(Figure87).
G008968
1
2
Figure87
Bottomviewofthemachine
1.Filterlocations
2.Hydrauliclter
6.Applyathincoatofhydraulicoiltotherubbergasket
onthereplacementlter(Figure87).
7.Installthereplacementhydrauliclter.
8.Installthepump-drivebeltandthemowerbelt.
9.Removethejackstandsandlowerthemachine(Figure
86).
10.Addoiltothehydraulicreservoirandcheckforany
leaks.
11.Cleanupanyspilledoil.
12.Starttheengineandletitrunforabout2minutesto
purgeairfromthesystem.
13.Stoptheengineandcheckforleaks.
14.Checktheoillevelwhiletheoiliscold.
15.Ifrequired,addoiltothehydraulicreservoir.
Note:Donotoverll.
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