Toro 74269 - Hydraulic System Components; Replacing Cooling Fan Hydraulic Filter; Bleeding the Hydraulic System; Checking the Hydraulic Hoses

Figure77
1.Hydrauliclter
3.Adapter
2.Gasket
ReplacingtheCoolingFanHydraulic
Filter
ServiceInterval:Every500hoursorafteranypartof
thehydrauliccoolingfansystemis
repairedorreplaced.
1.Placedrainpanunderlter,removethehydraulic
hosefromthelter(
Figure78).
2.Removethecoolingfanhydrauliclterfromthe
T-ttingonthebottomofthelter(Figure78).
Figure78
1.Coolingfanhydrauliclter
3.Hydraulichose
2.Backofmachine4.T-tting
3.InstalltheltertotheT-ttingonthebottomand
thehydraulichosetothetop(Figure78).
BleedingtheHydraulicSystem
Thetractionsystemisselfbleeding,however,itmaybe
necessarytobleedthesystemifuidischangedorafter
workisperformedonthesystem.
1.Raiserearofthemachinesowheelsareoffthe
groundandsupportwithjackstands.
2.Starttheengineandrunatlowidlespeed.Engage
theleverandtractionononesideandspinthewheel
byhand.
3.Whenthewheelbeginstospinonitsown,keepit
engageduntilwheeldrivessmoothly.(minimum
2minutes)
4.Checkhydraulicuidlevelandaddasrequiredto
maintainproperlevel.
5.Repeatthisprocedureontheoppositewheel.
CheckingtheHydraulicHoses
ServiceInterval:Every100hours
Checkthehydraulichosesforleaks,loosettings,
kinkedlines,loosemountingsupports,wear,weather
andchemicaldeterioration.Makenecessaryrepairs
beforeoperating.
Note:Keepareasaroundthehydraulicsystemclean
fromgrassanddebrisbuildup.
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ifhydraulicuidisinjectedintotheskinit
mustbesurgicallyremovedwithinafewhours
byadoctorfamiliarwiththistypeofinjury.
Gangrenemayresultifthisisnotdone.
•Keepbodyandhandsawayfrompinholeleaks
ornozzlesthatejecthighpressurehydraulic
uid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulicsystem
beforeperforminganyworkonthehydraulic
system.
•Makesureallhydraulicuidhosesandlinesare
ingoodconditionandallhydraulicconnections
andttingsaretightbeforeapplyingpressureto
hydraulicsystem.
SettingtheHydraulicPump
NeutralPosition
Note:Adjustthehandleneutralrst.Thatneedstobe
correctbeforethefollowingadjustmentcanbemade.
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