Toro 74291 - Bleeding the Hydraulic System; Checking the Hydraulic Hoses; Setting the Hydraulic Pump Neutral Position

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.
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Ifhydraulicuidisinjectedintotheskin
itmustbesurgicallyremovedwithinafew
hoursbyadoctorfamiliarwiththistypeof
injury.Gangrenemayresultifthisisnot
done.
•Keepbodyandhandsawayfrompinhole
leaksornozzlesthatejecthighpressure
hydraulicuid.
•Usecardboardorpapertondhydraulic
leaks.
•Safelyrelieveallpressureinthehydraulic
systembeforeperforminganyworkonthe
hydraulicsystem.
•Makesureallhydraulicuidhosesand
linesareingoodconditionandallhydraulic
connectionsandttingsaretightbefore
applyingpressuretohydraulicsystem.
SettingtheHydraulicPump
NeutralPosition
Note:Adjustthehandleneutralrst.Thatneedstobe
correctbeforethefollowingadjustmentcanbemade.
Mechanicalorhydraulicjacksmayfailto
supportmachineandcauseaseriousinjury.
•Usejackstandwhensupportingmachine.
•Donotusehydraulicjacks.
Enginemustberunningsomotioncontrol
adjustmentcanbeperformed.Contactwith
movingpartsorhotsurfacesmaycause
personalinjury.
Keephands,feet,face,clothingandotherbody
partsawayfromrotatingparts,muferand
otherhotsurfaces.
Thisadjustmentmustbemadewithdrivewheelsturning.
1.Raisetheframeandusejackstandstoholdupthe
machinesodrivewheelscanrotatefreely.
2.Unlatchtheseat,tilttheseatforwardanddisconnect
electricalconnectorfromtheseatsafetyswitch.
3.Temporarilyinstallajumperwireacrossterminals
inthewiringharnessconnector.
4.Slidetheseatforward,disconnecttheproprodand
tilttheseatfullyforward.
SettingtheRight-handHydraulicPump
NeutralPosition
1.Starttheengine,openthethrottle1/2wayand
releasetheparkingbrake.RefertoStartingand
StoppingtheEngineinOperation,page12.
Note:Themotioncontrollevermustbeinneutral
whilemakinganyadjustments.
2.Loosenthelocknutagainsttheballjoint.
3.Adjustthepumprodlengthbyrotatingthedouble
nutsonrod,intheappropriatedirection,until
thewheelisstillorslightlycreepinginreverse
(Figure56).
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