Toro 30447 - Replacing the Hydraulic Filters; Checking the Hydraulic Lines and Hoses; Adjusting the Counterbalance Pressure

ReplacingtheHydraulicFilters
ServiceInterval:Aftertherst200hours
Every800hours
Changethe2hydraulicltersinitiallyaftertherst200
operatinghours.Thereafter,changetheltersafter
every800operatinghours,innormalconditions.
UseTororeplacementlters(PartNo.94-2621forthe
leftsideofthemachineand75-1310fortherightside
ofthemachine).
Important:Useofanyotherltermayvoidthe
warrantyonsomecomponents.
1.Positionthemachineonalevelsurface,lowerthe
cuttingunits,stoptheengine,engagetheparking
brakes,andremovetheignitionkey.
2.Cleantheareaaroundtheltermountingarea.Place
adrainpanunderthelterandremovethelter
(
Figure75).
Figure75
3.Lubricatethenewltergasketandllthelterwith
hydraulicuid.
4.Ensurethattheltermountingareaisclean.Screw
thelteronuntilthegasketcontactsthemounting
plate;thentightenthelteranadditional1/2turn.
5.Starttheengineandletitrunforabouttwominutes
topurgeairfromthesystem.Stoptheengineand
checkforleaks.
CheckingtheHydraulicLines
andHoses
ServiceInterval:Every2years
Inspectthehydrauliclinesandhosesdailyfor
leaks,kinkedlines,loosemountingsupports,wear,
loosettings,weatherdeterioration,andchemical
deterioration.Makeallnecessaryrepairsbefore
operating.
WARNING
Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.
•Makesureallhydraulicuidhosesandlinesare
ingoodconditionandallhydraulicconnections
andttingsaretightbeforeapplyingpressureto
thehydraulicsystem.
•Keepyourbodyandhandsawayfrompin
holeleaksornozzlesthatejecthighpressure
hydraulicuid.
•Usecardboardorpapertondhydraulicleaks.
•Safelyrelieveallpressureinthehydraulicsystem
beforeperforminganyworkonthehydraulic
system.
•Seekimmediatemedicalattentionifuidis
injectedintoskin.
AdjustingtheCounterbalance
Pressure
Thecounterbalancetestport(Figure76)isused
totestthepressureinthecounterbalancecircuit.
Recommendedcounterbalancepressureis470psi(3241
kPa).Toadjustthecounterbalancepressure,loosenthe
locknut,rotatetheadjustingscrew(
Figure76)clockwise
toincreasethepressureorcounterclockwisetodecrease
thepressureandtightenthelocknut.
Note:Allthreesidecuttingunitscastorwheelsshould
remainonthegroundwithcounterbalanceapplied.
50