Toro 30446 - Engine Cooling Fan Operation; Checking the Interlock Switches; Pushing or Towing the Machine

Important:Allowenginetoidlefor5minutes
beforeshuttingitoffafterafullloadoperation.
Failuretodosomayleadtoturbo-chargertrouble.
EngineCoolingFanOperation
Theenginecoolingfanswitchhastwopositionsfor
controllingtheoperationofthefan.Thetwopositions
areRandAuto.Thefanhastheabilitytoreverse
toblowdebrisoffoftherearscreen.Undernormal
operatingconditions,theswitchwillbeintheAuto
position.InAuto,thefanspeedwillbecontrolled
bythecoolantorhydraulicoiltemperatureandwill
automaticallyreversetoblowdebrisoffoftherear
screen.Areversecycleisautomaticallyinitiatedwhen
eitherthecoolantorhydraulictemperaturereaches
acertainpoint.Bypressingthefanswitchforward
intotheRposition,thefanwillcompleteamanually
initiatedreversecycle.Itisrecommendedtoreversethe
fanwhentherearscreeniscloggedorpriortoentering
theshoporthestoragearea.
CheckingtheInterlock
Switches
Ifsafetyinterlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlock
switchesdailyandreplaceanydamaged
switchesbeforeoperatingthemachine.
Themachinehasinterlockswitchesintheelectrical
system.Theseswitchesaredesignedtostoptheengine
whentheoperatorgetsoffoftheseatwhenthetraction
pedalisdepressed.However,theoperatormaygetoff
oftheseatwhiletheengineisrunningandthetraction
pedalisinneutral.Althoughtheenginewillcontinue
torunifthePTOleverisdisengagedandthetraction
pedalisreleased,itisstronglyrecommendedthatthe
enginebestoppedbeforerisingfromtheseat.
Tochecktheoperationoftheinterlockswitches,
performthefollowingprocedure:
1.Drivethemachineslowlytoalarge,relativelyopen
area.Lowerthecuttingunit,stoptheengine,and
applytheparkingbrake.
2.Sitontheseatanddepressthetractionpedal.Try
tostarttheengine.Theengineshouldnotcrank.
Iftheenginecranks,thereisamalfunctioninthe
interlocksystemthatshouldbecorrectedbefore
beginningoperation.
3.Sitontheseatandstarttheengine.Risefromthe
seatandmovethePTOlevertoOn.ThePTO
shouldnotengage.IfthePTOengages,thereisa
malfunctionintheinterlocksystemthatshouldbe
correctedbeforebeginningoperation.
4.Sitontheseat,engagetheparkingbrakeandstart
theengine.Movethetractionpedaloutofthe
neutralposition.Theengineshouldkill.Ifthe
enginedoesnotkill,thereisamalfunctioninthe
interlocksystemthatshouldbecorrectedbefore
beginningoperation.
PushingorTowingthe
Machine
Inanemergency,themachinecanbemovedforwardby
actuatingthebypassvalveinthevariabledisplacement
hydraulicpumpandpushingortowingthemachine.
Donotpushortowthemachineformorethan1/4
mile(0.4km).
Important:Donotpushortowthemachine
fasterthan2-3MPH(3-4.8km/h)becauseinternal
transmissiondamagemayoccur.Thebypassvalve
mustbeopenwheneverthemachineispushedor
towed.
1.Raisetheseatandremovethebatterycover.The
bypassvalveislocatedinfrontofthebattery
(Figure31).
2.Rotatethevalve1/4turnineitherdirectiontoopen
andallowoiltobypassinternally.Becauseuidis
bypassed,themachinecanbeslowlymovedwithout
damagingthetransmission.Notethepositionof
thevalvewhenopeningorclosing.
3.Closethebypassvalvebeforestartingtheengine.
However,donotexceed5to8ft-lb(7to11N⋅m)
torquetoclosethevalve.
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