Toro 30857 - Checking the Interlock Switches; Pushing or Towing the Machine

CAUTION
Shuttheengineoffandwaitforallmoving
partstostopbeforecheckingforoilleaks,loose
parts,andothermalfunctions.
StoppingtheEngine
Important:Allowenginetoidlefor5minutes
beforeshuttingitoffafterafullloadoperation.
Thisallowstheturbochargertocooldownbefore
shuttingtheengineoff.Failuretodosomaylead
toturbo-chargertrouble.
Note:Lowercuttingunitstothegroundwhenever
machineisparked.Thisrelievesthehydraulicloadfrom
thesystem,preventswearonsystempartsandalso
preventsaccidentalloweringofthecuttingunits.
1.MovethethrottlecontrolbackwardtotheSlow
position.
2.MovethePTOswitchtotheOffposition.
3.Settheparkingbrake.
4.RotatetheignitionkeytoOff.
5.Removethekeyfromtheswitchtoprevent
accidentalstarting.
CheckingtheInterlock
Switches
ServiceInterval:Beforeeachuseordaily
CAUTION
Ifsafetyinterlockswitchesaredisconnectedor
damagedthemachinecouldoperateunexpectedly
causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlockswitches
dailyandreplaceanydamagedswitchesbefore
operatingthemachine.
Themachinehasinterlockswitchesintheelectrical
system.Theseswitchesaredesignedtostoptheengine
whenoperatorgetsoffoftheseatwhenthetraction
pedalisdepressed.However,theoperatormaygetoff
oftheseatwhiletheengineisrunningandthetraction
pedalisinneutral.Althoughtheenginewillcontinue
torunifthePTOswitchisdisengagedandthetraction
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
seatandmovethePTOswitchtoOn.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.
Important:Ifthemachinemusttobepushedor
towedinreverse,thecheckvalveinthefour-wheel
drivemanifoldmustalsobebypassed.Tobypass
thecheckvalve,connectahoseassembly(Hose
PartNo.95-8843,CouplerFittingNo.95-0985
[Qty.2],andHydraulicFittingNo.340-77[Qty.2])
tothereversetractionpressuretestportandthe
reversefour-wheeldrivepressureport.
1.Openhoodandremovethecentershroud
2.Rotatethebypassvalve90°(1/4turn)ineither
directiontoopenandallowoiltobypassinternally
(
Figure19).Becauseuidisbypassed,themachine
canbeslowlymovedwithoutdamagingthe
transmission.Notethepositionofthevalvewhen
openingorclosing.
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