Toro 30413 - Checking the Interlock Switches; Pushing or Towing the Machine

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.
5.Sitontheseat,starttheengineandsetspeedrange
tolow.MovePTOswitchforwardtoengagecutting
units.
Important:Thecenterliftlevermust
momentarilybepushedtothelowerpositionto
enablePTOcircuitactuationbyPTOswitch.
•Raiseeitherwingcuttingunittothetransport
position.Thecuttingunitshouldturnoff.Ifthe
cuttingunitdoesnotstop,thereisamalfunctionin
theinterlocksystemthatshouldbecorrectedbefore
resumingoperation.
•Ifthecuttingunitisloweredagainthemotorshould
re-start.Ifthecuttingunitdoesnotre-start,thereis
amalfunctionintheinterlocksystemthatshouldbe
correctedbeforeresumingoperation.
•Raisethecentercuttingunittothetransport
position.Allthecuttingunitsshouldstoprunning
andnotre-engagewhenloweredtotheground.If
thecuttingunitdoesnotstopwhenitisraisedorif
itre-startswhenitislowered,thereisamalfunction
intheinterlocksystemthatshouldbecorrected
beforeresumingoperation.
•Withthecuttingunitsengaged,switchthespeed
rangefromlowtohigh.Thecuttingunitsshould
stop.Ifthecuttingunitsdonotstop,thereisa
malfunctionintheinterlocksystemthatshouldbe
correctedbeforeresumingoperation.
•Iftheoperatorrisesfromtheseatwiththecutting
unitsengagedand/orthetractionpedaloutof
neutral,thecuttingunitsmuststopinapproximately
onesecondandenginemustshutdownin
approximatelytwoseconds.Ifthecuttingunitsdo
notstopandtheenginedoesnotshutdown,thereis
amalfunctionintheinterlocksystemthatshouldbe
correctedbeforeresumingoperation.
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
(Figure28).
2.Rotatethevalve90degrees(1/4turn)ineither
directiontoopenandallowoiltobypassinternally.
Becauseuidisbypassed,themachinecanbeslowly
movedwithoutdamagingthetransmission.
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