Toro Pro Force 44552TE, Pro Force 44553, Pro Force 44552, Pro Force 44554 Service Manual

FormNo.18237SLRevA

ProForce

®

DebrisBlower

Models44552,44552TE,44553&44554

©2019—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420

OriginalInstructions(EN)

Contactusatwww.Toro.com.

AllRightsReserved

RevisionHistory

RevisionDateDescription

A

01/2019

InitialIssue

RevisionHistoryPage2

ProForce®DebrisBlower

18237SLRevA

ReaderComments

TheToroCompanyTechnicalAssistanceCentermaintainsacontinuouseffort
toimprovethequalityandusefulnessofitspublications.T odothiseffectively,
weencourageuserfeedback.Pleasecommentonthecompleteness,accuracy,
organization,usability ,andreadabilityofthismanual.

bye-mail:

[e-mail]

bymail:

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TheToroCompany
8111LyndaleAvenueSouth
Bloomington,MN55420-1196
Phone:[phone]

ProForce®DebrisBlower
18237SLRevA

Page3

ReaderComments

ReaderComments

Page4

ProForce®DebrisBlower

18237SLRevA

Preface

Thisservicemanualwaswrittenexpresslyforservicetechnicians.Basicshop
safetyknowledgeandmechanical/electricalskillsareassumed.TheT oro
Companyhasmadeeveryefforttomaketheinformationinthismanualcomplete
andcorrect.

Thepurposeofthispublicationistoprovidetheservicetechnicianwith
informationabouttroubleshooting,testing,andrepairingmajorsystemsand
components.Thismanualmayalsobespeciedforuseonnumerousproducts.
RefertotheT ableofContentsforalistofthesystemsandtherelatedtopics
coveredinthismanual.

RefertothemachineOperator’sManualforadditionalinformationabout
operating,maintaining,andadjustingthemachine.KeepacopyoftheOperator’s
Manuals,InstallationInstructions,andPartsCatalogforyourmachineandits
accessorieswiththisServiceManualforreference.Additionalcopiesofthe
Operator’sManuals,InstallationInstructionsandPartsCatalogsareavailable
atwww.toro.com

TheToroCompanyreservestherighttochangetheproductspecicationsor
thispublicationwithoutnotice.

.

ProForce®DebrisBlower
18237SLRevA

Page5

Preface

ServiceProcedureIcons

ThefollowingiconsappearthroughoutthisServiceManualtobringattentionto
specicimportantdetailsofaserviceprocedure.

CriticalProcess

Thisiconisusedtohighlight:

•installingsafetyequipment(shields,guards,seatbelts,brakesandR.O.P .S.

components)thatmayhavebeenremoved

•dimensionsorsettingsthatmustbemaintainedforpropermachineoperation

•aspecicfastenertighteningsequence

•componentorientationthatmaynotbeobvious

CriticalTorque

Thisiconisusedtohighlightanassemblytorquerequirementthatisdifferentthan
whatisrecommendedintheStandardT orqueTables;refertoStandardT orque

forDry,ZincPlated,andSteelFasteners(InchSeries)(page2–7)orStandard
TorqueforDry,ZincPlated,andSteelFasteners(MetricFasteners)(page2–8).

FluidSpecications

Thisiconisusedtohighlightuidspecicationsandcapacitiesthatareless
common,andmaynotappearonthemachineservicedecalorinthemachine
Operator’sManual.

Note:RefertotheservicedecalonthemachineandthemachineOperator’s
Manualforcommonlyuseduidspecicationsandcapacities.

Preface

Page6

ProForce®DebrisBlower

18237SLRevA

TableofContents

Preface................................................................................................................5

Chapter1:Safety............................................................................................1–1

SafetyInstructions.......................................................................................1–2

JackingInstructions.....................................................................................1–6

SafetyandInstructionalDecals....................................................................1–6

Chapter2:SpecicationsandMaintenance....................................................2–1

Specications...............................................................................................2–2

TorqueSpecications...................................................................................2–4

ShopSupplies............................................................................................2–10

SpecialT ools..............................................................................................2–12

Chapter3:Troubleshooting.............................................................................3–1

GEARS–TheSystematicApproachtoDening,DiagnosingandSolving

Problems......................................................................................................3–2

UsingtheOnboardDiagnosticLamp.............................................................3–3

StartingProblems.........................................................................................3–6

GeneralOperationProblems........................................................................3–8

Chapter4:Engine...........................................................................................4–1

GeneralInformation.....................................................................................4–2

Adjustments.................................................................................................4–4

ServiceandRepairs.....................................................................................4–6

Chapter5:ElectricalSystem...........................................................................5–1

GeneralInformation.....................................................................................5–2

ElectricalSystemQuickChecks....................................................................5–6

TestingtheElectricalComponents................................................................5–8

ServiceandRepairs...................................................................................5–31

Chapter6:BlowerAssembly...........................................................................6–1

GeneralInformation.....................................................................................6–2

ServiceandRepairs.....................................................................................6–3

Chapter7:Chassis..........................................................................................7–1

GeneralInformation.....................................................................................7–2

ServiceandRepairs.....................................................................................7–3

AppendixA......................................................................................................A–1

ElectricalDrawingDesignations....................................................................A–2

ElectricalSchematic(Models44552,44552TE,and44553).........................A–3

ElectricalSchematic(ModelNo.44554).......................................................A–4

EngineElectricalDiagram.............................................................................A–5

WireHarnessDrawing-Main.........................................................................A–6

WireHarnessDiagram-Main.........................................................................A–7

WireHarness-Trailer(ModelNo.44553)......................................................A–8

WireHarness-T etheredControlBox(ModelNo.44554)...............................A–9

WireHarness-T etherAdapter(ModelNo.44554).......................................A–10

AdditionalReferenceMaterials

KOHLER Command Pro CH740 Service Manual

ProForce®DebrisBlowerPage7Preface
18237SLRevA

Preface

Page8

ProForce®DebrisBlower

18237SLRevA

Chapter1

Safety

TableofContents

SafetyInstructions................................................................................................................................1–2

ThinkSafetyFirst...............................................................................................................................1–3

JackingInstructions..............................................................................................................................1–6

SafetyandInstructionalDecals............................................................................................................1–6

ProForce®DebrisBlower
18237SLRevA

Page1–1

Safety

SafetyInstructions

DANGER

Thissafetysymbolmeansdanger.Whenyouseethissymbol,
carefullyreadtheinstructionsthatfollow.Failuretoobeythe
instructionscouldkillorcauseseriouspermanentinjuryordisability .

WARNING

Thissafetysymbolmeanswarning.Whenyouseethissymbol,
carefullyreadtheinstructionsthatfollow.Failuretoobeythe
instructionscanresultinseriousinjury.

CAUTION

Thissafetysymbolmeanscaution.Whenyouseethissymbol,
carefullyreadtheinstructionsthatfollow.Failuretoobeythe
instructionscanresultinminortomoderateinjury.

IMPORTANT

TheImportantnoticewillgivetheimportantinstructionswhichyou
mustfollowtopreventdamagetothesystemsorcomponentson
themachine.

Note:ANotewillgivethegeneralinformationaboutthecorrectoperation,

maintenance,service,testing,orrepairofthemachine.

Safety:SafetyInstructions

Page1–2

ProForce®DebrisBlower

18237SLRevA

ThinkSafetyFirst

ToroProductsaretestedandcertiedforcompliancewithexistingsafety
standardsandspecications.Althoughhazardcontrolandaccidentprevention
arepartiallydependentuponthedesignandcongurationofthemachine,
hazardcontrolandaccidentpreventionarealsodependentupontheawareness,
concernandpropertrainingofthepersonnelinvolvedintheoperation,transport,
maintenance,andstorageofthemachine.Improperuseormaintenanceofthe
machinecanresultininjuryordeath.

WARNING

Toreducethepotentialofinjuryordeath,complywiththesafety
instructionsinthismanual,aswellasinformationfoundinthe
Operator’sManualsandtheOperatorandSafetyTrainingVideos
foundonwww.toro.com

•Avoidunexpectedstartingoftheengine…

Alwaysturnofftheengine,removetheignitionkeyanddisconnectthe
sparkplugwire(s)beforecleaning,adjusting,orrepair.

•Avoidlacerationsandamputations…

Stayclearofallmovingpartswhenevertheengineisrunning.Treatall
normallymovingpartsasiftheyweremovingwhenevertheengineis
runningorhasthepotentialtostart.

•Avoidburns…

Donottouchtheengine,mufer,orothercomponents,whichmaybehot
duringoperation,whiletheunitisrunningorshortlyafterithasbeen
running.

•Avoidresandexplosions…

Useextremecareinhandlingfuel.Fuelisammableanditsvaporsare
explosive.

–Extinguishallcigarettes,cigars,pipes,andothersourcesofignition.
–Avoidspillingfuelandneversmokewhileworkingwithanytypeoffuel

orlubricant.
–Wipeupanyspilledfueloroilimmediately.
–Neverremovethefuelcaporaddfuelwhentheengineisrunning.
–Alwaysuseapproved,labeledcontainersforstoringortransportingfuel

andlubricants.
–Donotaddordrainfuelinanenclosedspace.
–Donotstorethemachineorfuelcontainerwherethereisanopename,

spark,orpilotlight,suchasonawaterheaterorotherappliance.

•Avoidasphyxiation…

Donotoperateanengineinaconnedareawithoutproperventilation.

•Avoidinjuryfrombatteries…

–Batteryacidispoisonousandcancauseburns.Avoidcontactwithskin,

eyesandclothing.
–Batterygasescanexplode.Keepcigarettes,sparksandamesaway

fromthebattery.

•Avoidinjuryduetoinferiorparts…

Useonlyoriginalequipmentpartstoensurethatimportantsafetycriteria
aremet.

.

ProForce®DebrisBlower
18237SLRevA

Page1–3

Safety:SafetyInstructions

ThinkSafetyFirst(continued)

•Avoidinjurytobystanders…

Alwayscleartheareaofbystandersbeforestartingortestingpowered
equipment.

•Avoidinjuryduetoprojectiles…

Alwayscleartheareaofsticks,rocksoranyotherdebristhatcouldbe
pickedupandthrownbythepoweredequipment.

•Avoidmodications…

Neveralterormodifyanypartunlessitisafactoryapprovedprocedure.

•Avoidunsafeoperation…

Alwaystestthesafetyinterlocksystemaftermakingadjustmentsor
repairsonthemachine.RefertotheElectricalsectioninthismanual
formoreinformation.

•Avoidelectricalshock…

–Nevertouchelectricalwiresorcomponentswhiletheengineisrunning.

Theycanbesourcesofshock.
–De-energizethesystemifyouarehavingtodorepairs.
–Iftestingelectricalcomponentsensureyouareworkinginadry

environment.

•HydraulicSystemprecautions...

–Releaseallpressureinthehydraulicsystembeforeperforminganywork

onthesystem.
–Keepyourbodyandhandsawayfrompin-holeleaksornozzlesthateject

hydraulicuidunderhighpressure.Donotuseyourhandstosearchfor

leaks.Hydraulicuidescapingunderpressurecanhavesufcientforce

topenetratetheskinandcauseseriousinjury .
–Seekmedicalattentionrightawayifhydraulicuidgetsintheskin.

•Usepersonalprotectiveequipment…

–Useappropriatepersonalprotectiveequipment(PPE)forprotecting

yourselffrompotentialhazardsintheenvironmentinwhichyouwillwork.
–EachprocessoutlinedinthismanualmayneeddifferentPPEtoprotect

theserviceperson.UsetheproperPPEforthetaskathand.

•Usingtools…

–Alltoolsshouldbeinproperworkingorder.Donotusetoolsthatare

brokenorindisrepair.
–Usethepropertoolfortheproperapplication.

•Usinglifts,hoists,andjacks…

–Alllifts,hoists,andjacksshouldbeusedinaccordancewiththe

manufacturerinformation.
–Inspectlifts,hoists,andjackspriortouse.
–Donotoverloadlifts,hoists,andjacks.
–Donotworkunderasuspendedload.
–Ensurechockblocksareusedonequipmentthatcanmove.
–Useliftsorjacksandjackstandsthatareratedtosupportthetotalweight

ofthemachineandanyattachments.
–Donotrelyonjackstosupportthemachine.
–Ifyouareunfamiliarwithanylifts,hoistsorjacks,donotusethemuntil

youknowhowtooperatethemcorrectly.

•Usingreextinguishers…

Safety:SafetyInstructions

Page1–4

ProForce®DebrisBlower

18237SLRevA

ThinkSafetyFirst(continued)

Usetheproperclassofreextinguisherincaseofre.

Ensurereextinguishersareservicedregularly,andreplaceanyre
extinguishersthataredischargedorinusebeyondtheirexpirationdates.

–ClassAreextinguishersareforordinarycombustiblematerialssuch

aspaper,wood,cardboard,andmostplastics.Thenumericalratingon
thesetypesofextinguishersindicatestheamountofwateritholdsand
theamountofreitcanextinguish.Geometricsymbol(greentriangle).

–ClassBreextinguishersareforresthatinvolveammableor

combustibleliquidssuchasgasoline,kerosene,greaseandoil.The
numericalratingforclassBextinguishersindicatestheapproximate
numberofsquarefeetofreitcanextinguish.Geometricsymbol(red
square).

–ClassCreextinguishersareforresthatinvolveelectricalequipment

suchasappliances,wiring,circuitbreakersandoutlets.Neverusewater
toextinguishclassCres-theriskofelectricalshockisfartoogreat!
ClassCextinguishersdonothaveanumericalrating.TheCclassication
meanstheextinguishingagentisnon-conductive.Geometricsymbol
(bluecircle).

–ClassABCreextinguishersareadrychemicaltypeusedformultiple

purposes.Seeabovedescriptionsforadditionalinformation.

ProForce®DebrisBlower
18237SLRevA

Page1–5

Safety:SafetyInstructions

JackingInstructions

CAUTION

Failingtoproperlysupportthemachinewithappropriatejackstands
cancausethemachinetomoveorfallandcanresultinpersonal
injury.

Whenchangingtheattachments,tires,orperformingotherservices,
dothefollowingsteps:

•Usecorrectblocks,hoists,andjackstoraiseandsupportthe
machine.

•Parkthemachineonasolidlevelsurface,suchasaconcrete
oor.

•Beforeyouliftthemachine,removealltheattachmentsthatmay
interferewiththesafeandcorrectliftofthemachine.

•Alwaysblockthewheelswithchocks.

•Useappropriatejackstandstosupporttheraisedmachine.

•Donotusetheaxleasajackingpoint.

1.Positionthemachineonalevelsurface.Ensurethattheblowerengineis
shutoffandremovethekeyfromthekeyswitch.Blocktheblowerwheels
withchockstopreventthemachinefrommoving,orleavetheblower
attachedtoatowvehicleifpossible.Engagethetowvehicleparkingbrake,
shutoffthetowvehicleengine,andremovethekeyfromthetowvehicle
keyswitchifapplicable.

g233699

1.Wheel2.Framejackingpoint

2.Positionthejacksecurelyunderthemainframeoftheblower.Donotuse
theaxleasajackingpoint.

3.Carefullyraisethemachineofftheground.

4.Positionjackstandsunderthemainframetosupportthemachine.

SafetyandInstructionalDecals

Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocated
nearanyareaofpotentialdanger.Ifanydecalbecomesillegibleordamaged,
installanewdecal.DecalpartnumbersarelistedinyourPartsCatalog,
Operator’sManual,andaccessoryInstallationInstructions.Orderreplacement
decalsfromAuthorizedToroDistributor.

Safety:JackingInstructions

Page1–6

Figure1

ProForce®DebrisBlower

18237SLRevA

Chapter2

SpecicationsandMaintenance

TableofContents

Specications.......................................................................................................................................2–2

OverallDimensions............................................................................................................................2–2

Engine................................................................................................................................................2–3

Chassis..............................................................................................................................................2–3

TorqueSpecications...........................................................................................................................2–4

CalculatingtheT orqueV aluesWhenUsingaDrive-AdapterWrench.................................................2–5

IdentifyingtheFastener......................................................................................................................2–6

StandardT orqueforDry,ZincPlated,andSteelFasteners(InchSeries)............................................2–7

StandardT orqueforDry,ZincPlated,andSteelFasteners(MetricFasteners)...................................2–8

OtherT orqueSpecications...............................................................................................................2–9

ConversionFactors............................................................................................................................2–9

ShopSupplies....................................................................................................................................2–10

SpecialT ools......................................................................................................................................2–12

ProForce®DebrisBlower
18237SLRevA

Page2–1

SpecicationsandMaintenance

Specications

OverallDimensions

g274940

SpecicationsandMaintenance:Specications

Figure2

Page2–2

ProForce®DebrisBlower

18237SLRevA

Engine

ItemDescription

Make/DesignationKohlerCH740S,2-cylinder,aircooled,

BorexStroke83x67mm(3.27x2.64inches)

Totaldisplacement

Compressionratio

Governor

Lowidlespeed1,700to1,900rpm

Highidlespeed

CarburetorFloatfeed,xedmainjet,andsolenoidfuelshut-off

Fuel

FuelpumpPulsetype

Fueltankcapacity

AircleanerDualelement

LubricationsystemPressurelubricationwithoilcooler

Crankcase-oilcapacity2.0L(67oz)

Engineoil

IgnitionsystemFlywheelmagneto,twinelectronicarmatures

SparkplugChampion®RC12YC,Champion®Platinum

Sparkpluggap0.76mm(0.030inch)

Starter12VDC,solenoidshift

Alternator

Engineweight(dry)53kg(116lb)

3,550to3,650rpm(withnonozzlebackpressure)

unleadedgasolinefuelwithanoctane

RefertotheOperator’sManual

OHVgasolineengine

725cm

ratingof87orhigher

18.9L(5USgallons)

withignitionadvance

3071orequivalent

3

(44in3)

Electronic

12VDC,15A

9.0:1

Chassis

ProForce®DebrisBlower
18237SLRevA

ItemDescription

Tirespressure(20×10-8,4ply ,tubeless)96.5kPa(14psi)

Wheellugnuttorque

Page2–3

SpecicationsandMaintenance:Specications

95to122N∙m(70to90ft-lb)

TorqueSpecications

Therecommendedfastenertorquevaluesarelistedinthefollowingtables.For
criticalapplications,asdeterminedbyT oro,eithertherecommendedtorqueora
torquethatisuniquetotheapplicationisclearlyidentiedandspeciedinthis
ServiceManual.

Thesetorquespecicationsfortheinstallationandtighteningofthefastenerswill
applytoallthefastenerswhichdonothaveaspecicrequirementidentiedin
thisServiceManual.Thefollowingfactorsmustbeconsideredwhenapplying
thetorque:cleanlinessofthefastener,useofathreadsealant(e.g.,Loctite),
degreeoflubricationonthefastener,presenceofaprevailingtorquefeature
(e.g.,Nylocknut),hardnessofthesurfaceunderneaththeheadofthefastener,
orsimilarconditionwhichaffectstheinstallation.

Asnotedinthefollowingtables,thetorquevaluesshouldbereducedby25%

forlubricatedfastenersorfastenerswithawetthreadlockingcompound
appliedtoachievethesimilarstressasadryfastener.Thetorquevaluesmust

bereducedwhenthefasteneristhreadedintothealuminumorbrass.The
specictorquevalueshouldbedeterminedbasedonthealuminumorbrass
materialstrength,fastenersize,lengthofthreadengagement,etc.

Thestandardmethodofcheckingthetorquecanbeperformedbymarkingaline
onthefastener(headornut)andmatingpart,thenbackoffthefastener1/4
ofaturn.Measurethetorquenecessarytotightenthefasteneruntilthelines
matchup.

SpecicationsandMaintenance:T orqueSpecications

Page2–4

ProForce®DebrisBlower

18237SLRevA

CalculatingtheTorqueValuesWhenUsingaDrive-AdapterWrench

g205924

Figure3

TorqueConversionFactor=A/B

1.Torquewrench

2.Drive-adapterwrench(crowsfoot)4.B(effectivelengthoftorquewrenchand

3.A(effectivelengthoftorquewrench)

drive-adapterwrench)

Usingadrive-adapterwrench(e.g.,crowfootwrench)inanypositionotherthan
90°and270°totheframeofthetorquewrenchwillaffectthetorquevalue
measuredbythetorquewrenchbecauseoftheeffectivelength(lever)ofthe
torquewrenchchanges.Whenusingatorquewrenchwithadrive-adapter
wrench,multiplythelistedtorquerecommendationbythecalculatedtorque
conversionfactor(Figure3)todeterminepropertighteningtorque.Whenusinga
torquewrenchwithadrive-adapterwrench,thecalculatedtorquewillbelower
thanthelistedtorquerecommendation.

Example:Themeasuredeffectivelengthofthetorquewrench(distancefrom
thecenterofthehandletothecenterofthesquaredrive)is457mm(18inches).

Themeasuredeffectivelengthofthetorquewrenchwiththedrive-adapter
wrenchinstalled(distancefromthecenterofthehandletothecenterofthe
drive-adapterwrench)is483mm(19inches).

Thecalculatedtorqueconversionfactorforthistorquewrenchwiththis
drive-adapterwrenchwouldbe18/19=0.947.

Ifthelistedtorquerecommendationforafasteneris103to127N∙m(76to94
ft-lb),thepropertorquewhenusingthistorquewrenchwithadrive-adapter
wrenchwouldbe98to121N∙m(72to89ft-lb).

ProForce®DebrisBlower
18237SLRevA

Page2–5

SpecicationsandMaintenance:T orqueSpecications

IdentifyingtheFastener

g206089

Figure4

MetricBoltsandScrews

1.Class8.82.Class10.9

g206088

Figure5

InchSeriesBoltsandScrews

1.Grade12.Grade53.Grade8

FastenerswithaLockingFeature

IMPORTANT

Ifafastenerwithalockingfeatureorpreviouslyappliedthread
lockingcompoundisreused,cleanthefastenerthreadsandapply
newthreadlockertothefastenerduringinstallation.

Lockingfeaturesaredesignedtocreatefrictionandpreventafastenerfrom
loosening.Lockingfeaturescanbefoundonexternallyorinternallythreaded
fasteners.Commonexamplesareplasticinsertsincorporatedintothefastener
andpre-applied“dry”threadlockingcompound.Keepinmind,afastenerwith
alockingfeatureusuallymeanstherewillbefrictionduringinitialinstallation
andduringremoval.

Tororecommendsreplacingfastenerswithalockingfeatureoncetheyhave
beenremovedbecausetheeffectivenessofthelockingfeaturediminisheswith
eachreuse.Ifitisnecessarytoreuseafastenerwithalockingfeature;applya
threadlockingcompound(Loctiteforexample)tothefastenerduringinstallation.
Usetheappropriatestrengthandtypeofthreadlockingcompoundbasedon
application,fastenersizeorinformationfoundintheproductOperatorsManual,
ServiceManualorInstallationInstructions.

SpecicationsandMaintenance:T orqueSpecications

Page2–6

ProForce®DebrisBlower

18237SLRevA

StandardTorqueforDry,ZincPlated,andSteelFasteners(Inch Series)

ThreadSizeGrade1,5

#6-32UNC

#6-40UNF

#8-32UNC

#8-36UNF

#10-24

UNC

#10-32

UNF

1/4-20UNC

1/4-28UNF

5/16-18

UNC

5/16-24

UNF

3/8-16UNC

3/8-24UNF

7/16-14

UNC

7/16-20

UNF

1/2-13UNC

1/2-20UNF

5/8-1 1UNC

5/8-18UNF

3/4-10UNC

3/4-16UNF

7/8-9UNC

7/8-14UNF

and8with

ThinHeight

Nuts

in-lbin-lbN∙cmin-lbN∙cmin-lbN∙cm

10±213±2147±23

13±225±5282±56

18±230±5339±56

48±753±7599±79100±101130±1 13140±151582±169

53±765±10734±113115±121299±136160±171808±192

115±15105±151 186±169200±252260±282300±303390±339

138±17128±171146±192225±252542±282325±333672±373

ft-lbft-lb

16±216±222±330±341±443±558±7

17±218±224±335±447±550±668±8

27±327±337±450±568±770±795±9

29±329±339±455±675±877±8104±1 1

30±348±765±975±8102±1 1105±1 1142±15

32±453±772±985±9115±12120±12163±16

65±1088±12119±16150±15203±20210±21285±28

75±1095±15129±20170±18230±24240±24325±33

93±12140±20190±27265±27359±37375±38508±52

115±15165±25224±34300±30407±41420±43569±58

140±20225±25305±34430±45583±61600±60813±81

155±25260±30353±41475±48644±65667±66904±89

SAEGrade1Bolts,Screws,

Studs,andSemswith

RegularHeightNuts

(SAEJ995Grade2or

StrongerNuts)

SAEGrade5Bolts,Screws,

Studs,andSemswith

RegularHeightNuts

(SAEJ995Grade2or

StrongerNuts)

15±2169±2323±3262±34

17±2192±2325±3282±34

29±3328±3441±5463±56

31±4350±4543±5486±56

42±5475±5660±6678±68

48±5542±5668±7768±79

N∙m

ft-lb

N∙m

SAEGrade8Bolts,Screws,

Studs,andSemswith

RegularHeightNuts

(SAEJ995Grade2or

StrongerNuts)

ft-lb

N∙m

Note:Reducethetorquevalueslistedinthetableaboveby25%forlubricatedfasteners.Lubricated

fastenersaredenedasthreadscoatedwithalubricant,suchasengineoil,orathreadlocking
compoundsuchasLoctite.

Note:Thetorquevaluesmustbereducedwheninstallingthefastenersintothreadedaluminumor
brass.Thespeciedtorquevalueshouldbedeterminedbasedonthealuminumorbasematerial
strength,fastenersize,lengthofthreadengagement,etc.

Note:ThenominaltorquevalueslistedaboveforGrade5and8fastenersarebasedon75%ofthe
minimumproofloadspeciedinSAEJ429.Thetoleranceisapproximately±10%ofthenominal
torquevalue.Thethinheightnutsincludejamnuts.

ProForce®DebrisBlower
18237SLRevA

Page2–7

SpecicationsandMaintenance:T orqueSpecications

StandardTorqueforDry,ZincPlated,andSteelFasteners(Metric Fasteners)

ThreadSize

M5X0.857±6in-lb644±68N∙cm78±8in-lb881±90N∙cm

M6X1.096±10in-lb1085±113N∙cm133±14in-lb1503±158N∙cm

M8X1.25

M10X1.5

M12X1.75

M16X2.0

M20X2.5

Class8.8Bolts,Screws,and

StudswithRegularHeightNuts

(Class8orStrongerNuts)

19±2ft-lb

38±4ft-lb

66±7ft-lb

166±17ft-lb

325±33ft-lb

26±3N∙m

52±5N∙m

90±10N∙m

225±23N∙m

440±45N∙m

Class10.9Bolts,Screws,and

StudswithRegularHeightNuts

(Class10orStrongerNuts)

28±3ft-lb

54±6ft-lb

93±10ft-lb

229±23ft-lb

450±46ft-lb

38±4N∙m

73±8N∙m

126±14N∙m

310±31N∙m

610±62N∙m

Note:Reducethetorquevalueslistedinthetableaboveby25%forlubricatedfasteners.Lubricated
fastenersaredenedasthreadscoatedwithalubricant,suchasengineoil,orathreadsealant,such
asLoctite.

Note:Thetorquevaluesmustbereducedwheninstallingthefastenersintothreadedaluminumor
brass.Thespeciedtorquevalueshouldbedeterminedbasedonthealuminumorbasematerial
strength,fastenersize,lengthofthreadengagement,etc.

Note:Thenominaltorquevalueslistedabovearebasedon75%oftheminimumproofloadspeciedin
SAEJ1199.Thetoleranceisapproximately±10%ofthenominaltorquevalue.

SpecicationsandMaintenance:T orqueSpecications

Page2–8

ProForce®DebrisBlower

18237SLRevA

OtherTorqueSpecications

SAEGrade8SteelSetScrews

ThreadSize

1/4-20UNC

5/16-18UNC

3/8-16UNC35±10ft-lb18±3ft-lb

1/2-13UNC75±15ft-lb50±10ft-lb

ThreadCuttingScrews(ZincPlatedSteel)

ThreadSizeBaselineTorque**

No.6-32UNC

No.8-32UNC

No.10-24UNC

1/4-20UNC

5/16-18UNC

3/8-16UNC

SquareHeadHexSocket

140±20in-lb73±12in-lb

215±35in-lb145±20in-lb

Type1,Type23orT ypeF

RecommendedTorque

20±5in-lb

30±5in-lb

38±7in-lb

85±15in-lb

110±20in-lb

200±100in-lb

WheelBoltsandLugNuts

ThreadSizeRecommendedTorque*

7/16-20UNFGrade565±10ft-lb

1/2-20UNFGrade580±10ft-lb

M12X1.25Class8.880±10ft-lb

M12X1.5Class8.880±10ft-lb

88±14N∙m

108±14N∙m

108±14N∙m

108±14N∙m

*Forsteelwheelsandnon-lubricatedfasteners

ThreadCuttingScrews(ZincPlatedSteel)

ThreadSize

No.6182020±5in-lb

No.8151830±5in-lb

No.10121638±7in-lb

No.12111485±15in-lb

ThreadsperInch

BaselineTorque**

TypeATypeB

**Theholesize,materialstrength,materialthickness,andmaterialnishmustbe
consideredwhendeterminingthespeciedtorquevalues.Allthetorquevalues
arebasedonthenon-lubricatedfasteners.

ConversionFactors

ProForce®DebrisBlower
18237SLRevA

in-lbX1 1.2985=N∙cmN∙cmX0.08851=in-lb

ft-lbX1.3558=N∙mN∙mX0.7376=ft-lb

Page2–9

SpecicationsandMaintenance:T orqueSpecications

ShopSupplies

TheproceduresfoundinthisServiceManualmayrecommendtheuseof
commonlyusedshopsupplies(lubricants,sealants,andadhesives).A
symboldenotingtheuseofashopsupplymayappearinguresthatsupport
aprocedure.Alwaysrefertothewrittenprocedureforspecicinformation
regardingthetypeandtheapplicationofashopsupply .

IMPORTANT

Alwaysfollowmanufacturersinstructionswhenusingorstoring
shopsupplies.

ShopSupplies

ANTI-SEIZELUBRICANT

Usedtopreventcorrosion,galling,andseizurebetweenmetalparts.Most
oftenappliedtoshaftsandboresduringassembly.Unlessotherwise
specied,highviscosityregulargradelithium-graphitebasedanti-seize
lubricantshouldbeused.

GREASE

Canbeusedtopre-ll(pack)bearings,boots,andsealsbeforeassembly,
easeinstallationofcomponentsduringassembly,orllcavitiesbetween
movingpartsthroughgreasettingsafterassembly .Unlessotherwise
noted,refertothemachineOperator’sManualorInstallationInstructions
forgreasespecications.

THREADLOCKINGCOMPOUND(threadlocker)

Usedtolockthreadedfastenersinposition.Availableinlow,mediumand
highstrengthforvarioussizefastenersandapplications.Mostthread
lockingcompoundsareappliedimmediatelypriortofastenerinstallation.
Somethreadlockingcompoundsusea“Wicking”feature,andcanbe
appliedafterfastenerinstallation.Mostthreadlockingcompoundsallow
thefastenertoberemovedwithstandardtoolsoncecured.Highstrength
threadlockingcompoundsmayrequireapplyingheattothefastenerand
thesurroundingareatoallowfastenerremoval.

Note:Somefastenershaveadrythreadlockingcompoundpre-applied
(Patch-Loc)sonoadditionalthreadlockingcompoundisnecessarywhen
installinga“new”fastener .Thesefastenersaredesignedtoberemoved
andre-installedonlyoncebeforeapplyingadditionalthreadlocking
compoundisnecessary .

RETAININGCOMPOUND(bearingsandsleeves)

Anadhesiveusedtosecurebearings,bushings,andcylindricalparts
intohousingsorontoshafts.Whencured,bearingandsleeveretaining
compoundllsthegapbetweenmatingpartswithahardresinthat
increasesloaddistributionandprotectsagainstcorrosion.

ADHESIVE

Usedtosecureavarietyofcomponentsimmediatelypriortoassembly.
Mayberecommendedforinstallingnewcomponentsorwhenreusinga
componentthathadapre-appliedadhesivesuchashoodseals,mouldings,
andweather-stripping.

THREADSEALANT

.

SpecicationsandMaintenance:ShopSupplies

Usedtosealthreadedttingsandsensorsfromair,fuel,andoilpressure
leaksandpreventgallingandseizurebetweenthreadedparts.Athread
sealantinpastermispreferredoversealanttape.Thesealantshould
remainsemi-pliabletoallowforcomponentremovalwithstandardtools.
Somethreadsealantsmayrequiretheuseofacleanerorprimerprior
touse.

Page2–10

ProForce®DebrisBlower

18237SLRevA

ShopSupplies(continued)

GASKETCOMPOUND

Usedtocreateasealbetweenmatingparts.Gasketcompoundsmay
beusedwithorwithoutthepresenceofapre-formedgasket.Gasket
compoundsmaybesolventorsiliconebased,andcurewhenexposed
toairordesignedtocureinanair-lessenvironment(anaerobic).Most
gasketcompoundsaredesignedtobeappliedtocleansurfacesfreeofoil,
chemicalresidueandpreviouslyusedgasketsorgasketcompounds.

SILICONESEALANT

Designedforabroadvarietyofsealingandbondingrequirements,
siliconesealantsareusuallyroomtemperaturevulcanizing(RTV)which
formaexiblesiliconerubberthatbondstoawidevarietyofsmoothor
porousmaterialswhencured.Standardsiliconesealantsaredesignedto
performintemperaturesfrom-51°Fto232°C(-60°Fto400°F),whilehigh
temperaturevariantscanpreformintemperaturesupto343°C(650°F).

ProForce®DebrisBlower
18237SLRevA

Page2–11

SpecicationsandMaintenance:ShopSupplies

SpecialTools

Multimeter

Obtainthistoollocally

Themetercantesttheelectrical
componentsandcircuitsforcurrent,
resistance,orvoltage.

Note:Useadigitalmultimeterwhen
testingtheelectricalcircuits.Thehigh
impedance(internalresistance)ofadigital
meterinthevoltagemodeensuresthat
theexcesscurrentisnotallowedthrough
themeter.Thisexcesscurrentcan
damagethecircuitsthatarenotdesigned
tocarryit.

BatteryTerminalProtector

ToroPartNo.107-0392

Usethisaerosolsprayonthebattery
terminals,ringterminals,andforkterminals
toreducecorrosionproblems.Applythe
terminalprotectortotheconnectionafter
yousecurethebatterycable,ringterminal,
orforkterminal.

DielectricGel

ToroPartNo.107-0342

Usethedielectricgeltoprevent
corrosionofunsealedconnection
terminals.Toensurecomplete
coatingoftheterminals,liberally
applythegeltothecomponent
andwireharnessconnector,plug
theconnectorintothecomponent,
disconnecttheconnector,apply
thegeltobothsurfacesagain,and
connecttheharnessconnector
tothecomponentagain.The
connectorsmustbefullypacked
withgelforeffectiveresults.

Note:Donotusethedielectricgel
onthesealedconnectionterminals
asthegelcanunseattheconnector
sealsduringassembly.

SpecicationsandMaintenance:SpecialT ools

Page2–12

ProForce®DebrisBlower

18237SLRevA

OffsetWrench

ToroPartNo.TOR6006

Theoffsetwrenchisusedtotighten
thenutthatsecurestheblower
rotorassemblytothefanshaft.Use
with1/2inchtorquewrenchatright
angletotheoffsetwrenchhandleto
ensurethatpropertorqueisapplied
tothenut.

ShaftAlignmentT ool

ToroPartNo.137–6616

Theshaftalignmenttoolisusedto
aligntheengineoutputshaftwiththe
blowershaftiftheengine,blower
driveshaft,orblowerassemblyis
removed.Thetoolalsosetsthe
properdistancebetweentheengine
andblowerassembly.

ProForce®DebrisBlower
18237SLRevA

Page2–13

SpecicationsandMaintenance:SpecialT ools

SpecicationsandMaintenance:SpecialT ools

Page2–14

ProForce®DebrisBlower

18237SLRevA

Chapter3

Troubleshooting

TableofContents

GEARS–TheSystematicApproachtoDening,DiagnosingandSolvingProblems.............................3–2

GatherInformation.............................................................................................................................3–2

EvaluatePotentialCauses.................................................................................................................3–2

AssessPerformance..........................................................................................................................3–2

Repair................................................................................................................................................3–2

SolutionConrmation.........................................................................................................................3–2

UsingtheOnboardDiagnosticLamp.....................................................................................................3–3

EnteringDiagnosticMode..................................................................................................................3–3

ClearingActiveMachineFaults..........................................................................................................3–5

ExitingDiagnosticMode.....................................................................................................................3–5

StartingProblems..................................................................................................................................3–6

GeneralOperationProblems.................................................................................................................3–8

TheinformationInthischapterisintendedtohelptroubleshootmachineoperationissues.Keepinmind
therecanbemorethanonecauseforamachinemalfunction.

ProForce®DebrisBlower
18237SLRevA

Page3–1Troubleshooting

GEARS–TheSystematicApproachtoDening,
DiagnosingandSolvingProblems

GatherInformation

•Informationreportedbythecustomer

•Informationobservedbyyou

•Establishthewhat,whereandwhenoftheissue

EvaluatePotentialCauses

Considerpossiblecausesoftheproblemtodevelopahypothesis

•Narrowdownthefocusoftheproblem

AssessPerformance

•Ensureyouhaveallthenecessarytoolsfortesting

•Testallpotentialcausesofthefailure

•Reevaluateandcreateanewhypothesisifnecessary

Repair

•Returntheunittoservicebyrepairing,rebuildingorreplacing

SolutionConrmation

•Didtheissuegoaway

•Wastherootcauseoftheissuecorrectlyrepaired

•Arethereanyothernewsymptoms

Troubleshooting:GeneralOperationProblems

Page3–2

ProForce®DebrisBlower

18237SLRevA

UsingtheOnboardDiagnosticLamp

Machineswithwirelesshandheldremotecontrol(Models44552,44552TE,and

44553)haveadiagnosticlightlocatedonthecontroltowerbelowthehourmeter.
ThediagnosticlightisanoutputoftheT oroElectronicController(TEC)that
indicatesnormalmachineoperationorthepresenceofactivemachinefaults.
AfteryouturnthekeytotheRUNposition,thediagnosticlightilluminatesfor5
seconds,turnsofffor5seconds,andthenashesuntilyoustarttheenginewith
thekeyswitchorpushabuttononthehandheldremote.

Thediagnosticlightwillashrapidlyifnosignalfromthehandheldremotehas
beenreceivedwithin10secondsofsettingthekeyswitchtotheRUNposition,
ifthehandheldremoteisoutofrange,haslowbatteries,orisnotassociated
totheRF2CANmodule.Thediagnosticlightshouldilluminatewhileabutton
onthehandheldremoteispressed.

IfthekeyswitchissettotheRUNpositionandthediagnosticlightturnsonfor5
secondsthenstartsashingrapidly(withorwithoutapause)anactivemachine
faultexists.

EnteringDiagnosticMode

ProForce®DebrisBlower
18237SLRevA

g279310

Figure6

1.Controltower3.Shuntconnectors

2.Diagnosticlight4.Tetheredcap

1.SetthekeyswitchtotheOFFposition.

2.Locatethediagnosticshuntconnectors,removethetetheredcapand
connecttheshuntconnectorstogether.

3.SetthekeyswitchtotheRUNposition.

4.Countandrecordtheashpatternofthediagnosticlight.

Page3–3

Troubleshooting:GeneralOperationProblems

EnteringDiagnosticMode(continued)

Note:Iftherearemultiplemachinefaultsactive,eachfaultwillashfollowed

byalongpause.Aftereachactivefaultshasbeendisplayed,thefault
sequencewillrepeat.Ifnoactivefaultsexist,thediagnosticlightwillash
continuouslyoncepersecond.

Fault
Code

11

12

13

14

15

DiagnosticLampFlash
Pattern

Flashonce–pause–ash
once,longpausethen
repeatordisplaynextfault

Flashonce–pause–ash
twice,longpausethen
repeatordisplaynextfault

Flashonce–pause–ash
threetimes,longpause
thenrepeatordisplaynext
fault

Flashonce–pause–ash
fourtimes,longpausethen
repeatordisplaynextfault

Flashonce–pause–ash
vetimes,longpausethen
repeatordisplaynextfault

FaultDescription

Communicationbetween
theTECandRF2CAN
modulehasbeenlost

Incompatiblesoftware
existsononeormoreof
thecontrolsystemnodes
(TEC,RF2CANmodule,
andhandheldremote)

Wrongproducthandheld
remotebeingassociated

EnergizetoRun(ETR)
circuitwasinterrupted
duetoalowoilpressure
conditionfor10seconds

EnergizetoRun(ETR)
circuitwasinterrupteddue
tolowvoltage(lessthan

5.5V)

CorrectiveAction

Thewireharness
connectorattheTEC
orattheRF2CANmodule
isloose,corroded,or
damaged

TheRF2CANmodule
circuitwiringisdamaged;
refertoAppendixA(page

A–1)

RF2CANmodulemaybe
damaged,contactyour
authorizedT oroDistributor

Associatethehandheld
remote;refertothe
machineOperator’s
Manual

Reloadthemachine
software,contactyour
authorizedT oroDistributor

AlthoughtheProSweep
handheldremotemay
looksimilar,itcannotbe
associatedtothePro
ForceDebrisBlower
RF2CANmodule.Use
aProForcehandheld
remoteforassociation

Checkandadjusttheoil
levelasnecessary

Testtheengineoil
pressureswitchand
replaceifnecessary

Testthebatterycondition,
Chargethebatteryand
replaceifnecessary

Testtheenginevoltage
regulator/rectierand
replaceifnecessary

Testtheenginealternator
andreplaceifnecessary

Troubleshooting:GeneralOperationProblems

5.SetthekeyswitchtotheOFFposition.

Page3–4

ProForce®DebrisBlower

18237SLRevA

ClearingActiveMachineFaults

1.Resolvetheactivefault(s).

2.Whileindiagnosticmode(shuntconnectorstogether),setthekeyswitch
totheRUNposition.

3.Disconnectthediagnosticshuntconnectors,thenreconnectthem.The
diagnosticlightwillashcontinuouslyoncepersecondifalltheactivefaults
havebeencleared.

4.SetthekeyswitchtotheOFFposition.

ExitingDiagnosticMode

1.SetthekeyswitchtotheOFFposition.

2.Disconnectthediagnosticshuntconnectorsandinstallthetetheredcap.

3.Storethediagnosticconnectorassemblyinthecontroltower.

ProForce®DebrisBlower
18237SLRevA

Page3–5

Troubleshooting:GeneralOperationProblems

StartingProblems

Problem

Thestartersolenoidclicks,butthe
starterdoesnotcrank

Nothinghappenswhenyouattemptto
starttheengineusingthekeyswitch

PossibleCauseCorrectiveAction

Thebatterychargeislow

Thebatteryisdischargedordamaged

Thebatterycablesarelooseor
corroded

Thegroundconnectionislooseor
corroded

Thewiringatthestartermotoris
damaged

Thestartersolenoidorstartermotoris
damaged

Thebatteryisdischargedordamaged

Thebatterycablesarelooseor
corroded

Thegroundconnectionislooseor
corroded

AfuseisdamagedTestthefuseandreplaceitifnecessary

ArelayisdamagedTestthestartrelayandmainpower

Thekeyswitchisdamaged

Thewiringtothestartcircuit
componentsiscorroded,loose,or
damaged

Thewiringatthestartermotoris
damaged

Thestartersolenoidorstartermotoris
damaged

Chargethebattery

Chargeandtestthebattery
Replacethebatteryifnecessary
Cleanandsecurethebatterycables

Cleanandsecuretheground
connectionsattheengineblock

Repairorreplacestarterwiring

RefertotheKohlerCommandPro
CH740ServiceManualforstarter
solenoidandstartermotorinformation.

Chargeandtestthebattery

Replacethebatteryifnecessary
Cleanandsecurethebatterycables

Cleanandsecuretheground
connectionsattheengineblock

F–1(7.5A),F–2(7.5A),F–3(15A),
and/orF–4(2A)ifnecessary;referto
FusesinChapter5–ElectricalSystem

relayandreplacethemifnecessary;
refertoComponentT estinginChapter
5–ElectricalSystem

Testthekeyswitchandreplaceitif
necessary;refertoComponentT esting
inChapter5–ElectricalSystem

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Testthecircuitwiringandreplaceitas
necessary

RefertotheKohlerCommandPro
CH740ServiceManualforstarter
solenoidandstartermotorinformation.

Models44552,44552TE,and44553
–Nothinghappenswhenyouattempt
tostarttheengineusingthewireless
remote

Troubleshooting:StartingProblems

Thebatteriesinthewirelessremoteare
dischargedorinstalledimproperly

Theassociationbetweenthewireless
remoteandthecontrolmodulehas
beenlost

Thewirelessremoteorcontrolmodule
isdamaged

Page3–6

Attempttostarttheenginewiththe
keyswitch.Iftheenginestarts,
troubleshootthewirelessremoteas
follows:

Testthebatteriesandreplacethemif
necessary

Makesurethebatteriesareproperly
installed;refertoWirelessRemotein
Chapter5–ElectricalSystem

Re-establishremotecontrol-to-base
unitcommunication;refertothe
machineOperator’sManual

Replacethewirelessremote

ProForce®DebrisBlower

18237SLRevA

StartingProblems(continued)

Problem

Theenginecranks,butdoesnotstart

PossibleCauseCorrectiveAction

ThefueltankisemptyFillthefueltank

Theengineand/orfuelistoocold

ThefuellterispluggedReplacethefuellter
ThefuelpumpisdamagedTestthepulsefuelpumpand

FuseF–2(7.5A)isdamagedTestthefuseandreplaceitifnecessary;

TheGovernorControlUnit(GCU)has
lostpower

Thefuel/carburetorsolenoidorits
circuitwiringisdamaged

TheengineismalfunctioningTroubleshoottheengine;refertothe

Usethechoketostarttheengine
Movethemachinetoaheated

environmentpriortostarting

repair/replaceitifnecessary;refer
totheKohlerCommandProCH740
ServiceManualforpulsefuelpump
information

refertoFusesinChapter5–Electrical
System

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Testthecarburetorsolenoidand
replaceitifnecessary;refertothe
KohlerCommandProCH740Service
Manualforfuelshut-offsolenoid
information

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

KohlerCommandProCH740Service
Manual

ProForce®DebrisBlower
18237SLRevA

Page3–7

Troubleshooting:StartingProblems

GeneralOperationProblems

Problem

Thebatterydoesnotcharge

Theengineshutsoffduringoperation

PossibleCauseCorrectiveAction

Thebatterycablesarelooseor
corroded

Thegroundconnectionislooseor
corroded

Thebatteryisdischargedordamaged

Thein-linechargingcircuitfuseF-5(30
A)isdamaged

Thevoltageregulator/rectieris
damaged

Thechargingcircuitwiringiscorroded,
loose,ordamaged

Models44552,44552TE,and44553
–Thecontrollerhasswitchedto
PowerSaveModeafter2.5hoursof
nocommunicationfromthewireless
remote

Theengineoilpressureislow

TheoilpressureswitchhasfailedTesttheoilpressureswitch;refer

ThefueltankisemptyFillthefueltank
ThefuellterispluggedReplacethefuellter
ThefuelpumphasfailedT estthepulsefuelpumpand

Thefuel/carburetorsolenoidorits
circuitwiringhasfailed

Acomponentintheengineruncircuit
(fuses,keyswitch,mainpowerrelay)
hasfailed

Theengineruncircuitwiringis
corroded,loose,ordamaged

TheengineismalfunctioningTroubleshoottheengine;refertothe

Cleanandsecurethebatterycables

Cleanandsecuretheground
connectionsattheengineblock

Chargeandtestthebattery
Replacethebatteryifnecessary
Testthefuseandreplaceitifnecessary;

refertoFusesinChapter5–Electrical
System

Testthevoltageregulator/rectier
andreplaceitifnecessary;referto
theKohlerCommandProCH740
ServiceManualforregulator/rectier
information

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

CyclethekeyswitchtotheOFF
positionandthenturnthekeyswitch
totheRUNposition

Checkandadjusttheengineoillevelif
necessary

totheKohlerCommandProCH740
ServiceManualforoilpressureswitch
information

Clean,secureorrepair/replacethe
switchcircuitwiring;Refertothe
ElectricalSchematicsinAppendixA

repair/replaceitifnecessary;refer
totheKohlerCommandProCH740
ServiceManualforpulsefuelpump
information

Testthecarburetorsolenoidand
replaceitifnecessary;refertothe
KohlerCommandProCH740Service
Manualforfuelshut-offsolenoid
information

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Testtheengineruncircuitcomponents
andreplaceitifnecessary;referto
FusesinChapter5–ElectricalSystem

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

KohlerCommandProCH740Service
Manual

Troubleshooting:GeneralOperationProblems

Page3–8

ProForce®DebrisBlower

18237SLRevA

GeneralOperationProblems(continued)

Thenozzledoesnotrotate

Problem

ThedrivebeltislooseordamagedAdjustthedrivebeltorreplaceit

AnozzlerelayisdamagedT estnozzlerelay1andnozzlerelay2

ThenozzlerotationmotorisdamagedTestthenozzlerotationmotorand

Thenozzlerotationcircuitwiringis
corroded,loose,ordamaged

Models44552,44552TE,and44553–
Thewirelessremoteisnotfunctioning,
(enginespeedcontrolisnotfunctioning
also)

Model44554–FuseF–1(7.5A)is
damaged

Model44554–Thenozzledirection
switchorcircuitwiringisdamaged

PossibleCauseCorrectiveAction

asnecessary;refertothemachine

Operator’sManual

andreplacethemifnecessary;refer
toComponentTestinginChapter5–
ElectricalSystem

replaceitifnecessary;referto
ComponentT estinginChapter5–
ElectricalSystem

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Testthewirelessremotebatteriesand
replacethemifnecessary

Makesurethebatteriesareproperly
installed;refertoWirelessRemotein
Chapter5–ElectricalSystem

Re-establish“associate”remote
control-to-baseunitcommunication;
refertothemachineOperator’sManual

Replacethewirelessremoteasitmay
bedamaged

Testthefuseandreplaceitifnecessary;
refertoFusesinChapter5–Electrical
System

Testthenozzledirectionswitch
andreplaceitifnecessary;referto
ComponentT estinginChapter5–
ElectricalSystem

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

ProForce®DebrisBlower
18237SLRevA

Page3–9

Troubleshooting:GeneralOperationProblems

GeneralOperationProblems(continued)

Problem

Theenginespeeddoesnotchange

PossibleCauseCorrectiveAction

Models44552,44552TE,and
44553–Thewirelessremoteisnot
functioning,(nozzlerotationcontrolis
notfunctioningalso)

Model44554–FuseF–1(7.5A)is
damaged

Model44554–Theenginespeed
controlorcircuitwiringisdamaged

Theenginespeedcontrolcircuitwiring
iscorroded,loose,ordamaged

TheDigitalLinealActuator(DLA)orits
circuitwiringisdamaged

TheGovernorControlUnit(GCU)orits
circuitwiringisdamaged

Testthewirelessremotebatteriesand
replacethemifnecessary

Makesurethebatteriesareproperly
installed;refertoWirelessRemotein
Chapter5–ElectricalSystem

Re-establish“associate”remote
control-to-baseunitcommunication;
refertothemachineOperator’sManual

Replacethewirelessremoteasitmay
bedamaged

Testthefuseandreplaceitifnecessary;
refertoFusesinChapter5–Electrical
System

Testtheenginespeedcontroland
replaceitifnecessary;referto
ComponentT estinginChapter5–
ElectricalSystem

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

TesttheDLAandreplaceitif
necessary;refertotheKohler
CommandProCH740ServiceManual
forDLAinformation

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

TesttheGCUandreplaceitif
necessary;refertotheKohler
CommandProCH740ServiceManual
forGCUinformation

Clean,secureorrepair/replacethe
circuitwiring;RefertotheElectrical
SchematicsinAppendixA

Models44552,44552TE,and44553–
Thewirelessremotedoesnotfunction

Troubleshooting:GeneralOperationProblems

Thebatteriesinthewirelessremoteare
dischargedorinstalledimproperly

Theassociationbetweenthewireless
remoteandthecontrolmodulehas
beenlost

Thewirelessremoteorcontrolmodule
isdamaged

Page3–10

Testthebatteriesandreplacethemif
necessary

Makesurethebatteriesareproperly
installed;refertoWirelessRemotein
Chapter5–ElectricalSystem

Re-establishremotecontrol-to-base
unitcommunication;refertothe
machineOperator’sManual

Replacethewirelessremote

ProForce®DebrisBlower

18237SLRevA

Chapter4

Engine

TableofContents

GeneralInformation..............................................................................................................................4–2

Operator’sManual.............................................................................................................................4–2

EngineOwner’sManual.....................................................................................................................4–2

EngineServiceManual......................................................................................................................4–2

KohlerGasolineEngine.....................................................................................................................4–3

Adjustments..........................................................................................................................................4–4

AligningtheEngineandBlowerDriveShafts.....................................................................................4–4

AdjustingtheEngineIdleSpeed........................................................................................................4–5

ServiceandRepairs.............................................................................................................................4–6

FuelT ank...........................................................................................................................................4–6

FuelEvaporativeControlSystem.......................................................................................................4–9

Engine..............................................................................................................................................4–11

Additional Reference Materials

KOHLER Command Pro CH740 Service Manual

ProForce®DebrisBlowerPage4–1Engine
18237SLRevA

GeneralInformation

Operator’sManual

EngineOwner’sManual

ThischaptergivestheinformationaboutspecicationsandrepairoftheKohler
CommandProCH740gasolineengineusedintheProForcedebrisblower.
Describedadjustmentsandrepairsrequiretoolsthatarecommonlyavailablein
manyserviceshops.

ServiceandrepairpartsfortheengineinyourProForcedebrisblowerare
suppliedthroughyourAuthorizedT oroDistributor.Bepreparedtoprovideyour
distributorwiththeT oroModelandSerialNumberofyourmachinetoobtainparts.

Whendisposingofhazardouswasteproducts(fuel,engineoil,hydraulicuid,
lters,etc.),takethemtoanauthorizeddisposalsite.Wasteproductsmustnot
beallowedtocontaminatesurfacewater,drains,orsewersystems.

TheOperator’sManualprovidesinformationregardingtheoperation,general
maintenance,andmaintenanceintervalsforyourProForceDebrisBlower.Refer
toOperator’sManualforadditionalinformationwhenservicingthemachine.

TheengineOwner’sManualprovidesinformationregardingtheoperation,
generalmaintenance,andmaintenanceintervalsfortheKOHLERCommand
ProCH740engineusedonyourProForcedebrisblower.Acopyoftheengine
Owner’sManualissuppliedwiththemachine.ContactyourlocalKOHLER
EngineDealerorvisithttp://kohlerengines.comtoobtainacopyoftheengine
Owner’sManual.RefertotheengineOwner’sManualforadditionalinformation
whenservicingthemachine.

EngineServiceManual

Detailed information on engine troubleshooting, testing, disassembly, and
assembly is given in the KOHLER Command Pro CH740 Service Manual. The
use of some specialized tools and test equipment is explained in the KOHLER
Service Manual. Contact your local KOHLER Engine Dealer or visit http://
kohlerengines.com to obtain a copy of the engine Service Manual. Special tools
are described in the KOHLER Service Manuals and the use of some
specialized test equipment is explained. The cost of the test equipment and the
specialized nature of some repairs may dictate that engine work be done at an
engine repair facility.

Engine:GeneralInformationPage4–2ProForce®DebrisBlower

18237SLRevA

KohlerGasolineEngine

g278566

Figure7

1.Pulsestylefuelpump4.Fuelshut-offsolenoid

2.Governorcontrolunit(GCU)5.Oilpressureswitch

3.Voltageregulator/rectier6.Digitallinearactuator(DLA)

Theengineincludesanelectronicspeedcontrolsystem.Inadditiontothe
necessarylinkages,thespeedcontrolsystemincludesaGovernorControlUnit
(GCU)andaDigitalLinearActuator(DLA).Electricalpowermustbeavailable
totheGCUfortheenginetostartandrun.Enginespeedisadjustedbyusing
eitherthewirelessortetheredremote.RefertotheKOHLERCommandPro
CH740ServiceManualforadditionalinformation.

Theengineincludesanoilpressureswitch.Whenoilpressureisbeinggenerated
(engineisrunning)theswitchisclosed.Ontetheredremotemachines,the
closedswitchprovidesapathtogroundforthehourmetercircuit.Onwireless
remotemachines,theclosedswitchprovidesapathtogroundforthehourmeter
circuitandisaninputfortheT oroElectronicController(TEC).TheTECbegins
tomonitortheconditionoftheoilpressureswitch3minutesaftertheengineis
started.Whentheoilpressuredropstoolow(switchcircuitopens),theengineis
allowedtorunforapproximately10secondsandisthenshutdown.

Theengineincludesapulsestylefuelpumpandafuelshut-offsolenoid.
Oscillatingcrankcasepressurecausesadiaphragminsidethepulsestylefuel
pumptopullfuelinonthepistondown-strokeandtopushitintocarburetor
onthepistonup-stroke.Twocheckvalvespreventfuelfromgoingbackward
throughpump.Thefuelshut-offsolenoidhasaspringloadedpinthatretracts
when12voltsisapplied,allowingfuelowtothecarburetormainjet.When
currentisremoved,thepinextendsblockingthefuelow.

ProForce®DebrisBlower
18237SLRevA

Page4–3

Engine:GeneralInformation

Adjustments

AligningtheEngineandBlowerDriveShafts

g280938

Figure8

1.Engine

2.Blowerassembly

3.Shaftalignmenttool

4.Collar(2each)

Aligntheengineoutputshaftwiththeblowershaftiftheengine,blowerdrive
shaft,orblowerassemblyisremoved.

1.Thefastenerssecuringtheenginetothechassisshouldbeinstallednger
tight.

2.Ensureawoodruffkeyisinstalledintheengineshaftandtheblowershaft.

3.FitonecollaroftheShaftAlignmentTool(T oropartnumber137–6616)over
theblowershaftandkey;refertoShaftAlignmentTool(page2–13).

4.Movetheengineinitsmountingslotsifnecessaryandttheothercollarof
thetoolovertheengineshaftandkey.

5.Movetheengineinitsmountingslotsifnecessaryandsettheshafttoshaft
distancebyextendingthetoolfully .Twistbothcollarstolockthetoolinthe
extendedposition.

6.Movetheengineinitsmountingslotsifnecessaryuntileachendofthetool
tssquarelyonthetaperedshaftsandkeys.

7.Tightentheenginemountingfastenersto37to44N·m(27to33ft-lb).

8.Retractbothalignmenttoolcollarsandremovethealignmenttool.

Engine:AdjustmentsPage4–4

ProForce®DebrisBlower

18237SLRevA

AdjustingtheEngineIdleSpeed

Refer to the Kohler Command CH740 Service Manual for additional information.

ProForce®DebrisBlowerPage4–5Engine:Adjustments
18237SLRevA

ServiceandRepairs

FuelTank

g275247

Figure9

1.Fueltank

2.Fueltankcap

3.Tankstrap(2each)8.Standpipe13.Fuelline–ltertocarburetor

4.Seal9.Hoseclamp(4each)14.Flangenut(4each)

5.Fuelgauge10.Bushing

Engine:ServiceandRepairs

6.Vent/rollovervalve11.Fuelline–tanktolter

7.Grommet12.Fuellter

Page4–6

ProForce®DebrisBlower

18237SLRevA

CheckingtheFuelLinesandConnections

DANGER

Gasolinefuelishighlyammableandexplosive.Areoran
explosionfromthefuelcanburnyou,burnotherpeople,anddamage
property.

•Usecautionwheneveryoustoreorhandlegasolinefuel.

•Donotsmokewhilellingthefueltank.

•Donotllthefueltankwhiletheengineisrunning,whilethe
engineishot,orwhenthemachineisinanenclosedarea.

•Alwaysllthefueltankoutsideandwipeupanyspilledgasoline
fuelbeforestartingtheengine.

•Storefuelinaclean,safety-approvedcontainerandkeepthecap
inplace.

•Usegasolinefuelasanenginefuelonly ,notforanyother
purpose.

Checkthefuellinesandconnectionsatthescheduledmaintenanceintervals
recommendedintheOperator’sManual.Checkthelinesfordeterioration,
damage,leaks,orlooseconnections.Replacethehoses,clamps,andttings
asnecessary.

DrainingandCleaningtheFuelTank

Drainandcleanthefueltankatthemaintenanceintervalsasrecommended
intheOperator’sManual.Ifthefuelsystembecomescontaminatedorifthe
machineisstoredforanextendedperiod,drainandcleanthefueltank.

Followalllocalcodesandregulationswhenrecyclingordisposing
wastefuel.

Todrainthefueltank,suckorsiphonthefuelfromthetank,orremovethetank
fromthemachineandpourthecontentsintoasuitablecontainer.

Tocleanthefueltank,ushthetankoutwithcleangasolinefuel.Ensurethat
thefueltankisfreeofallcontaminationanddebris.

RemovingtheFuelTank

RefertoFigure9forthisprocedure.

1.Parkthemachineonalevelsurface,shutofftheengine,andremovethekey
fromthekeyswitch.

2.Recordthefuelhoseroutingforinstallationpurposes.Disconnectthefuel
hosesfromthefueltankttings,thencoverorplugthehosesandttingsto
preventcontaminationfromenteringthefuelsystem.

3.Removetheangenutsandholddownstrapsfromthemachineandremove
thefueltank.

4.Disassemblythefueltankasnecessary .

IMPORTANT

InstallingtheFuelTank

ProForce®DebrisBlower
18237SLRevA

RefertoFigure9forthisprocedure.

Page4–7

Engine:ServiceandRepairs

InstallingtheFuelT ank(continued)

1.Installanypreviouslyremovedcomponentsonthefueltank.

2.Positionthefueltankonthemachine(fuelcapoutward)andinstallthehold
downstrapsandangenuts.

3.Removethecoversandplugsfromthehosesandttings,thensecurethe
fuelhosestothetankttingswiththehoseclamps.

4.Ifthefuellter(item12)wasremoved,ensurethatthearrowonthelter
bodypointstowardtheengine.

5.Fillthefueltankwithcleanfuelandstarttheengine.Checkthefuelhoses
andttingsforleaksandrepairanyfuelleaksbeforereturningthemachine
toservice.

Engine:ServiceandRepairs

Page4–8

ProForce®DebrisBlower

18237SLRevA

FuelEvaporativeControlSystem

g275201

Figure10

1.Fueltank

2.Grommet7.Hose(3each)12.Hoseclamp(4each)

3.Vent/rollovervalve8.Freshairlter13.Fuellter

4.Hoseclamp(8each)9.Hose–freshair

5.Hose–tanktocarboncanister

6.Carboncanister11.Barbtting(2each)

14.Purgevalve

10.Hose–canistertolter15.Hose–purgevalvetomanifold

ProForcedebrisblowersareequippedwithafuelevaporativecontrolsystem
designedtocollectandstoreevaporativeemissionsfromthefueltank.The
evaporatecontrolsystemusesacarboncanisterandaseriesofventhosesto
collecttheseevaporativeemissions.Thefueltankusesanon-ventedfuelcap.A
fueltankvent/rollovervalveispositionedinthetopofthetankthatallowstank
ventingthroughthecarboncanister.Fuelvaporsfromthefueltankareventedto
thecanisterandconsumedbytheenginewhentheengineisrunning.

Note:Ifthereisrestrictioninthecarboncanister,thefueltankventttingorthe
venthose,thefueltankmaydistortduetoventingissues.Ifthefueltankreturns
toit’snormalshapewhenthefuelcapisremoved,restrictionintheevaporative
controlsystemislikely .

Thecarboncanisterismountedonthecontroltower/batterybox.The
evaporativesystemconnectiontotheenginepassesthroughalteranda
vacuumcheck/purgevalvebeforeconnectiontotheengineintakemanifold.The
evaporativecontrolsystemventconnectionpassesthroughafreshairlter
beforeitreachesthecarboncanister.

DisassemblingtheFuelEvaporativeControlSystem

RefertoFigure10forthisprocedure.

ProForce®DebrisBlower
18237SLRevA

Page4–9

Engine:ServiceandRepairs

DisassemblingtheFuelEvaporativeControlSystem(continued)

Gasolinefuelishighlyammableandexplosive.Areoran
explosionfromthefuelcanburnyou,burnotherpeople,anddamage
property.

•Usecautionwheneveryoustoreorhandlegasolinefuel.

•Donotsmokewhilehandlinggasoline.

•Wipeupanyspilledfuelbeforestartingtheengine.

1.Inspectthecarboncanisterandattachedhosesfordamageorobviousleaks.
Adamagedorleakingcanistershouldbereplaced.

2.Removetheevaporativecontrolsystemcomponentsasnecessary .Record
hoseroutingforassemblypurposes.

AssemblingtheFuelEvaporativeControlSystem

RefertoFigure10forthisprocedure.

DANGER

1.Ifthepurgevalve(item14)wasremoved,ensurethatthearrowonthevalve
bodypointstowardtheengine.

2.Ifthefuellter(item3)wasremoved,ensurethatthearrowonthelter
bodypointstowardtheengine.

3.Ensurethattheevaporativesystemhosesarenotkinkedafterinstallation.
Securethehosesasrecordedduringdisassembly.

Engine:ServiceandRepairs

Page4–10

ProForce®DebrisBlower

18237SLRevA

Engine

g277842

Figure1 1

1.Engine

2.Flangenut(4each)10.Engineshafthub

3.Topgrill11.Washer

4.Flangenut(4each)12.Capscrew20.Mufer

5.Rubbercouplingspacer(4each)13.Flange-headscrew(4each)21.Gasket(2each)

6.Washer(4each)14.Flangenut(4each)22.Flangenut(4each)

7.Capscrew(4each)15.Flange-headscrew(4each)

8.Driveshaftassembly16.Capscrew(2each)

9.Woodruffkey17.Hardenedwasher(2each)

18.Mufermount

19.Flange-headscrew(2each)

RemovingtheEngine

RefertoFigure11forthisprocedure.

ProForce®DebrisBlower
18237SLRevA

Page4–11

Engine:ServiceandRepairs

RemovingtheEngine(continued)

1.Parkthemachineonalevelsurface,shutofftheengine,andremovethekey
fromthekeyswitch.Blockthewheelswithchockstopreventthemachine
frommoving.

2.Removethetopgrill.

3.Disconnectthenegativebatterycablefromthebatteryterminal;referto

ServicingtheBattery(page5–37).

CAUTION

Ahotengineandexhaustsystemcancauseburns.

Allowtheengineandtheexhaustsystemtocoolbeforeremoving
theengine.

4.Disconnectthefuelsupplyhoseatthefuelpump.Coverorplugthe
disconnectedhoseandthefuelpumpinlettopreventfuelsystem
contamination.

Engine:ServiceandRepairs

Page4–12

ProForce®DebrisBlower

18237SLRevA

RemovingtheEngine(continued)

g277747

Figure12

1.Fuelsupplyhose5.Multi-pinwireharnessconnector9.Wireharnessground

2.Fuelpump6.Flange-headscrew10.Engineground

3.Fuelevaporativecontrolhose7.Lockwasher

4.Positivebatterycable8.Negativebatterycable

5.Disconnectthefuelevaporativecontrolhoseattheintakemanifold.Cover
orplugthedisconnectedhoseandtheintakemanifoldinlettopreventfuel
evaporativecontrolsystemcontamination.

6.Cleanupanyspilledfuelandpositionthedisconnectedhosesawayfrom
theengine.

7.Disconnectthepositivebatterycablefromthestartermotorstud.

8.Disconnectthemulti-pinwireharnessconnectorfromtheengine.

9.Removethescrewandlockwasherthatsecurethenegativebatterycable,
wireharnessground,andenginegroundconnectortotheengine..

10.Removethebolts,washers,andangenutsthatsecurethedriveshaft
assemblytothehubsontheengineshaftandblowershaft.

11.Liftthedriveshaftassemblyfromthemachineandretrievetherubber
couplingspacers.

12.Removethe4ange-headscrewsand4angenutsthatsecuretheengine
tothechassis.

ProForce®DebrisBlower
18237SLRevA

Page4–13

Engine:ServiceandRepairs

RemovingtheEngine(continued)

InstallingtheEngine

CAUTION

Useanappropriateliftandtheliftinglugsprovidedtopreventthe
enginefromfallingandcausingpersonalinjuryorproductdamage.
Theweightoftheengineisapproximately53kg(116lb).

13.Carefullyremovetheenginefromthemachine.

14.Removethemufer,mufermount,andengineshafthubifnecessary.

RefertoFigure11forthisprocedure.

1.Ensurethatallpartsthatwereremovedfromtheengineareproperlyinstalled.

2.Ifthemuferwasremoved:

A.Removeanyremaininggasketmaterialandinstallnewexhaustgaskets.

B.Tightenthenutsthatsecurethemufertotheengineto24N·m(18

ft-lbs).

3.Iftheengineshafthubwasremoved:

A.Cleanthetapersoftheshaftandhub.

B.Installawoodruffkeyintheengineshaft.

C.Applymediumstrengththreadlockingcompoundandinstallthehub,

washer,andhubretainingbolt.

D.Tightenthehubretainingboltfrom37to45N·m(27to33ft-lb).

4.Installthemufermountifpreviouslyremoved.

CAUTION

Useanappropriateliftandtheliftinglugsprovidedtopreventthe
enginefromfallingandcausingpersonalinjuryorproductdamage.
Theweightoftheengineisapproximately53kg(116lb).

IMPORTANT

Wheninstallingtheengineensurethatyoudonotdamagethe
engine,fuelhoses,electricalharness,orotherparts.

Engine:ServiceandRepairs

5.Carefullypositiontheengineonthechassis.

6.Installthe4ange-headscrewsandangenutsthatsecuretheengineto
thechassisngertight.

7.UsetheShaftAlignmentT ooltoaligntheengineoutputshafttotheblower
shaft;refertoAligningtheEngineandBlowerDriveShafts(page4–4).

8.Fittherubbercouplingspacersintothecouplingsandpositionthedriveshaft
assemblybetweentheengineshaftandblowershafthubs.

Page4–14

ProForce®DebrisBlower

18237SLRevA

InstallingtheEngine(continued)

9.Securethedriveshafttothehubswiththebolts,washers,andangenuts.

Tightenthedriveshaftmountingfastenersto34to37N·m(25to27.5ft-lb).

10.Securetheenginegroundconnector,wireharnessground,andnegative
batterycabletotheenginewiththescrewandlockwasher(Figure12).Coat
theringterminalswithBatteryT erminalProtector;refertoSpecialT ools

(page2–12).

11.Connectthemulti-pinwireharnessconnectortotheengine.

12.Connectthepositivebatterycabletothestartermotorstud.

13.Removeanycapsorplugsandconnectthefuelevaporativecontrolhoseto
theintakemanifoldwithahoseclamp.

14.Removeanycapsorplugsandconnectthefuelsupplyhosetothefuelpump
withahoseclamp.

15.Installthe2fastenerssecuringthemufertothemufermount.

16.Installthetopgrill.

17.Connectthenegativebatterycabletothenegativebatteryterminal.Tighten
thenutthatsecuresthebatterycableto14to20N∙m(10to15ft-lb).Install
thebatterycover.

18.Checktheengineoillevelandadjustasnecessary.

19.Startandoperatetheenginecontrolsbeforereturningthemachinetoservice.

ProForce®DebrisBlower
18237SLRevA

Page4–15

Engine:ServiceandRepairs

Engine:ServiceandRepairs

Page4–16

ProForce®DebrisBlower

18237SLRevA

Chapter5

ElectricalSystem

TableofContents

GeneralInformation..............................................................................................................................5–2

Operator’sManual.............................................................................................................................5–2

KohlerEngineElectricalComponents................................................................................................5–2

ToroElectronicController(TEC)........................................................................................................5–2

ToroWirelessModules(TWMs).........................................................................................................5–3

CAN-busCommunications.................................................................................................................5–4

ElectricalSchematicsandWireHarnessDrawings/Diagrams............................................................5–5

ElectricalSystemQuickChecks............................................................................................................5–6

TestingtheBattery(OpenCircuitTest)...............................................................................................5–6

TestingtheChargingSystem.............................................................................................................5–6

TestingtheElectricalComponents........................................................................................................5–8

Fuses.................................................................................................................................................5–9

Canbus............................................................................................................................................5–11

ToroElectronicController(TEC)(Models44552,44552TE,and44553)..........................................5–12

ToroWirelessModule(TWM)RF2CAN(Models44552,44552TE,and44553)................................5–15

ToroWirelessModule(TWM)HandheldRemote(Models44552,44552TE,and

44553)..............................................................................................................................................5–16

KeySwitch(forModels44552,44552TE,and44553)......................................................................5–17

KeySwitch(forModel44554)..........................................................................................................5–19

HourMeter.......................................................................................................................................5–20

NozzleDirectionSwitch(forModel44554).......................................................................................5–21

EngineSpeedControl(forModel44554).........................................................................................5–22

Relays..............................................................................................................................................5–24

CANbusT erminatorResistors.........................................................................................................5–27

DiagnosticLamp(forModels44552,44552TE,and44553).............................................................5–29

NozzleMotor....................................................................................................................................5–30

ServiceandRepairs...........................................................................................................................5–31

NozzleMotor....................................................................................................................................5–32

CaringfortheBattery.......................................................................................................................5–35

StoringtheBattery...........................................................................................................................5–36

ServicingtheBattery........................................................................................................................5–37

ProForce®DebrisBlower
18237SLRevA

Page5–1

ElectricalSystem

GeneralInformation

Operator’sManual

KohlerEngineElectricalComponents

IMPORTANT

Beforeperforminganyweldingonthemachine,turnthekeyswitch
totheOFFposition.Topreventdamagetothemachineelectrical
system,disconnecttheground(-)cablefromtheenginewhen
weldingonthechassis.

TheOperator’sManualprovidesinformationregardingtheoperation,general
maintenance,andmaintenanceintervalsforyourProForceDebrisBlower.Refer
totheOperator’sManualforadditionalinformationwhenservicingthemachine.

Whenservicingortroubleshootingtheengineelectricalcomponents,usethe
correctengineservicemanualandtroubleshootingmanual.TheKohlerengine
serviceandmanualisavailableonline,andontheT oroServiceReferenceash
drive.

ToroElectronicController(TEC)

WirelesscontrolledProForceDebrisBlowers(Models44552,44552TE,and

44553)useaT oroElectronicController(TEC)tomanagemachineelectrical
functions.TheTECisa2403seriesmicrocontrollerthatmonitorsthecondition
ofvariousmachineswitches(inputs)anddirectselectricalpowertocontrol
appropriatemachinefunctions(outputs)basedonthestateoftheinputs.The
TECworksinconjunctionwiththeT oroWirelessModules(TWMs)tomanage
powertotheenginestartrelayandthenozzlecontrolrelays.TheTECalso
managespowertothefollowingKohlerenginecomponents:governorcontrol
unit,thefuelshut-offsolenoid,andtheignitionmodules.

TheTECisattachedtothemachinecontroltower.PowerfortheTEClogicand
memoryisavailableatalltimes(unswitched).Thelogicandmemorycircuitis
protectedbya2Ampfuse(F−4).PowerfortheTECoutputsisavailablewhen
themainpowerrelayisenergized(keyswitchisintheONorST ARTposition).A
pairof7.5Ampfuses(F−1andF–2)protecttheTECoutputcircuits.

TheToroElectronicController(TEC)andtheToroWirelessModules(TWMs)
communicatewitheachotheronaControllerAreaNetwork(CAN)bussystem.

Note:TheToroElectronicController(TEC)andtheT oroWirelessModules
(TWMs)usedontheProForceDebrisBlowerarematchedforcorrectmachine
operation.Ifanyofthesecomponentsarereplacedforanyreason,system
softwareneedstobereloaded(contactanAuthorizedToroDistributorfor
assistance).

ElectricalSystem:GeneralInformation

Page5–2

ProForce®DebrisBlower

18237SLRevA

ToroWirelessModules(TWMs)

WirelesscontrolledProForceDebrisBlowers(Models44552,44552TE,and

44553)useToroWirelessModules(TWMs)toallowtheoperatortocontrolthe

blowerfromthetowvehiclewithouttheneedforatetheredcontrolbox.There
aretwoTWMsusedonthemachine.Therstisa240005seriesRF2CAN
(radiofrequencytoCAN)controller,andthesecondisa240006serieswireless
handheldremotecontrol.

TheRF2CANcontrollerisattachedtothemachinecontroltower.Powerforthe
RF2CANlogicandmemoryisavailableatalltimes(unswitched).Thelogic
andmemorycircuitisprotectedbya2Ampfuse(F−4).Thewirelesshandheld
remotecontrolispoweredby4sizeAAA1.5voltbatteries.

TheToroElectronicController(TEC)andtheToroWirelessModules(TWMs)
communicatewitheachotheronaControllerAreaNetwork(CAN)bussystem.

Note:TheToroElectronicController(TEC)andtheT oroWirelessModules
(TWMs)usedontheProForceDebrisBlowerarematchedforcorrectmachine
operation.Ifanyofthesecomponentsarereplacedforanyreason,system
softwareneedstobereloaded(contactanAuthorizedToroDistributorfor
assistance).

ProForce®DebrisBlower
18237SLRevA

Page5–3

ElectricalSystem:GeneralInformation

CAN-busCommunications

TheToroElectronicController(TEC)andtheToroWirelessModules(TWMs)
usedonwirelesscontrolledProForceDebrisBlowers(Models44552,44552TE,
and44553)communicatewitheachotheronaControllerAreaNetwork(CAN)
bussystem.Usingthisnetworkintegratesallthedifferentelectricalcomponents
ofthemachineandbringsthemtogetherasone.TheCANbussystemreduces
thenumberofelectricalcomponentsandconnectionsusedonthemachineand
allowsthenumberofwiresinthewireharnesstobesignicantlyreduced.

EachofthecomponentsthatiscontrolledbytheCANbusnetworkonlyneeds
four(4)wirestooperateandcommunicatetothesystem:CANHigh,CANLow,
powerandground.ThekeyswitchneedstobeintheRUNorSTARTposition
forthecomponentsonthenetworktobeactivated.

Twospeciallydesigned,twistedwiresformtheCANbus.Thesewiresprovide
thedatapathwaysbetweenthecomponentsonthenetwork.Theengineering
termforthesecablesareCANHighandCANLow.TheCANbuswiresareeither
red/whiteoryellow(CAN-High)andblack/whiteorgreen(CANLow).Ateach
endofthetwistedpairofbuscablesisa120ohmterminationresistor;referto

CANbusT erminatorResistors(page5–27).

Thecanbusisincorporatedintothemachinewireharnessofallmodel44552,
44552TE,44553,and44554machines.Onlymachineswithwirelessremote
control(model44552,44552TE,and44553)havecomponentsthatusethe
CANbusforcommunication.

TheT oroDIAGelectroniccontroldiagnosticsservicesystemisavailableto
AuthorizedT oroDistributorstosupportmachinefaultdiagnosisandmaintenance
servicesofthemachineelectricalcontroldevices.TheToroDIAGconnectoris
locatedontheleftsideofthemachinecontroltower.

ElectricalSystem:GeneralInformation

g278232

1.Machinecontroltower

2.Connectorcover

Page5–4

Figure13

3.T oroDIAGconnector

ProForce®DebrisBlower

18237SLRevA

ElectricalSchematicsandWireHarnessDrawings/Diagrams

RefertotheElectricalSchematicsandWireHarnessDrawings/Diagramsin

AppendixA(pageA–1).

ProForce®DebrisBlower
18237SLRevA

Page5–5

ElectricalSystem:GeneralInformation

ElectricalSystemQuickChecks

TestingtheBattery(OpenCircuitTest)

Useamultimetertomeasurethevoltagebetweenthebatteryterminals;referto

BatteryT estT able(page5–6).

SetthemultimetertotheDCvoltssettings.Thebatterymustbeatatemperature
of16°Cto38°C(60°Fto100°F).EnsurethatthekeyisintheOFFpositionand
alltheaccessoriesareturnedoff.

Connectthepositive(+)multimeterleadtothepositivebatterypostandnegative
(-)multimeterleadtothenegativebatterypost.

Measureandrecordthebatteryvoltage.UsetheBatteryT estTable(page5–6)
todeterminechargelevelofthebattery.

Note:Thistestprovidesarelativeconditionofthebattery.Theloadtestingof
thebatteryprovidesadditionalandmoreaccurateinformation;refertoServicing

theBattery(page5–37).

BatteryTestT able

TestingtheChargingSystem

VoltageMeasured

12.68V(orhigher)Fullycharged(100%)

12.45V

12.24V

12.06V

11.89V

BatteryChargeLevel

75%charged

50%charged

25%charged

0%charged

Thisisasimpletestthatdeterminesifachargingsystemisfunctioning.Ittells
youifthechargingsystemhasanoutput,butnotitscapacity.

1.UseadigitalmultimetertosetDCvoltsandconnectthepositive(+)
multimeterleadtothepositivebatterypostandnegative(-)multimeterlead
tothenegativebatterypost.Recordthebatteryvoltage.

2.Keepthemultimeterleadsconnectedtothebatterypostsandstartthe
engine.Thebatteryvoltagewhiletheengineiscranking,thenmustincrease
oncetheengineisrunning.

Note:Dependingupontheconditionofthebatterychargeandbattery
temperature,thebatteryvoltageincreasesatdifferentratesasthebattery
charges.

3.Starttheengineandrunitathigh-idlespeed(3,550to3,650rpm).Allowthe

RefertotheBatteryVoltageTable(page5–7)foranexampleofaproperly
functioningchargingsystem.

ElectricalSystem:ElectricalSystemQuickChecks

batterytochargeforaminimumtimeof3minutesandrecordthebattery
voltage.Afterrunningtheengineforaminimumtimeof3minutes,thebattery
voltagemustbeminimum0.50Vhigherthanthatoftheinitialbatteryvoltage.

Page5–6

ProForce®DebrisBlower

18237SLRevA

TestingtheChargingSystem(continued)

BatteryVoltageT able

ChargingSystemPerformance:atleast0.50Vovertheinitialbatteryvoltage

Initialbatteryvoltage=12.30V

Batteryvoltageafter3minutescharge

Difference

=12.85V

=+0.55V

ProForce®DebrisBlower
18237SLRevA

Page5–7

ElectricalSystem:ElectricalSystemQuickChecks

TestingtheElectricalComponents

Foraccurateresistanceand/orcontinuitychecks,electricallydisconnectthe
componentbeingtestedfromthecircuit(e.g.,disconnectthekeyswitch
connectorbeforedoingacontinuitycheckoftheswitch).

IMPORTANT

Whentestingtheelectricalcomponentsforcontinuitywitha
multimeter(ohmssetting),ensurethatyoudisconnectthepowerto
thecircuit.

ElectricalSystem:TestingtheElectricalComponents

Page5–8

ProForce®DebrisBlower

18237SLRevA

Fuses

Theindividualcontrolcircuitsareprotectedbyavarietyoffuses(F-1–F-4)
foundinthefuseblocklocatedonthemachinecontroltowernexttotheengine
(Figure14).

g233941

Figure14

1.Engine3.Fuseblock

2.Fuseblockcover

Theenginewireharnessincludesa30Ain-linefuse(F-5)forchargingcircuit
protection.Theenginefuseislocatednearthestartermotor(Figure15).

g233945

Figure15

1.Enginefuse2.Startermotor

ProForce®DebrisBlower
18237SLRevA

Page5–9

ElectricalSystem:TestingtheElectricalComponents

IdenticationandFunction

g234233

Figure16

1.FuseF–1(7.5A)3.FuseF–3(15A)

2.FuseF–2(7.5A)4.FuseF–4(2A)

Models44552,44552TE,and44553

•FuseF–1(7.5A)protectsthepowersupplytoTECoutputs1–3

•FuseF–2(7.5A)protectsthepowersupplytoTECoutputs4–6

•FuseF–3(15A)protectstheunswitchedpowersupplytothekeyswitch,

mainpowerrelay,andstartrelay

TestingtheFuses

•FuseF–4(2A)protectstheunswitchedpowertotheTECandTWM

(RF2CANcontroller)

•FuseF-5(30A)protectsthebatterychargingcircuit

Model44554

•FuseF–1(7.5A)protectsthepowersupplytotheenginespeedcontroland

thenozzledirectionswitch

•FuseF–2(7.5A)protectsthepowersupplytotheKohlerenginegovernor

controlunit,thefuelshut-offsolenoid,andtheignitionmodules

•FuseF–3(15A)protectstheunswitchedpowersupplytothekeyswitch

(tethercontrolbox),mainpowerrelay,andstartrelay

•FuseF–4(2A)notrequiredforthismodel

•FuseF-5(30A)protectsthebatterychargingcircuit

1.MakesurethatkeyswitchisintheOFFpositionandthekeyisremoved
fromswitch.

2.Removethefusefromthefuseblock.

3.Useadigitalmultimeter(ohmssetting)andtestthefuseforcontinuityacross
thefuseterminals.

ElectricalSystem:TestingtheElectricalComponents

Page5–10

ProForce®DebrisBlower

18237SLRevA

Canbus

TestingtheCANbus

ThemachinecontrollerscommunicatewitheachotheronaControllerArea
Network(CAN)bussystem.Usingthisnetworkallowsfullintegrationofallthe
differentelectricalcomponentsofthemachine,allowingthemtooperatetogether
asone.Twospeciallydesigned,twistedwiresformtheCANbus.Thesewires
providethedatapathwaysbetweenthecomponentsonthenetwork.The
engineeringtermforthesecablesareCANHighandCANLow.TheCANbus
wiresareeitherred/whiteoryellow(CAN-High)andeitherblack/whiteorgreen
(CANLow).AteachendoftheCANbusisa120ohmterminationresistor;refer
toCANbusT erminatorResistors(page5–27).

Thecanbusisincorporatedintothemachinewireharnessofallmodel44552,
44552TE,44553,and44554machines.Onlymachineswithwirelessremote
control(model44552.44552TE,and44553)havecomponentsthatusethe
CANbusforcommunication.

ProForce®DebrisBlower
18237SLRevA

g278232

Figure17

1.Machinecontroltower

2.Connectorcover

3.T oroDIAGconnector

1.MakesurethatkeyswitchisOFFandkeyisremovedfromswitch.

2.TheToroDIAGconnectorispartoftheCANbusandislocatedontheleft
sideofthemachinecontroltower.

3.LocatetheT oroDIAGconnectorandremoveitfromtheconnectorcover.

4.Useamultimeter(ohmssetting)tomeasuretheresistanceacrossterminals
AandB.

•Areadingof54to66ohmsindicatestheCANbusisintact.

•Areadingof120ohmsindicatesoneoftheCANbusterminatorresistors

isnotconnected,damaged,ortheCANbuswiringisdamaged;referto

CANbusT erminatorResistors(page5–27)and/orAppendixA(pageA–1).

5.InstalltheT oroDIAGconnectoraftertesting.

Page5–11

ElectricalSystem:TestingtheElectricalComponents

ToroElectronicController(TEC)(Models44552,44552TE,and

44553)

g233944

Figure18

1.Engine

2.TEC(T oroElectronicController)

3.Greenconnector

4.Grayconnector

5.Controltower

WirelesscontrolledProForceDebrisBlowers(Models44552,44552TE,and

44553)useaT oroElectronicController(TEC)tomanagemachineelectrical
functions.TheTECisa2403seriesmicrocontrollerthatmonitorsthecondition
ofvariousmachineswitches(inputs)anddirectselectricalpowertocontrol
appropriatemachinefunctions(outputs)basedonthestateoftheinputs.The
TECworksinconjunctionwiththeT oroWirelessModules(TWMs)tomanage
powertotheenginestartrelayandthenozzlecontrolrelays.TheTECalso
managespowertothefollowingKohlerenginecomponents:governorcontrol
unit,thefuelshut-offsolenoid,andtheignitionmodules.

TheTECisattachedtothemachinecontroltower.PowerfortheTEClogicand
memoryisavailableatalltimes(unswitched).Thelogicandmemorycircuitis
protectedbya2Ampfuse(F−4).PowerfortheTECoutputsisavailablewhen
themainpowerrelayisenergized(keyswitchisintheONorST ARTposition).A
pairof7.5Ampfuses(F−1andF–2)protecttheTECoutputcircuits.

ElectricalSystem:TestingtheElectricalComponents

Page5–12

ProForce®DebrisBlower

18237SLRevA

ToroElectronicController(TEC)(Models44552,44552TE,and

44553)(continued)

TECDigitalInputs

INPUTNUMBER

DIN1HourMeterand

DIN2NotUsedDIN7NotUsed

DIN3NotUsedDIN8NotUsed

DIN4NotUsedKEYRUN

DIN5NotUsed

DESCRIPTION

EngineOilPressure

Switch

INPUTNUMBER

DIN6NotUsed

KEYSTARTKeySwitch(ST ART

TECOutputs

OUTPUTNUMBERDESCRIPTIONOUTPUTNUMBERDESCRIPTION

THROTTLE

CONTROL(PWM)

OUT1StartRelayOUT5

OUT2

OUT3

EngineGovernor

ControlUnit(GCU)

NozzleRelay1

NozzleRelay2

OUT4Engine:FuelShut

OUT6

OUT_LS(-)

ThemachineelectricalschematicandwireharnessdrawingsinElectrical

DrawingDesignations(pageA–2)canbeusedtoidentifypossiblecircuit

problemsbetweenthecontrollerandtheinputoroutputdevices(e.g.switches
andrelays).

DESCRIPTION

KeySwitch(RUN

position)

position)

OffandIgnitionCoils

NotUsed

DiagnosticLED

MainPowerRelay

IMPORTANT

Whentestingforwireharnesscontinuityattheconnectorfor
thecontroller,takecaretonotdamagetheconnectorpinswith
multimetertestleads.Ifconnectorpinsareenlargedordamaged
duringtesting,connectorrepairmaybenecessaryforproper
machineoperation.

ProForce®DebrisBlower
18237SLRevA

Page5–13

ElectricalSystem:TestingtheElectricalComponents

ToroElectronicController(TEC)(Models44552,44552TE,and

44553)(continued)

g234237

Figure19

1.WireharnessconnectorsP01(gray)and
P50(green)

2.T oroElectronicController(TEC)

Twocolorcoded12pinwireharnessconnectorsareattachedtothecontroller.
Theconnectionterminalfunctionforthecontrollerandthewireharness
connectorpinsareshownabove.

IMPORTANT

TheTECwireharnessconnectionsarecolorcoded.Makesurethe
grayharnessconnectorisinstalledinthegrayport,andthegreen
harnessconnectorisinstalledinthegreenport.

Becauseofthesolidstatecircuitrybuiltintothecontroller,thereisnomethodto
testitdirectly .Thecontrollermaybedamagedifanattemptismadetotestit
withanelectricaltestdevice(e.g.,digitalmultimeter).

Note:TheToroElectronicController(TEC)andtheT oroWirelessModules
(TWMs)usedontheProForceDebrisBlowerarematchedforcorrectmachine
operation.Ifanyofthesecomponentsarereplacedforanyreason,system
softwareneedstobereloaded(contactanAuthorizedToroDistributorfor
assistance).

ElectricalSystem:TestingtheElectricalComponents

Page5–14

ProForce®DebrisBlower

18237SLRevA

ToroWirelessModule(TWM)RF2CAN(Models44552,44552TE, and44553)

g278908

Figure20

1.Controltower

2.RF2CANmodule

3.Antenna

TheRF2CANmoduleisasolidstateelectricaldeviceusedtoconvertradio
frequencysignalstoandfromthewirelesshandheldremotetoCANsignalsto
andfromtheTEC.TheRF2CANmoduleisonlyactivewhenthekeyswitch
isintheRUNorST ARTposition.TheRF2CANmoduleismountedinsidethe
machinecontroltower.

Note:Machineoperationwillonlybecontrolledbyaremotetransmitterthat
isrecognizedby(associatedto)theRF2CANmodule;refertothemachine
Operator’sManualforadditionalinformation.

Becauseofthesolidstatecircuitrybuiltintothecontrolmodule,thereisno
reliablemethodtotestit.Themodulemaybedamagedifanattemptismadeto
testitwithanelectricaltestdevice(e.g.,digitalmultimeter).

IMPORTANT

Beforeperforminganyweldingonthemachine,disconnectthe
batterygroundcable,wireharnessground,andengineharness
groundatthebaseoftheengine.Thiswillpreventdamagetothe
electricalsystemofyourProForceDebrisBlower.

ProForce®DebrisBlower
18237SLRevA

Page5–15

ElectricalSystem:TestingtheElectricalComponents

ToroWirelessModule(TWM)HandheldRemote(Models44552, 44552TE,and44553)

g278931

Figure21

1.Remotetransmitter

2.LED

3.AAA(1.5V)alkalinebattery(4used)6.Steelbacker

4.Screws(6each)

5.Gasket

Thehandheldremoteisasolidstateelectricaldevicethatsendsandreceives
radiofrequency(RF)signalstoandfromtheRF2CANmodule.Thehandheld
remotetoRF2CANmodulerangeshouldbeapproximately4.6m(15ft).The
handheldremotecanonlybeassociatedtoonespecicRF2CANmodule.Refer
tothemachineOperator’sManualforthehandheldremotetoRF2CAN(base)
associationprocedure.

Theremotetransmitteractivates(powersup)whenyoupressanybutton.Then,
whenabuttonontheremotetransmitterispressed,theLEDontheremote
shouldilluminateindicatingtheremoteisattemptingtotransmitasignal.T o
conservebatterypower,theremotetransmittertimesoutandpowersdown,all
remotetransmitterLEDactivitystopsuntilanybuttonontheremoteispressed.

Theremotetransmitterispoweredby4AAA(1.5V)alkalinebatteries.Ifthe
rangeofthetransmitterhasdiminishedorthetransmitterLEDdoesnotilluminate
whenabuttonispressed,thebatteriesshouldbereplaced.

Thediagnosticlightshouldilluminatewhileabuttononthehandheldremoteis
pressed.Thisfeaturecanbeusedto:

ElectricalSystem:TestingtheElectricalComponents

•conrmtheassociationbetweenthehandheldremoteandtheRF2CAN

module

•checkthehandheldremoteoperatingrange

•checkthehandheldremotebatterycondition

•checkthehandheldremotebuttonoperation

Page5–16

ProForce®DebrisBlower

18237SLRevA

KeySwitch(forModels44552,44552TE,and44553)

TestingtheKeySwitch

g279128

Figure22

1.Controltower

POSITIONCLOSED

OFF

RUN1+3+4+5+6

START

CIRCUITS

1+6,4+5

1+2+4+5+6

2.Keyswitch

Thekeyswitchonthemachinecontroltowerhasthree(3)positions−OFF ,RUN
andSTART.ThekeyswitchisaninputusedbytheTECandRF2CANmodule
tomanagevariousmachinefunctions.ThekeyswitchispartoftheEnergize
toRun(ETR)circuit.

IftheETRcircuit(includingthekeyswitch)isfunctioningproperly ,thediagnostic
lightonthemachinecontroltowerwillilluminatewhenthekeyswitchissetto
theRUNposition.Iftestingdeterminesthattheswitchandcircuitwiringarenot
functioningcorrectly,proceedwiththefollowingtestprocedure:

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Disconnectthewireharnessconnectorfromtheswitchandremovethe
switchfromthecontroltowerifnecessary.

ProForce®DebrisBlower
18237SLRevA

Note:Keyswitchterminals1and6areconnectedinternally.T erminals4

and5arealsoconnectedinternally.Theseterminalsshouldhavecontinuity
regardlessoftheswitchposition.

Page5–17

ElectricalSystem:TestingtheElectricalComponents

TestingtheKeySwitch(continued)

4.Useamultimeter(ohmssetting)andtheprecedingtabletodetermine
whethercontinuityexistsbetweenthevariousterminalsforeachswitch
position.

5.Replacetheswitchifnecessary.

6.Iftheswitchtestscorrectlyandacircuitproblemstillexists,checkthewire
harnesses;refertoAppendixA(pageA–1).

7.Installtheswitchandconnectthewireharnessaftertesting.

8.Connectthebatterynegative(-)cableatthebattery .

ElectricalSystem:TestingtheElectricalComponents

Page5–18

ProForce®DebrisBlower

18237SLRevA

KeySwitch(forModel44554)

g235608

Figure23

1.Keyswitch2.Tethercontrolbox

TestingtheKeySwitch

POSITIONCLOSED

OFFNONE

RUN

STARTA+B+C

CIRCUITS

B+C+F ,D+E

Thekeyswitchonthetethercontrolboxhasthree(3)positions−OFF,RUN
andSTART.

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Removethetethercontrolboxcoveranddisconnectthewireharness
connectorfromtheswitch.Removetheswitchfromthecontrolboxif
necessary.

4.Useamultimeter(ohmssetting)andtheprecedingtabletodetermine
whethercontinuityexistsbetweenthevariousterminalsforeachswitch
position.

5.Replacetheswitchifnecessary.

ProForce®DebrisBlower
18237SLRevA

6.Iftheswitchtestscorrectlyandacircuitproblemstillexists,checkthewire
harnesses;refertoAppendixA(pageA–1).

7.Installtheswitchandconnectthewireharnessaftertesting.

8.Connectthebatterynegative(-)cableatthebattery .

Page5–19

ElectricalSystem:TestingtheElectricalComponents

HourMeter

g233942

Figure24

TestingtheHourMeter

1.Controltower

2.Hourmeter

ThehourmeterusedontheProForceDebrisBlowerrecordstheamountof
timethattheengineisrunning.

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Disconnectthewireharnessconnectorfromthehourmeterandremovethe
hourmeterfromthecontroltowerifnecessary.

4.Connectthepositive(+)terminalofthehourmetertothepositive(+)terminal
ofa12VDCpowersource.

5.Connectthenegative(-)terminalofthe12VDCpowersourcetotheother
terminalofthehourmeter.

6.Thehourmetershouldmove1/10ofanhourin6minutes.

7.Disconnectthevoltagesourcefromthehourmeter.

8.Replacethehourmeterifnecessary.

9.Ifthehourmetertestscorrectlyandacircuitproblemstillexists,checkthe
wireharnesses;refertoAppendixA(pageA–1).

ElectricalSystem:TestingtheElectricalComponents

10.Installthehourmeterandconnectthewireharnessaftertesting.

11.Connectthebatterynegative(-)cableatthebattery.

Page5–20

ProForce®DebrisBlower

18237SLRevA

NozzleDirectionSwitch(forModel44554)

g235609

1.Nozzledirectionswitch2.T ethercontrolbox

Figure25

Whentheleftsideofthenozzledirectionswitchispressedandheld,thenozzle
rotatesinthecounterclockwisedirection.Whentherightsideofthenozzle
directionswitchispressedandheld,thenozzlerotatesintheclockwisedirection.
Thenozzledirectionswitchislocatedonthetethercontrolbox.

TestingtheNozzleDirectionSwitch

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Removethetethercontrolboxcoveranddisconnectthewireharness

4.Useamultimeter(ohmssetting)andtheprecedingtabletodetermine

POSITIONCLOSED

RAISEor

FORWARD

OFFNONE

LOWERor
REVERSE

CIRCUITS

2+3,5+6

2+1,5+4

connectorfromtheswitch.Removetheswitchfromthecontrolboxif
necessary.

whethercontinuityexistsbetweenthevariousterminalsforeachswitch
position.

ProForce®DebrisBlower
18237SLRevA

5.Replacetheswitchifnecessary.

6.Iftheswitchtestscorrectlyandacircuitproblemstillexists,checkthewire
harness;refertoAppendixA(pageA–1).

7.Installtheswitchandconnectthewireharnessaftertesting.

8.Connectthebatterynegative(-)cableatthebattery .

Page5–21

ElectricalSystem:TestingtheElectricalComponents

EngineSpeedControl(forModel44554)

g235611

1.Enginespeedcontrol2.Tethercontrolbox

Theenginespeedcontrolisapotentiometerlocatedinthetethercontrolbox,
andisusedtocontroltheenginespeed(RPM).

TestingtheEngineSpeedControl

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Removethetethercontrolboxcoveranddisconnectthewireharness
connectorfromtheswitch.Removetheswitchfromthecontrolboxif
necessary.

Figure26

Note:Beforetakingthesmallresistancereadingswithadigitalmultimeter,

shortthemultimetertestleadstogether.Themeterdisplaysasmall
resistancevalue(usually0.5ohmsorless).Thisresistanceisbecauseofthe
internalresistanceofthemultimeterandtestleads.Subtractthisvaluefrom
themeasuredvalueofthecomponentthatyouaretesting.

4.Useamultimetertomeasuretheresistancebetweenthespeedcontrol
terminalsasfollows:

g235612

Figure27

1.T erminalA(signal)3.T erminalC(power)

2.T erminalB(ground)

ElectricalSystem:TestingtheElectricalComponents

A.CheckthattheresistancebetweentheterminalsBandCisapproximately

10,000ohms.Recordthemeasuredresistance.

Page5–22

ProForce®DebrisBlower

18237SLRevA

TestingtheEngineSpeedControl(continued)

5.Replacethespeedcontrolifnecessary.

6.Ifthespeedcontroltestscorrectlyandacircuitproblemstillexists,checkthe

7.Installthespeedcontrolandconnectthewireharnessaftertesting.

8.Connectthebatterynegative(-)cableatthebattery .

B.MeasuretheresistancebetweentheterminalsAandCandthenmeasure

theresistancebetweentheterminalsAandB.Recordtheseresistances.
Thetotalofthe2measuredresistancesshouldbeapproximately10,000
ohms.

C.RotatethespeedcontrolknobandrepeatstepB

wireharness;refertoAppendixA(pageA–1).

ProForce®DebrisBlower
18237SLRevA

Page5–23

ElectricalSystem:TestingtheElectricalComponents

Relays

g234235

Figure28

1.Startrelay

2.Controltower

3.Mainpowerrelay

4.Nozzlerelay2

5.Nozzlerelay1

TheelectricalsystemoftheProForceDebrisBloweruses4identicalelectrical
relaysthathave5terminals.Atagneartherelaywireharnessconnectorcan
beusedtoidentifyeachrelay.

Themainpowerrelayisusedtoprovideelectricalpowertothemachine.When
thekeyswitchisintheRUNorST ARTposition,themainpowerrelayisenergized.

Thestartrelayisusedintheenginestartingcircuittoprovideacurrentpath
toenergizetheenginestartersolenoid.Onmachineswithawirelessremote
(model44552,44552TE,and44553)thestartrelayisenergizedbytheTEC
whenanenginestartsignalisreceivedfromthehandheldremote,orwhen
thekeyswitchissettotheST ARTposition.Onmachineswithatethercontrol
box(modelNo.44554)thestartrelayisenergizedwhenthekeyswitchisset
totheSTARTposition.

The2nozzlerelaysareusedforenergizingthenozzlerotationmotor.On
machineswithawirelessremote(model44552,44552TE,and44553)therelays
areenergizedbytheTECwhenanozzlerotationsignalisreceivedfromthe
handheldremote.Onmachineswithatethercontrolbox(modelNo.44554)the
relaysareenergizedwhenthenozzledirectionswitchispressedfornozzle
rotation.

ElectricalSystem:TestingtheElectricalComponents

Therelaysaresecuredtotherearofthemachinecontroltower.

Page5–24

ProForce®DebrisBlower

18237SLRevA

TestingtheRelays

g235610

Figure29

1.Relay2.T ethercontrolbox

Note:Model44554machineshaveanadditional5terminalrelaylocatedinthe
tetheredcontrolbox.Thisrelayisnotpresentlybeingused.

1.Parkthemachineonalevelsurfaceandstoptheengine.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Locatetherelaytobetestedanddisconnectthewireharnessconnectorfrom
therelay.Removetherelayfromthecontroltowerifnecessary.

Note:Beforetakingthesmallresistancereadingswithadigitalmultimeter,
shortthemultimetertestleadstogether.Themeterdisplaysasmall
resistancevalue(usually0.5ohmsorless).Thisresistanceisbecauseofthe
internalresistanceofthemultimeterandtestleads.Subtractthisvaluefrom
themeasuredvalueofthecomponentthatyouaretesting.

ProForce®DebrisBlower
18237SLRevA

g256780

4.Testtherelayasfollows:

Figure30

Page5–25

ElectricalSystem:TestingtheElectricalComponents

TestingtheRelays(continued)

A.Checkthecoilresistancebetweentheterminals85and86witha

multimeter(ohmssetting).Theresistancemustbeapproximately70
to90ohms.

B.Connectthemultimeterleadstotherelayterminals30and87.Then

groundterminal85andapply+12VDCtoterminal86.Therelayshould
makeandbreakthecontinuitybetweenterminals30and87as+12VDC
isappliedandremovedfromterminal86.

C.Connectthemultimeterleadstotherelayterminals30and87A.Then

groundterminal85andapply+12VDCtoterminal86.Therelayshould
makeandbreakthecontinuitybetweenterminals30and87Aas+12
VDCisappliedandremovedfromterminal86.

5.Aftertesting,disconnectthevoltageandmultimetertestleadsfromthe
relayterminals.

6.Replacetherelayifnecessary.

7.Iftherelaytestscorrectlyandacircuitproblemstillexists,checkthewire
harness;refertoAppendixA(pageA–1).

8.Installthespeedcontrolandconnectthewireharnessaftertesting.

9.Connectthebatterynegative(-)cableatthebattery .

ElectricalSystem:TestingtheElectricalComponents

Page5–26

ProForce®DebrisBlower

18237SLRevA

CANbusTerminatorResistors

g223018

Figure31

1.CAN-busterminatorresistor

2.Keyway

ThesystemcommunicationbetweentheelectricalcomponentsontheProForce
DebrisBlowerisaccomplishedonaCANbuscommunicationsystem.The2
speciallydesigned,twistedcablesformthebusforthenetworkareusedon
themachine.Thesewiresprovidethedatapathwaysbetweenthemachine
components.TheengineeringtermforthesecablesareCANHighandCAN
Low.TheCANbuswiresareeitherred/whiteoryellow(CANHigh)andeither
black/whiteorgreen(CANLow).A120ohmterminationresistorislocatedat
eachendoftheCAN–bus.

Thecanbusisincorporatedintothemachinewireharnessofallmodel44552,
44552TE,44553,and44554machines.Onlymachineswithwirelessremote
control(model44552,44552TE,and44553)havecomponentsthatusethe
CANbusforcommunication.

Oneoftheresistorsissecuredtothemachinewireharnessnearthestarted
motor,andoneoftheresistorsissecuredtothemachinewireharnessnearthe
keyswitchinthecontroltower(batteryremovalmaybenecessarytoaccess
theresister).

RefertotheElectricalSchematicsandWireHarnessDrawings/Diagramsin

AppendixA(pageA–1)foradditionalinformationonthelocationoftheterminator

resistorandwireconnections.

Theinsulatorwedgeintheterminatorresistorisblueforidenticationpurposes.
Thereisalsoacenterkeywaytopreventtheterminatorresistorfrombeing
pluggedintothewrongwireharnessconnector.

Bothterminatorresistorsarerequiredforproperelectricalsystem
operation.

TestingtheCANbusTerminatorResistor

1.MakesurethatkeyswitchisOFFandkeyisremovedfromtheswitch.

2.Unplugtheresistorfromthewireharness.

3.Useadigitalmultimeter(ohmssetting)tomeasuretheresistancevaluefor

4.Replacetheresistorifnecessary .

ProForce®DebrisBlower
18237SLRevA

IMPORTANT

theCANbusterminatorresistor.Thereshouldbe120ohmsresistance
betweentheterminalsAandB.TheterminalCisnotused.

Page5–27

ElectricalSystem:TestingtheElectricalComponents

TestingtheCANbusT erminatorResistor(continued)

5.Iftheresistortestscorrectlyandacircuitproblemstillexists,checkthe
remainderoftheCANbus;refertoAppendixA(pageA–1)orcontactan
AuthorizedT oroDistributorforassistance.

6.Aftertesting,ensurethattheCANbusterminatorresistorisfullyinstalledinto
thewireharnessconnectorandsecuredtothewireharnesswithcabletie.

ElectricalSystem:TestingtheElectricalComponents

Page5–28

ProForce®DebrisBlower

18237SLRevA

DiagnosticLamp(forModels44552,44552TE,and44553)

g279250

Figure32

TestingtheDiagnosticLamp

1.DiagnosticLamp(LED)

2.Gasket5.Redwire(+)

3.Lockwasher

4.Hexhut

6.Blackwire(-)

MachineswithwirelessremotecontrolhaveanLEDdiagnosticlightlocatedon
themachinecontroltower.TheTECcontrollerusesthediagnosticlight(output)
tonotifytheoperatorortheservicetechnicianofanissuethatmayexistwiththe
machine;refertoUsingtheOnboardDiagnosticLamp(page3–3).

1.MakesurethatkeyswitchisOFFandkeyisremovedfromtheswitch.

2.Disconnectthediagnosticlightconnectorfromthewireharness.

Note:ThediagnosticlightisanLightEmittingDiode(LED)andistherefore
polaritysensitive.

3.Connecta12VDCpowersource(machinebattery)tothediagnosticlight
terminals.Thelightshouldonlyilluminatewhenthepositive(+)leadofthe
powersupplyisconnectedtothepositive(+)redwire,andthenegative(-)
leadofthepowersupplyisconnectedtothenegative(-)blackwire.

4.Replacethediagnosticlightifnecessary .

5.Ifthediagnosticlighttestscorrectlyandacircuitproblemstillexists,check
thewireharness;refertoAppendixA(pageA–1).

ProForce®DebrisBlower
18237SLRevA

6.Installthediagnosticlightifnecessaryandconnectthewireharnessafter
testing.

Page5–29

ElectricalSystem:TestingtheElectricalComponents

NozzleMotor

Themotorusedtorotatethenozzleisareversible12VDCelectricmotorwithan
integratedgearbox.Theassemblycomponentsarenotserviceableseparately.

g279312

Figure33

TestingtheNozzleMotor

1.Nozzlemotorassembly2.Nozzlemotorconnector

1.MakesurethatkeyswitchisintheOFFposition.

2.Disconnectthenozzlemotorconnectorfromthewireharness.

3.Connecta12VDCpowersource(machinebattery)tothenozzlemotor
terminals.Themotorshaftshouldrotateclockwise(viewedfromtheshaft
end)smoothlyandquietlywhenthepositive(+)leadofthepowersupply
isconnectedtothe(C)terminalofthemotorconnector,andthenegative
(-)leadofthepowersupplyisconnectedtothe(B)terminalofthemotor
connector.Themotorshaftshouldrotatesmoothlyandquietlyintheopposite
directionwhenthepowersupplywiresarereversed.

4.Loosenthenozzlemotorbracketandremovethedrivebeltfromthemotor
pulley.

5.Connectanammeterormultimeter(DCamps)intothepositive(+)leadof
thepowersupply.Themotorshoulddrawlessthan2ampsundernoload.

6.Replacethemotorassemblyifnecessary;refertoNozzleMotor(page5–32).

7.Ifthenozzlemotortestscorrectlyandacircuitproblemstillexists,checkthe
wireharness;refertoAppendixA(pageA–1).

ElectricalSystem:TestingtheElectricalComponents

8.Installthenozzlemotorassemblyanddrivebeltifnecessaryandconnect
thewireharnessaftertesting.

Page5–30

ProForce®DebrisBlower

18237SLRevA

ServiceandRepairs

Note:RefertotheKohlerEngineServiceManual(includedattheendofEngine

(page4–11))forengineelectricalcomponentrepairinformation.

ProForce®DebrisBlower
18237SLRevA

Page5–31

ElectricalSystem:ServiceandRepairs

NozzleMotor

g233406

Figure34

1.Nozzle10.Nozzlemotor

2.Nozzleclamp

3.V-belt12.Motorbracket

4.Bolt(6each)13.Flangenut(4each)

5.Spacer(8each)14.Flange-headscrew(2each)23.Flatwasher(10each)

6.Nozzlepulley15.Drivepulley

7.Nozzleguide(4each)

8.Outerhousing

9.Flangenut(10each)18.Bolt(4each)

11.Bolt(3each)

16.Locknut

17.Beltguard

19.Ballbearing(3each)

20.Locknut

21.Leafspring

22.Shoulderbolt

24.Flatwasher(4each)

25.Bolt(2each)

RemovingtheNozzleMotor

RefertoFigure34forthefollowingprocedure.

1.Parkthemachineonalevelsurface,shutofftheengine,andremovethekey
fromthekeyswitch.Blockthewheelswithchockstopreventthemachine
frommoving.

2.Disconnectthebatterynegative(-)cableatthebattery.

3.Unplugthewireharnessconnectorfromthenozzlemotor.

ElectricalSystem:ServiceandRepairs

4.Loosen,butdonotremovethelocknut(item16)thatsecuresthedrivepulley
tothenozzlemotorshaft.Loosenthelocknutatleast2turns.

5.Removethe2boltsand2angenutsthatsecuretheleafspring(item21)to
themotorbracket,andremovetheleafspringwithbearingandatwashers
fromthebracket.

Page5–32

ProForce®DebrisBlower

18237SLRevA

RemovingtheNozzleMotor(continued)

InstallingtheNozzleMotor

6.Loosenthe2ange-headscrews(item14)and2angenutsthatsecurethe
nozzlemotorbrackettotheouterhousing.Rotatethebracketandnozzle
motortoloosentheV-belt.

7.Loosenthe2boltsand2angenutsthatsecurethebeltguard(item17),
routeV-beltfrombehindguardandcarefullyremovethebeltfromthe
machine.

Note:Thenozzlemotorshaftistapered.

8.Useappropriatepullertoremovethedrivepulleyfromthenozzlemotor.

9.Removethe3boltsthatsecurethenozzlemotortothebracket,andremove
thenozzlemotorfromthemachine.

RefertoFigure34forthefollowingprocedure.

1.Positionthenozzlemotortothebracketandsecurethemotorwiththe3bolts.

2.Cleanthetaperedsurfacesofthemotorshaftanddrivepulley.

3.Slidethedrivepulleyontothemotorshaftandsecurewiththelocknut.

4.PlacetheV-beltinthenozzlepulley ,routebehindthebeltguard(item17)
andinstallthebeltonthemotorpulley.

Note:Donotovertensionthebelt.

5.Witha3/8inchdrivetorquewrench,pivotthemotorbracketfrom23to25
N∙m(200to230in-lb)tosettheV-belttension(Figure35).Holdthebracket
withthetorquewrenchandtightenthe2ange-headscrewsand2ange
nutstosecurethebracket.

g233396

Figure35

1.Drivepulley

2.T orquewrenchaccess

3.Leafspringassembly

4.Flange-headscrew(2each)

ProForce®DebrisBlower
18237SLRevA

6.CenterthebeltguardaroundtheV-belt.Securethebeltguardtothemachine
withthe2boltsand2angenuts.

7.Positiontheleafspringwithbearingandatwasherstothebracket.Ensure
that5washersareplacedbetweenthespringandthebracketateach
mountinghole.Thebearingontheleafspringshouldbecenteredonthe
outsideoftheV-belt.Securetheleafspringtothemotorbracketwith2bolts
and2angenuts.

8.Connectthewireharnessconnectortothenozzlemotor.

Page5–33

ElectricalSystem:ServiceandRepairs

InstallingtheNozzleMotor(continued)

9.Connectthebatterynegative(-)cableatthebattery .

10.T estthenozzlerotationbeforereturningthemachinetoservice.

ElectricalSystem:ServiceandRepairs

Page5–34

ProForce®DebrisBlower

18237SLRevA

CaringfortheBattery

1.Thebattery-electrolytelevelmustbeproperlymaintained.Thetopofthe
batterymustbekeptclean.Ifthemachineisstoredinalocationwherethe
temperaturesareextremelyhigh,thebatterywilldischargemorerapidlythan
ifthemachineisstoredinalocationwherethetemperaturesarecool.

WARNING

•Wearsafetygogglesandrubbergloveswhenworkingwith

electrolyte.

•Chargebatteryinawellventilatedplacesogassesproduced

whilechargingcandissipate.

•Sincethegasesareexplosive,keepopenamesandelectrical

sparksawayfromthebattery;donotsmoke.

•Nauseamayresultifthegasesareinhaled.

•Unplugchargerfromelectricaloutletbeforeconnectingor

disconnectingchargerleadstoorfrombatteryposts.

2.Checkbatteryconditionweeklyorafterevery50hoursofoperation.Keep
terminalsandentirebatterycasecleanbecauseadirtybatterywilldischarge
slowly.

IMPORTANT

Donotremovellcapswhilecleaning.

A.Cleanbatterybywashingentirecasewithasolutionofbakingsodaand

water.Rinsewithclearwater.

B.CoatbatterypostsandcableconnectorswithT oroPartNo.107-0392

batteryterminalprotectororpetroleumjellytopreventcorrosion.

WARNING

Connectingthecablestothewrongbatterypostcouldresultin
personalinjuryand/ordamagetotheelectricalsystem.

Ensurethatthecablesareproperlyconnectedtothecorrectbattery
postsbeforeoperatingthemachine.

3.Tightenthebatterycablesonthebatteryterminalstoprovideagood
electricalcontact.

4.Ifcorrosionoccursatthebatteryterminals,disconnectthebatterycables.
Alwaysdisconnectthenegative(-)cablerst.Cleanthecableclampsand
terminalsseparately.Connectthebatterycables.Alwaysconnectthe
positive(+)cablerst.ApplyacoatingofToroPartNo.107-0392battery
terminalprotectororalightcoatofpetroleumjellytotheterminalstoreduce
corrosionafteryoumaketheconnections.

5.Checkthebattery-electrolytelevelevery25operatinghoursandevery30
daysifmachineisinstorage.

ProForce®DebrisBlower
18237SLRevA

Note:Donotllthecellsabovethellline.

6.Maintainthecelllevelwiththedistilledordemineralizedwater.

Page5–35

ElectricalSystem:ServiceandRepairs

StoringtheBattery

Ifyoustorethemachineformorethan30days:

1.Removethebatteryandchargeitfully;refertoChargingtheBattery(page

5–42).

2.Storethebattery:

•onashelforonthemachine

•withcablesdisconnectedifstoredonthemachine

•inacoolatmospheretoavoidquickdeteriorationofthebatterycharge

•inanenvironmentthatwillnotbebelowfreezingforanextendedperiod

ElectricalSystem:ServiceandRepairs

Page5–36

ProForce®DebrisBlower

18237SLRevA

ServicingtheBattery

g279482

Figure36

1.Battery

2.Batterypositive(+)cable

3.Startermotor

4.Batterynegative(-)cable

5.Engineandchassisground

BatterySpecications

Battery-electrolytespecicgravityFullyCharged:1.25to1.28at27°C(80°F)

Discharged:lessthan1.24

BatteryspecicationsBCIGroup26

540CCAat-18°C(0°F)

ReserveCapacityof80minutesat27°C(80°F)

Batterydimensions(includingterminalposts
andcaps)

Length22.4cm(8.8inches)

Width16.8cm(6.6inches)

Height18.3cm(8.0inches)

Thebatteryistheheartoftheelectricalsystem.Withtheregularandcorrect
service,thebatterylifecanbeextended.Additionally,thebatteryandelectrical
componentfailurecanbeprevented.

ProForce®DebrisBlower
18237SLRevA

Page5–37

ElectricalSystem:ServiceandRepairs

CAUTION

Battery-electrolyteiscorrosiveandcanburnskinandeyesand
damageclothing.

Whileworkingwiththebatteries,useextremecautiontoavoid
splashingorspillingoftheelectrolyte.Alwayswearthesafety
gogglesandafaceshieldwhileworkingwithbatteries.

ElectricalSystem:ServiceandRepairs

Page5–38

ProForce®DebrisBlower

18237SLRevA

RemovingandInstallingtheBattery

ProForce®DebrisBlower
18237SLRevA

g234239

Figure37

1.Hairpincotter(2each)7.Controltower

2.Batterycover

3.Battery9.Batterycoverbracket

4.Batterypositive(+)cable10.Bolt(2each)

5.Flangenut

6.Batteryretainer

Page5–39

8.Carriagescrew

11.Clip(2each)

12.Batterynegative(-)cable

ElectricalSystem:ServiceandRepairs

RemovingandInstallingtheBattery(continued)

Becarefulwhenremovingthebatterycablesandensurethatyoudo
notdamagetheterminalpostsorcableconnectors.

1.Parkthemachineonalevelsurface,shutofftheengine,andremovethekey
fromthekeyswitch.Blockthewheelswithchockstopreventthemachine
frommoving.

2.Removethebatterycover.

3.Loosenandremovethenegative(-)cablefromthebattery.Positionthe
disconnectedcableawayfromthebattery .

4.Disconnectthepositivecable(+)fromthebattery .

5.Removethecarriagescrewandangenutthatsecuresthebatteryretainer.

6.Carefullyremovethebatteryfromthemachine.

7.Installthebatteryinreverseorder.

8.Connectandtightenthepositive(+)cabletothebatterybeforeconnecting
negative(-)cable.Tightenthebatteryterminalnutsfrom14to20N·m(10

to15ft-lb).

IMPORTANT

9.Applyathincoatingofbatteryterminalprotectortothebatterycable
terminals;refertoBatteryT erminalProtector(page2–12).

10.Installthebatterycover.

Inspecting,Maintaining,andTestingtheBattery

TemperatureCorrectingSpecicGravity

CellT emperature100°F

CellSpecicGravity

38°Cminus27°Cequals1 1.0°C

(100°Fminus80°Fequals20°F)

11°Cmultiplyby0.004/5.5°Cequals0.008

(20°Fmultiplyby0.004/10°Fequals0.008)

ADD(conversionabove)

Correctionto27°C(80°F)

MinimumVoltage

MinimumVoltageBattery-ElectrolyteTemperature

9.6

9.5

9.4

9.3

9.1

8.9

8.7

8.5

1.245

0.008

1.253

70°F(andup)21°C(andup)

60°F15°C

50°F10°C

40°F4°C

30°F-1°C

20°F-7°C

10°F-12°C

0°F-18°C

ElectricalSystem:ServiceandRepairs

Page5–40

ProForce®DebrisBlower

18237SLRevA

Inspecting,Maintaining,andTestingtheBattery(continued)

1.Inspectthebatteryasfollows:

A.Checkforcracks.Replacethebatteryifcrackedorleaking.

B.Checkthebatteryterminalsforcorrosion.Usethewirebrushtoclean

corrosionfromtheposts.

Beforecleaningthebattery,tapeorblocktheventholesofthe
llercapsandensurethatthecapsaresecure.

C.Checkforthesignsofwetnessorleakageonthetopofthebatterywhich

mightindicatealooseormissingllercap,overcharging,looseterminal
post,oroverlling.Also,checkthebatterycasefordirtandoil.Cleanthe
batterywithasolutionofbakingsoda(sodiumbicarbonate)andwater,
thenrinseitwithcleanwater.

D.Checkthatthecoversealisnotbrokenaway .Replacethebatteryifthe

sealisbrokenorleaking.

IMPORTANT

IMPORTANT

Makesuretheareaaroundthebatterycapsiscleanbefore
openingthecaps.

E.Checktheelectrolytelevelineachcell.Ifthelevelisbelowthetopsof

theplatesinanycell,llallthecellswithdistilledwaterbetweenthe
minimumandmaximumlllines.Chargeat15to25Afor15minutesto
allowsufcientmixingoftheelectrolyte.

2.Performthehydrometertestofthebattery-electrolyte.

IMPORTANT

Makesuretheareaaroundthebatterycapsiscleanbeforeopening
thecaps.

A.Useahydrometertomeasurethespecicgravityofeachcell.Pullthe

electrolyteinandoutofthehydrometerbarrelbeforetakingareading
towarm-upthehydrometer.Atthesametime,takethetemperatureof
thecell.

B.T emperaturecorrecteachcellreading.Foreach6°C(10°F)above27°C

(80°F)add0.004tothespecicgravityreading.Foreach6°C(10°F)
below27°C(80°F)subtract0.004fromthespecicgravityreading;refer
toTemperatureCorrectingSpecicGravity(page5–40).

ProForce®DebrisBlower
18237SLRevA

C.Ifthedifferencebetweenthehighestandlowestcellspecicgravityis

0.050ormoreorthelowestcellspecicgravityislessthan1.225,charge
thebattery.

D.ChargeattherateandtimegiveninBatteryChargeRate(page5–42)

oruntilallcellsspecicgravityis1.225orgreaterwiththedifference
inspecicgravitybetweenthehighestandlowestcellbeinglessthan

0.050.Ifyoucannotmeetthesechargingconditions,replacethebattery.

Page5–41

ElectricalSystem:ServiceandRepairs

Inspecting,Maintaining,andTestingtheBattery(continued)

3.Doahigh-dischargetestwithanadjustableloadtester.Thisisaveryreliable
meansoftestingabatteryasitsimulatesthebatterycold-crankingcapacity.
Acommercialbatteryloadtesterisrequiredtodothistest.

Followthemanufacturer'sinstructionswhenusingabatteryload
tester.

A.Checkthevoltageacrossthebatteryterminalsbeforetestingthebattery.

Ifthevoltageislessthan12.0VDC,chargethebatterybeforecontinuing
thetest.

B.Ifyouchargethebattery,applya150Aloadfor15secondstoremove

thesurfacecharge.Useabatteryloadtesterfollowingthemanufacturer's
instructions.

C.Ensurethatthebatteryterminalsarefreeofcorrosion.

D.Measuretheelectrolytetemperatureofthecentercell.

E.Connectabatteryloadtestertothebatteryterminalsfollowingthe

manufacturer'sinstructions.Connectadigitalmultimetertothebattery
terminals

F.Applyatestloadof1/2thecoldcrankingamperageratingofthebattery;

refertoBatterySpecications(page5–37).

G.T akeatestvoltagereadingwhilestillunderloadafter15seconds,then

immediatelyremovetheload.

H.UseMinimumVoltage(page5–40)todeterminetheminimumvoltagefor

thecentercellelectrolytetemperaturereading.

I.Ifthetestvoltageisbelowtheminimum,replacethebattery.Ifthetest

voltageisatorabovetheminimum,returnthebatterytoservice.

CAUTION

ChargingtheBattery

BatteryChargeLevel

BatteryChargeLevelSpecicGravityOpenCircuitVoltage

1.26512.68

1.22512.45

1.19012.24

1.15512.06

1.12011.89

BatteryChargeRate

Battery

Reserve
Capacity
(Minutes)

80orless

81to125

126to170

100%

75%

50%

25%

0%

BatteryChargeLevel(PercentofFullyCharged)

75%50%25%0%

3.8hrs@3A7.5hrs@3A11.3hrs@3A15hrs@3A

5.3hrs@4A10.5hrs@4A15.8hrs@4A21hrs@4A

5.5hrs@5A11hrs@5A16.5hrs@5A22hrs@5A

ElectricalSystem:ServiceandRepairs

Page5–42

ProForce®DebrisBlower

18237SLRevA

ChargingtheBattery(continued)

BatteryChargeRate(continued)

171to250

above250

5.8hrs@6A11.5hrs@6A17.3hrs@6A23hrs@6A

6hrs@10A12hrs@10A18hrs@10A24hrs@10A

Tominimizedamagetothebatteryandallowthebatterytochargefully,usethe
followingslowchargingprocedure.Youcanaccomplishthischargingprocedure
withaconstantcurrentbatterychargerthatisavailablelocally.

IMPORTANT

Followthemanufacturer'sinstructionswhenusingabatterycharger.

Note:Usingthespecicgravityofthebatterycellsisthemostaccurate

procedureofdeterminingthebatterycondition.

1.UseBatteryChargeLevel(page5–42)todeterminethebatterychargelevel
fromthespecicgravityofthebatterycellsoropencircuitvoltage.

2.Usethemanufacturer'sbatterychargerinstructionsorBatteryChargeRate

(page5–42)todeterminethechargingtimeandrate.

CAUTION

Chargingafrozenbatterycancauseexplosionandcancause
personalinjury.Letthebatterywarmto15°C(60°F)before
connectingtoacharger.

•Chargethebatteryinawell-ventilatedplacetodissipatethe

gasesproducedfromthecharging.

•Thesegasesareexplosive;keepopenameandelectrical

sparkawayfromthebattery.Donotsmoke.

•Inhalingthebatterygasescancausenausea.

•Unplugthechargerfromtheelectricaloutletbeforeconnecting

ordisconnectingthechargerleadsfromthebatteryterminals.

3.Followthebatterychargermanufacturer'sinstructions,connectthecharger
cablestothebatteryterminals.Ensurethatyoumakeagoodconnection

4.Chargethebatteryfollowingthemanufacturer'sinstructions.

5.Occasionallycheckthetemperatureofthebattery-electrolyte.Ifthe
temperatureismorethan52°C(125°F)ortheelectrolyteisviolentlygassing
orspewing,lowerthechargerateortemporarilystopchargingthebattery .

6.Beginningthreehoursbeforetheendofthescheduledcharge,measurethe
specicgravityofabatterycellonceperhour.

Note:Thebatteryisfullychargedwhenthecellsaregassingfreelyata
lowchargingrateandthereislessthana0.003changeinspecicgravity
for3consecutivereadings.

ProForce®DebrisBlower
18237SLRevA

Page5–43

ElectricalSystem:ServiceandRepairs

ElectricalSystem:ServiceandRepairs

Page5–44

ProForce®DebrisBlower

18237SLRevA

Chapter6

BlowerAssembly

TableofContents

GeneralInformation..............................................................................................................................6–2

ServiceandRepairs.............................................................................................................................6–3

BlowerDriveShaft.............................................................................................................................6–4

ReplacementBlower..........................................................................................................................6–6

RotorAssembly..................................................................................................................................6–8

RotorShaft.......................................................................................................................................6–10

InnerHousingAssembly..................................................................................................................6–12

NozzleAssembly.............................................................................................................................6–16

ProForce®DebrisBlower
18237SLRevA

Page6–1BlowerAssembly

GeneralInformation

TheOperator’sManualprovidesinformationregardingtheoperation,general
maintenance,andmaintenanceintervalsforyourProForceDebrisBlower.Refer
totheOperator’sManualforadditionalinformationwhenservicingthemachine.

BlowerAssembly:GeneralInformation

Page6–2

ProForce®DebrisBlower

18237SLRevA