Snap-On EEWB330A User manual

EEWB330A
HANDSPINWHEELBALANCER
For:
PASSENGERCARSANDLIGHTTRUCKWHEELS

OperatingInstructions

FormZEE330ARevC


For your safety, read this manual thoroughly
before operating the Model EEWB330AWheel Balancer
The Model EEWB330AWheel Balancer is intended for use by properly trained auto-
motive technicians. The safety messages presented in this section and throughout the
manual are reminders to the operator to exercise extreme caution when servicing tires
with these products.
There are many variations in procedures, techniques, tools, and parts for balancing
tires,aswellastheskilloftheindividualdoingthework. Becauseofthevastnumberof
wheel and tire applications and potential uses of the product, the manufacturer cannot
possibly anticipate or provide advice or safety messages to cover every situation. It is
the automotive technician's responsibility to be knowledgeable of the wheels and tires
being serviced. It is essential to use proper service methods in an appropriate and
acceptable manner that does not endanger your safety, the safety of others in the work
area or the equipment or vehicle being serviced.
It is assumed that, prior to using theModel EEWB330AWheel Balancer, the operator
has a thorough understanding of the wheels and tires being serviced. In addition, it is
assumedhehasathoroughknowledgeoftheoperationandsafetyfeaturesoftherack,
lift, or floor jack being utilized, and has the proper hand and power tools necessary to
service the vehicle in a safe manner.
Before using the Model EEWB330AWheel Balancer, always refer to and follow the
safety messages and service procedures provided by the manufacturers of the equip-
ment being used and the vehicle being serviced.
IMPORTANT !! SAVE THESE INSTRUCTIONS -- DO NOT DISCARD !!
SAFETY INFORMATION

IMPORTANT SAFETY INSTRUCTIONS
When using this equipment, basic safety precautions should always be followed,
including the following:
1. Read all instructions.
2. Donotoperateequipmentwithadamagedpowercordoriftheequipmenthasbeen
damaged - until it has been examined by a qualified authorized service technician.
3. If an extension cord is used, a cord with a current rating equal to or more than that
of the machine should be used. Cords rated for less current than the equipment
mayoverheat. Careshouldbetakentoarrangethecordsothatitwillnotbetripped
over or pulled.
4. Always unplug equipment from electrical outlet when not in use. Never use the
cord to pull the plug from the outlet. Grasp plug and pull to disconnect.
5. To reduce the risk of fire, do not operate equipment in the vicinity of open
containers of flammable liquids (gasoline).
6. Keephair,loosefittingclothing,fingersandallpartsofthebodyawayfrommoving
parts.
7. Adequate ventilation should be provided when working on operating internal
combustion engines.
8. To reduce the risk of electric shock, do not use on wet surfaces or expose to rain.
9. Do not hammer on or hit any part of the control panel with weight pliers.
10. Do not allow unauthorized personnel to operate the equipment.
11. Do not disable the hood safety interlock system or bypass the intended operation.
12. Use only as described in this manual. Use only manufacturer’s recommended
attachments.
13. Always securely tighten the wing nut before spinning the shaft.
14. ALWAYS WEAR SAFETY GLASSES. Everyday eyeglasses only have impact
resistant lenses, they are NOT safety glasses.
15. Balancer is for indoor use only.
SAVE THESE INSTRUCTIONS

1.0 INTRODUCTION
Congratulations on purchasing the EEWB330Ahandspin wheel balancer. This wheel balancer is de-
signed for ease of operation, accuracy, reliability and speed. With a minimum of maintenance and care
yourwheel balancerwillprovidemanyyears oftrouble-freeoperation.
Instructions on use, maintenance and operational requirements of the machine are covered in this
manual.
STORE THIS MANUAL IN A SAFE PLACE FOR FUTURE REFERENCE.
READ THIS MANUAL THOROUGHLY BEFORE USING THE MACHINE.
1.1 SAFETY NOTICE
This manual is a part of the balancer product.
Read carefully all warnings and instructions of this manual since they provide important information
concerning safety and maintenance.
1.2 BALANCER APPLICATION
TheSnap-on wheelbalancermodelEEWB330Aisintendedtobeusedasequipmenttobalancecar,and
lighttruck wheelswithin thefollowing range:
Maximum wheel diameter : 42” (1067mm)
Maximumwheelwidth : 20” (508mm)
Maximum wheel weight : 120lbs (54 kg)
This equipment is to be only used in the application for which it is specifically designed.
Any other use shall be considered as improper and abusive.
The manufacturer shall not be considered liable for possible damages caused by improper, wrong, or
abusive use of this equipment.

Snap‐onEEWH330AHandspinWheelBalancer
1.3EEWB330ASPECIFICATIONS

Computerizeddigitalwheelbalancerforcar,light
truckwheels.

WeightImbalanceAccuracy.10oz/2grams
WeightPlacementResolution±.7degrees
WeightImbalanceResolution:
RoundoffMode.25oz/5grams
Non‐RoundoffMode.05oz/1gram
Max.ShaftWeightCapacity120lbs/54kg
Max.TireDiameter42"/1067mm

RimWidthCapacity3"‐20"/76mm‐508mm
Rim DiameterCapacity8"‐30"/203mm‐762mm
BalancingCycleTime.6 to 8secondsorless
Shaft Speedatcalculation<100RPM
Electrical1151ph,60Hz,2A
RequiredWorkArea62"wx50"d1524x1270mm
ShippingWeight,unit/pallet/carton210lbs/99kg
ShippingDimensions48”h40”w28”d
MachineDimensions40”h38”w21”d
ActualWeightwithAccessories174lbs/79kg
OperatingTemperatureRange32‐122F/0‐50C




 





1.4FEATURES

ACCURACY
•Weightplacementaccuracyis±.7°
•Weightimbalanceaccuracyto2grams.
•Selftestcheckwitheverypowerupcycle.
•Fastoperatorcalibration.
•Pre‐programmedErrorCodesindicateprocedural
errorsorsafetyconcerns.

SPEEDandDURABILITY
•Automaticdistanceanddiameterentry.Simplytouch
theSAPEarmtothewheel,thedistanceanddiameter
parameterisautomaticallyentered.
•Quickclampspeednutreduceswheelmountingtime.
•Capturedbackspringeliminateshavingtohandlethe
backingspring.
•Quickcycletime.
•Automaticrecalculationifweightpositionsare
changed.Noneedforre‐spinningthewheel.
•Common40mmdiametermountingshaft.
•Weightpocketstoragetray.
•Easy‐to‐ReadDatadisplay.
•Easyweighttrayaccess.

SOFTWAREVERSATILITY
•BothdualweightDynamicandsingleweightStatic
capability.
•MatchBalanceprogramforreducingweightrequired.
•Built‐inspincounterformonitoringbalancer
productivity.
•ServicecodeaccesstoallBalancerelectronic
functionsforfast,easydiagnosis.
•Operatorselectableroundoffmode.
•5AluminumModes
•Alu‐Smode
•Ounce/Gramtogglefromfrontpanel
•Multipleoperatorfeatureallowsseveraloperatorsto
recallwheelparameters.








ModelEEWB330AHandspinWheelBalancer____________________________________________________

1.5STANDARDACCESSORIES

Figure2
Standardaccessories(Figures1,2,and3,)
includedwiththeEEWB331Aare:
1EAM0003J69ACone,87‐137mm/3.4”‐5.4”2
EAM0005D25ACone,96‐114mm/3.8”‐4.5”3
EAM0005D24ACone,71‐99mm/2.8”‐3.9”4
EAM0003D23ACone,40‐76mm/1.6”‐3.0”5
EAC0058D07ACup‐Pressure6EAC0058D08A
Disk‐Pressure7EAA0263G66AQuickNut8
EAM0005D40AWeight‐Calibration9
EAM0021D90AStandard40mmStubShaft
WeightPliers(Figure3).
Versatileweighthammer/plier.Inadditionto
hammeringonweightandusedweightremoval,the
hammer/pliercanbeusedtoreshapewornweightclips
andtrimweighttosize.
10EAA0247G21ACaliper‐RimWidth11
EAC0060G02AFlange‐Cover,Hook12
EAM0006G01APin‐Accessory1358839
WeightPliers14EAM0005D34A
FasteningRod15EAC0058D15ASoft
Protectorring 
1.6OPTIONALACCESSORIES
Snap‐onDeluxeWheelWeightPlier–WWPR13A






Snap‐onEEWH330AHandspinWheelBalancer
PRE‐INSTALLATIONCONSIDERATIONS
1.7DIMENSIONSOFTHEMACHINE



Figure4‐ActualFootprintDimensions.

1.8REQUIREDINSTALLATIONAREA

Makesurethatfromtheoperatingpositionthe
usercanseeallofthemachineandthe
surroundingarea.


Theoperatorshouldpreventnonauthorized
personsand/orobjectsfromenteringthearea
whichmaycre‐atepotentialhazards.

Themachineshouldbeinstalledonastablelevel
floor.Donotinstallthemachineonaunevenfloor.

Ifthebalanceristobeinstalledonaraisedfloor,
thefloormusthaveacapacityofatleast110lbsper
sqft.(5000N/m²‐500kg/m²).

Itisnotrequiredtosecurethemachinetothe
floor.

Installthemachineinadry,coveredarea.

Theinstallationofthemachinerequiresaworking
areaofatleast62”x50”(1574x1270mm)
(Figure5).

NOTE:Donotinstallthebalancerbelowgradelevel
orinapit.




Figure5‐RecommendedWorkArea

1.9INSTALLATIONINSTRUCTIONS

CAUTION!CAREFULLYREMOVETHEBALANCERFROM
THEPALLET.
Removethehardwarethatsecuresthemachinetothe
palletandslidethebalancerontothefloorwhereitisto
beinstalled.
THEUNITISHEAVYANDTHEWEIGHTISNOTEVENLY
DISTRIBUTED.
DONOTLIFTTHEBALANCERBYTHESHAFT.
DROPPINGTHEUNITMAYCAUSEPERSONALINJURY
OREQUIPMENTDAMAGE.

2.0BALANCERINSTALLATION
MountingtheShaftAdapter
IMPORTANT!CHECKTHATTHESURFACESARE
PERFECTLYCLEANANDNOTDAMAGED.ANINCORRECT
MOUNTINGMAYRESULTINSIGNIFICANTIMBALANCE.
A. Mountthethreadedshaftontothearborofthe
bal‐ancer.Tightenfirmlyusingsuppliedrod.
(Figure6).

 





Snap‐on EEWB330A Handspin Wheel Balancer_________________________________________
Beforeusingthewheelbalanceritissuggestedthatyou
becomefamiliarwiththeterminologyandfeaturesofthe
machine’scomponents.RefertoFigures9and10for
identificationandlocation.



1.Parameters‐
RimOffset‐Keyisusedtoentertherimoffsetposition
usingnumbersfromthedistancegauge.
RimWidth‐Pressthiskeytoentertherimwidth.Usethe
rimwidthcalipersformeasurement.
RimDiameter‐Entertherimdiameter.Readthesize
statedonthetiresidewall.
2.InsideWeightAmountandFunctionDisplay
Window‐Showsinsideorleftweightamountandvarious
operationmessages.
3.PositionIndicatorLEDs‐Displaysthelocationfor
wheelweightplacement.

4.OutsideWeightAmountandFunctionDisplay
WindowShowsoutsideorrightweightamountand
variousoperationmessages.
5.EnterKey–Storesthedata.
Figure9
6.Modekey–Allowstheoperatortoenterthespecial
functionsmode.Modeindicatorsareshowninthegrey
boxbelowtheweightamountdisplay.
7.MinusKey–Reducesthedisplayednumber.Pressthe
enterkeytostore.

8.PlusKey–Increasesthedisplayednumber.Pressthe
enterkeytostore.

9.Finemode–Displaystheweightamountsin1gram
incrementsorouncesintenthsofanounce.

10.STOPKey–Interruptsthebalancecycle.Stopsthe
wheel.

11.ALU‐SandSpokeMode‐ActivatestheALU‐Sor
SpokeMode.Eachtimethisbuttonispressed
programmingtogglesbetweenthetwo.

Snap‐onEEWB330AHandspinWheelBalancer
B.Installtheaccessorypins(Figure7).Tighten
firmly.
Figure7

C.Placeconesandotheraccessoriesontothe
accessorypins.

2.1ELECTRICINSTALLATION

ANYELECTRICALWIRINGMUSTBEPER‐FORMED
BYLICENSEDPERSONNEL.

ALLSERVICEMUSTBEPERFORMEDBYAN
AU‐THORIZEDSERVICETECHNICIAN.

Checkontheplateofthemachinethatthe
electricalspecificationsofthepowersourcearethe
sameasthemachine.Themachineuses115VAC,
50‐60Hz,1Ph,2.0Ampere.








NOTE:
Anyelectricaloutletinstallationmustbeverified
byalicensedelectricianbeforeconnectingthe
balancer.

NOTE:
Thismachineperformsaself‐testroutineonstart‐up.
Therewillbeadelayofseveralsecondsbeforethe 
displayisactivated.

CABINET‐Figure10
12.Display‐Easytoread,userfriendlydisplayfeaturing
largeLEDsandonebuttonfunctions.
13.WeightStorageTray‐Generousstorageforavariety
ofweightprofilesandsizesaswellasbuiltinstorage
pocketsforthestandardcenteringcones.
14.AccessoryStorage‐Foursturdysidemountedpegs
aresuppliedforstorageofadditionalaccessories.
15.Semi‐AutomaticParameterArm‐Rimdistance and
diameter automatic inputwiththeSAPE.TheSAPEisalso
used inseveralproceduresfordeterminingaccuraterim
profiles.
16.FootOperatedShaftLock‐Afootoperatedshaftlock
isusedtostabilizetheshaftduringtheweight
placementprocess.
17.ShaftAdapter‐Acommon40mmsizeshaftisused.
Theeasilyremovableshaftcanbereplacedforserviceor
duringuseofcertainwheeladapters.







ModelEEWB330AHandspin Wheel Balancer____________________________________________________
4.0OPERATIONOFTHEBALANCER
WARNING:Foroperatorsafety,pleasereadand
followtheprecautionsoutlinedonpages1and2of
thismanual.

NOTE:Readallinstructionsbeforeproceedingwith
operationofthebalancer.

Allbalancerfunctionsareinputintothemain
computerthroughthelargeeasytoreadtouchpanel.
Althougheachwheeltireassemblydifferinsomeways
allbal‐ancingjobsrequirebasicallythesame
procedure.Theorderofeventstotakeplaceare:

1.Inspectionofthewheel/tireassembly
2.Mountingwheelontoshaftoradapter
3.SelectionofBalancingModeandPreferences
4.Entryofwheelparameters
5.Spinningthewheel
6.Applyingtherecommendedweight
7.Checkspinifdesired
8.Dismountingthewheel

Thefollowingoperationinstructionswillfollowthe
basicoutlineabove.

4.1CHECKLIST‐INSPECTION
ObserveBeforeBalancingWheel

1.Checkforproperairpressure.Ifnotcorrect,inflate
tocorrectpressure.

2.Checkforanyforeignmaterialinsidetire.Ifpresent,
removebeforebalancingtire.


WATERISFOREIGNMATERIAL!
3.Removeoldweights—oldweightsmaybe
impropervalueorinwronglocation.

4.Besuretireandwheelarefreeofexcessivedirt,
rustandlargestones.Usewirebrushonbacksideof
wheelifnecessary.





4.2WHEELMOUNTING
Nearlyallstandardwheelsandmanyalloywheelshave
accuratelymachinedcenterholes,andtheyshouldbe
mountedwithcentercones.Accuratebalancing
dependsonaccuratemountingofthewheelandcorrect
seatingoftheconeinthepilothole.Insurethatthe
wheeliscenteredontheshaftexactlyasitwillbe
mountedtothevehicle.

Beforestartinganybalancingprocedureitisvery
importantthatthewheelismountedonthemachine
withtheproperadaptors.Anincorrectcenteringofthe
wheelwillresultinconsiderableimbalance.

TherearemanytypesofwheelsandSnap‐onsupplies
adaptorsofgoodqualityanddurabilityforthelarge
majority.Howeverifyoumeetspecialwheelswhichmay
requireaspecificadaptor,callyourSnap‐onfranchise.
Rimsmaybedividedintothesemajorgroups:

1.Carwheelswithatruecenterhole.
2.Carwheelswithoutacenterhole.
3.Carwheelswithanuntruecenterhole.
4.Lighttruckwheels.
5.Lugcentricwheels
6.Cladwheels

4.2.1StandardWheels(backconemount)
MountthewheelasdetailedbelowinFigure11:


1.Mountproperconeagainstspringplate.
2.Mountwheelonshaftinthesamemannerasyouwouldon
thecar.
3.Mountpressurecuponshaftandplaceagainstoutsideof
wheel,followwiththeQuick‐nut.
4.TightenQuick‐nutsecurelywithbothhands.Tooperatethe
Quick‐nutpullthelock‐unlocklever(Figure12).Slidethe
Quick‐nutonthethreadedshaft.Whenincontactwiththe
rim,releasetheunlockleverandtightenfirmly.Toassistin
centeringthewheelproperly,rotatethewheelontheshaft
whiletighteningthequicknut.



ModelEEWB330AHandspin Wheel Balancer______________________________________
________________
Figure12 

DONOTUSEAHAMMERTOTIGHTENTHEQUICK
NUT.
E,THEN
RESSTHEUNLOCKLEVERANDSLIDEAWAYFROM
.Checkthatthewheelrotatestruebyturningthe
yexcessive
nout.
verse‐offsetwheelsthat
thebalancermounting
ange.Theextensionadaptorisoftenusedwiththe

Installthespaceronthemountingflange,then
mountthewheel,usingthefrontconemethod
(Figure13)

Figure13


4.2.3 IRING
SPEC
Clad
that
finished.
chrom

 
Aclad heelmustbecenteredproperlyfromthe
k
tea
norm
taper
appro
is l it vr se t
r
e
long
more.
d
e
cosm
cone
below
indica
onaw
Sees
recom


TORELEASETHEQUICKNUT,UNSCREWA
FEWTURNSTOREDUCETHEAXIALPRESSUR 
P
THESHAFT.

bac
ins
5
wheelseveralrevolutionswhilenotingan
ru

4.2.2CENTERINGLIGHT‐TRUCKWHEELS

Anoptionaloffsetspacermayberequiredforsome
lighttruckwheelsandre
prec
tape
whee
whee
cent
mustbemovedawayfrom
fl
5‐1/4inchdiameterlighttruckcone.
(PartNumber–EEWB3‐5)
intru
whe
WHEELMOUNTINGREQU
IALTOOLING
wheels:ACladWheelisawheelcasting
isbalancedbutthewheelfaceisnot
Tofinishthewheelfaceaplastic
edfaceisbondedtothecasting.
w
sideofthewheelusingprecisioncollets
dofacenteringcone.Aprecisioncolletis
allyadualsidedcenteringdevicewithlow
soneachsideandhasalengthof
ximately1.5inches.Thebenefitofa
ionco letis  fitseryp eci lyintohe
edmachiningonthebacksideofacast
landthecolletdoesnotprotrudeintothe
lcenter.Aconealsooffersprecision
ring,butaconecanhavealengthfromthe
toshortendofthetaperoftwoinchesor
Ataperconeunlikeaprecisioncollet,will
eintothewheelcenter.Onmanyclad
lsthereareplastictabstoholdthe
eticcoverinplace.Aprecisioncentering
canbreakoffthetabs.Theillustration
(providedbyVibrationsSolutions)
teshowacladwheelshouldbecentered
heelbalancer.
ection1.6OptionalAccessoriesfortooling
mendations.



4.3MODESELECTIONUsethegaugearmtotouchtheinsiderimedge
position(B)forthetapeweightplacement.TheLED
willflashandtonewhenthevalueisstoredinm
emory.TheinnerLED(C)willflash.Continueto
extendthegaugearetothe(C)weightplacement
position.Whenthebalancertones,theposition is
accepted.Storethegaugearminthecomplete
homeposition.

Themajorityofbalancingtakesplaceinthedefault
2‐planedynamicmode.GreenLED’sAandE(See
figure15)Hammer‐onclipweightswillbeplacedon
bothinsideandoutsideoftherimedge.Ifrequired,
selectanoptionalweightplacementmodeby
pressingtheModebuttonuntiltheappropriate
placementmodeisdisplayed.
4.3.1WEIGHTPLACEMENTMODESDYNAMIC(twoplanes)‐Suggestedfor allsteel
rims.Inthiscasethewheelweightsmustbe
clippedontotherimedges.Thisfunctionis
selectedasadefaultandtheLEDscorrespondin
gtothewheelweightlocationareliton(Figure
16).
Beforespinningthewheel(althoughitmaybedone
afterwards)choosetheappropriatebalancingmode
forthewheel.Toselectthevariousplacement
modespressthe(9)WeightPlacementbuttonuntil
placementLEDsindicatedesiredplacement
position.


STATIC(singleplane)‐Suggestedfornarrowrims
(3"orless)oronlighttrucktireswithhigh
aspectratiotires.Useasinglecorrectiveweight
placedinthecenterofrimasillustratedin
Figure17.

Figure14
1.TAPEWEIGHTMODEUSINGEASYWEIGHT
Tousethegaugearmtoindicatetheouterandinner
tapeweightposition.PresstheWeightplacement
number9keyuntilYellowLED’sBandClight.Press
thenumber9keyonemoretimeandLED6will
flash. 
Figure15
WEIGHTCOMBINATIONMODESUSING
THEWEIGHTSELECTIONBUTTON
See(Figure14).Pressingtheweightselec
tionbutton(9)willtoggletheLED’stothe
weightdefaultselectionsasshown.Balancing
usingacombinationofhammer‐onand
adhesiveweightsasshown.


Snap‐onEEWB330AHandspinWheelBalancer

 
5.5.1SelectingtheAlutypes
Imagesshowsthecorrectedweightapplicationpositions
foradhesiveweightsandclip‐onweights.Note:The
Alu1PmodeisincludedintheEasyalufunction,butmust
berecalledafterthegaugehavebeenpositionedonthe
rim.
*Selectthemenukey(Fig.5‐12)torecalltherequired
ALUPweightpositions.
Fig.5‐13Givenweightpositionnormal.Normalweight
andclip‐onweightpositionsontherimflange‐this
modeispresentedimmediatelybytheEasyalufunction.

Alu1Adhesiveweightsappliedsymmetricallytotherim
flangeswithNOMINALweightpositioning.Functionnot
includedinEasyalumode.

Alu1PAdhesiveweightsappliedsymmetricallytothe
rimflanges;thecompensationplanesfortheadhesive
weightsarereadpreciselyusingtheinternaland
externalgaugearm.

Alu2Adhesiveweights‐Adhesiveweightonrimflange,
adhesiveweighthiddeninrimdiscwithNOMINAL
positioning.FunctionnotincludedinEasyalumode.

Alu2PAdhesiveweights‐Adhesiveweightonrim
flange,adhesiveweighthiddeninrimdisc;the
compensationplanesfortheadhesiveweightsareread
preciselyusinginternalcalibration.

Alu3Clip‐onweightonleftrimflange,adhesiveweight
hiddeninrimdisc.FunctionnotincludedinEasyalu
mode.WeightpositioningisNOMINAL.

Alu3PClip‐onweightonleftrimflange,adhesiveweight
hiddeninrimdisc;thecompensationplanesforthe
adhesiveweightisreadpreciselyusinginternal
calibration.

Alu4Balanceclipfittedonleftrimflange,adhesive
weightattachedtorightbeadseat

Snap‐onEEWB330AHandspinWheelBalancer
5.6Dimensionaldetections

Thedimensionsofthebalanceweightsaredetected,on
thebasisofrealdata,orratheronmeasurementstaken
directlybytheGaugesiftheautomaticEasyAlufunction
isused.Ifthedataisenteredmanuallythesefiguresare
calculatedonthebasisofnominalvaluesbyaddingor
subtractingtheaveragecorrectionvalues.

5.6.1CalibrationGauge

TheinternalCalibrationGaugefordistanceand
diameterisusedtoenterthedistancebetweenthe
machineandtheleftcorrectionplane,aswellasthe
nominalrimdiameter/correctiondiameter.Theinternal
CalibrationGaugeallowstheeffectivecorrectionplanes
anddiametersoftheadhesiveweightsfixedtothebead
seatsandhiddenweightstobecalculatedexactly.

Fig.5‐14InternalCalibrationGaugeforrimdistanceand
diameter.
1InternalCalibrationwithgaugehead 2Gaugehead3
ReferenceedgefordistancereadingX–Usingthe
distanceanddiametermeasurementInternalGauge(1,
Figure5‐14)thedistancebetweenthemachineandthe
leftcorrectionplaneisdetectedandobtained
automaticallyaswellasthediameteroftherim.

Application:ExtractandresttheGaugeHeadontherim
andkeepitinpositionuntilanaudiblesignalisheard.

MovetheGaugetotheidleposition.Whenthe
measurementshavebeencompletedandtheidle
positionisreached,therimdimensionsareshownon
theDisplay.Aselectionofweightpositions(Alutype)is
alsoshown.IftheGaugedoesn’tfunctioncorrectlyorif
thecorrectionpositionsonthewheelonthemachine
areoutsidethecalibrationreadingfield,itisstill
possibletosetthedimensionsfromthemenuand
proceedinmanualmode.

Snap‐onEEWB330AHandspinWheelBalancer
5.6.2GaugeheadapplicationonvariousWheeltypesIn
ordertobeabletodetermineunbalanceinasingle
measuringrun,therimdimensionshavetobeentered
correctly.Thereforeproceedwithutmostcareandasis
shownintheFigureswhenapplyingthegaugeheadon
theriminthedesiredweightfittingposition.Incorrect
applicationwillresultindeviationsofmeasuredvalues
andconsequentlyinaccurateresultsofthemeasuring
run.Fig.5‐15ato5‐15fshowcorrectapplication(with
andwithoutadhesiveweight)ofthegaugeheadon
variousrimsandforvariousweightfittingpositions.

Fig.5‐15aStandardwheel–Steelrim1Gaugehead 2
Rim

Fig.5‐15bStandardwheel–Alloyrim

Fig.5‐15cLight‐truckwheel–Steelrim

Fig.5‐15dLight‐truckwheel–15°tapersteelrim

Fig.5‐15eAlloywheel‐Rimwithoutahousingforclip‐
onweights

Fig.5‐15fAlloywheel–AdhesiveweightsALU
1Leftcorrectionplane,firstapplicationposition
2Rightcorrectionplane,secondapplication
position.



Snap‐onEEWB330AHandspinWheelBalancer
5.6.3MANUALDataEntry
Manualdataentryisrequiredincaseofgaugearm
malfunctions.Proceedasfollows:

5.6.3.1ManualenteringoftherimWidth.Rimwidthcan
beenteredviathemenukeys,inthiscasetherim
diameterhastobedeterminedmanually.Ifrimwidthis
notgivenontherim,itcanbemeasuredonstandard
rimsusingtheoptionalRimWidthCaliper(Fig.5‐16).
AccessthefunctionENTERINGRIMWIDTHselectingthe
keyW(Fig.5‐17).Pressthekey‐or+(1,2,Fig.5‐17)until
therequiredvalueisreached.
5.6.3.2ManualenteringoftheOffset.Positionthe
gaugearmcorrectly(1,Fig.5‐18).AccesstheENTERING
RIMOFSETselectingthekeyO(Fig.5‐17).Readthearm
extractthevalueonthegaugingrod.
Enterthevaluereadpreviouslyusingtheappropriate
keys‐or+(1,2,Fig.5‐17).

5.6.3.3ManualenteringoftherimDiameter.Readthe
nominalrimdiameterdirectlyontherimortireitself.
SelecttheDIAMETER;keyDonthecontrolpanel
(Fig.5‐17).Enterthevaluereadpreviouslyusingthe
appropriatekeys‐or+(1,2,Fig.5‐17).
Selectanothermeasurementtoedit(ifnecessary)
orspinthewheel.

Snap‐onEEWB330AHandspinWheelBalancer
5.7EasyAlufunction
TheEasyAlufunctionautomaticallyrecognizestheAlu
requiredbytheoperatorandtherimdimension
parameters,oncethegaugehasbeenpositionedonthe
rim.ThemachinepresentsonlythepossibleAlusin
relationtothecontactpointsselectedbytheoperator.

Note:Alu4andAlu 5arenotincludedintheEasyAlu
function.Theyrequiremanualsettingbytheoperator.
AtthispointyoucanchangetheAlumodesuggestedby
themachine,usingthe“EasyAluToggle”function(Fig.
5‐19).

5.7.1Automaticrimdimensionreadingandsettingand
AluMode

Preparations:‐Compensationruncarriedout,if
necessary(C47.1.1).Wheelcorrectlyclamped
(5.1).Important:Calculationandrecommendationfor
optimization,aswellastheoptimizationprocedure
itself,willonlybeaccurateiftherimwidthhasbeen
correctlyentered.Automaticrimdistanceanddiameter
readingwithaninternalgaugearm.Movetheinternal
gaugearmgaugeintopositionontherimtoselectthe
initialweightapplicationposition(internalrimside).
Keepitinthispositionuntilanaudiblesignalisheard.
ForAlu2PandAlu3P(Fig.5‐20):Positionandholdthe
internalgaugeinthesecondpositionontherimto
selecttheapplicationpositionontherightsideofthe
rim.

Shortlyafterwardsthemachineemitsanaudiblesignal
toindicatethatthemachineautomaticallysavesthe
weightapplicationcoordinates.
Movethegaugetotheidleposition.

ForAlu2PandAlu3Pyoucanproceedwithameasuring
run.



Snap‐onEEWB330AHandspinWheelBalancer
5.8BalancingPreliminaryoperations:–

Ifnecessary,performacompensationrun(C47.1.1).–
Checkthewheelisclampedcorrectly(5.1).–Readthe
rimdimensionparameters(5.6). Ifmorethanonewheel
ofthesametypeneedstobebalanced(thesame
nominaldimensions)thedataneedonlybesetforthe
firstwheel.Theselectionsstaysetuntilothernewdata
issetorthemachineisswitchedoff.

5.8.1Measuringimbalance

Havingcompletedthepreliminaryoperations,a
Measuringruncanbelaunched:Wheelmeasuringrun
PROFILINGmode.

Aftermeasurementthebalanceweightscanbefitted,or
aweightminimizationoroptimizationrun(5.11)canbe
carriedout.

Aftermeasurementthemachinestopsautomatically
andthewheelisbraked.Thescreenshowsthe
unbalancemeasuredforeachcorrectionplaneandthe
directiontowardscorrection.


Snap‐onEEWB330AHandspinWheelBalancer
5.9Weightapplication

Thefollowingweighttypesandapplicationmethodsare
available:‐clip‐onweights:Alwaysapplybyhand(Fig.5‐
17).‐stick‐onweights:Mustbeappliedbyhand(Fig.5‐
18),orusingthegaugehead,fortheAlu2P,Alu3Por
easyweightmode.

Note:Handappliedweightsmustbeappliedexactly
perpendiculartotheshaft(12o’clockposition).After
spinningthewheellookattherotationindicatorsforthe
leftplaneofthewheel(1,Fig.5‐19):Asthecorrect
wheelanglepositiongetscloserafurtherindicatorlights
up.WhenalltheindicatorsareON(2,Fig.5‐20),the
WAPindicatorwillalsolightup(3‐Figura5‐20). Note:
Whenthecorrectangleisreachedalltherotation
indicatorsshouldbeON.Ifthewheelhasbeenpushed
toofar,onlytheindicatorsoftheotherhalfwillcome
ON(Figure5‐21).Ifthishappens,thewheelmustbe
delicatelyturnedintheoppositedirectionuntiltheWAP
positionisreached.Theweighttobeappliedinthat
planeisshownonthedisplay.

Attachingaclip‐onweight.

RefertoFigure5‐17.Clip‐onweightsmustalwaysbe
appliedinthe12o’clockposition.Thelipshouldreston
therimedge.Usetheweightplierstopositionit.In
STATICmodeonlythelefthanddisplayisused.

Attachingastick‐onweight.

ALUorSTATICweightmodesonly:RefertoFigure5‐18.
Applytheweightontheriminthe12o’clockposition,
alwaysbyhand.

Note:WithSTATICweightmodes,alwaysapplythe
weightattherimcentreline.Ifnotpossible,splitthe
weightsevenlyandapplyonanothersurfaceoftherim
(symmetricaltotherimcentreline).