Snap-On EEWB330A Operating Instructions Manual

Brand: Snap-On

Model: EEWB330A

Category: Measuring, testing & control

Type: Operating Instructions 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 EEWB330A Wheel Balancer

The Model EEWB330A Wheel 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, as well as the skill of the individual doing the work. Because of the vast number of

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 EEWB330A Wheel Balancer, the operator

has a thorough understanding of the wheels and tires being serviced. In addition, it is

assumed he has a thorough knowledge of the operation and safety features of the rack,

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 EEWB330A Wheel 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. Do not operate equipment with a damaged power cord or if the equipment has been

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

may overheat. Care should be taken to arrange the cord so that it will not be tripped

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. Keep hair, loose fitting clothing, fingers and all parts of the body away from moving

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 EEWB330A handspin wheel balancer. This wheel balancer is de-

signed for ease of operation, accuracy, reliability and speed. With a minimum of maintenance and care

your wheel balancer will provide many years of trouble-free operation.

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

The Snap-on wheel balancer model EEWB330A is intended to be used as equipment to balance car, and

light truck wheels within the following range:

Maximum wheel diameter : 42” (1067mm)

Maximum wheel width : 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Ti

me.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W

eight,unit/pallet/carton210lbs/99kg

Shippi

ngDimensions48”h40”w28”d

MachineDimensions40”h38”w21”d

ActualWeightwithAccess

ories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‐Acces sory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balance

r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 EEW B330A 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ac

curate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‐INSPECTIO N

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US

EAHAMMERTOTIGHTENTHEQUICK

UT.

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 v r se t

long

more.

cosm

cone

below

indica

onaw

See s

recom



TO RELEASE THE QUICK NUT, UNSCREW A

FEWTURNSTOREDUCETHEAXIALPRESSUR



THESHAFT.



bac

ins

wheelseveralrevolutionswhilenotingan



4.2.2CENTERINGLIGHT‐TRUCKWHEELS



Anoptionaloffsetspacermay be requiredforsome

light truck wheels and re

prec

tape

whee

cent

must be moved away from

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

1 Left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an

d

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oper ations:– 



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un

tilothernewdata

issetorthemachineissw

itched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).

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Snap-On EEWB330A Operating Instructions Manual

Brand: Snap-On

Model: EEWB330A

Category: Measuring, testing & control

Type: Operating Instructions Manual

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Snap-On EEWB330A Operating Instructions Manual

Snap-On EEWB330A Operating Instructions Manual

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