Snap-On EEWB308B User manual

EEWB308B
COMPUTER WHEEL BALANCER
FOR:
MOTORCYCLE WHEELS
OPERATIONINSTRUCTIONS
Form ZEEWB308B
®®
®®
®

For your safety, read this manual thoroughly
before operating the Model EEWB308B Wheel Balancer
The Model EEWB308B WheelBalancer isintendedforuse by properlytrained automo-
tive 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 asthe skill of the individualdoing the work. Becauseof 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 EEWB308B Wheel Balancer, the operator
has a thorough understanding of the wheels and tires being serviced. In addition, it is
assumedhe has athorough knowledge of theoperation and safetyfeatures of therack,
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 EEWB308B 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

Page2
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. Use only as described in this manual. Use only manufacturer’s recommended
attachments.
12. Always securely tighten the wing nut before spinning the shaft.
13. ALWAYS WEAR SAFETY GLASSES. Everyday eyeglasses only have impact
resistant lenses, they are NOT safety glasses.
14. Balancer is for indoor use only.
SAVE THESE INSTRUCTIONS

Page3
ModelEEWB308B OperatorsManual
TABLE OF CONTENTS
SAFETYINFORMATION .................................................................................................... 1-2
1.0INTRODUCTION ............................................................................................................. 4
1.1SAFETY NOTICE............................................................................................................ 4
1.2BALANCERAPPLICATION ............................................................................................ 4
1.3EEWB308BSPECIFICATIONS ...................................................................................... 5
1.4 FEATURES..................................................................................................................... 5
1.5 STANDARDACCESSORIES ......................................................................................... 6
2.0DIMENSIONS OFTHEMACHINE................................................................................... 7
2.1REQUIRED INSTALLATIONAREA.................................................................................. 7
2.2INSTALLATIONINSTRUCTIONS ..................................................................................... 7
2.3FLANGEADAPTERINSTALLATION............................................................................... 8
2.4ARBORINSTALLATION .................................................................................................. 8
2.5ELECTRIC INSTALLATION ............................................................................................. 8
3.0TERMINOLOGY .............................................................................................................. 9
4.0OPERATIONOFTHE BALANCER ............................................................................... 10
4.1 CHECKLIST- INSPECTION........................................................................................ 10
4.2 WHEELMOUNTING..................................................................................................... 10
4.3MODESELECTIONS ................................................................................................... 11
4.4SELECTINGOPERATORPREFERENCES ................................................................. 12
4.4.1FINEBALANCINGMODE.......................................................................................... 12
4.4.2OUNCE/GRAMS CONVERSION ............................................................................... 12
4.4.3RIMDIAMETERINMILLIMETERS ............................................................................. 12
4.5ENTERRIM PARAMETERS ......................................................................................... 12
4.6 CORRECTIONOF THEIMBALANCE ........................................................................... 13
4.7VERIFICATIONOFTHE RESULTS ............................................................................... 13
4.8 VIBRATIONPROBLEMS.............................................................................................. 13
5.0 CALIBRATION VERIFICATION- P14........................................................................... 14
6.0RIMOFFSETGAUGECALIBRATION- P80.................................................................. 15
7.0EXPLANATIONOF PROGRAM CODES ...................................................................... 16
8.0MAINTENANCE............................................................................................................ 16
9.0TROUBLESHOOTING.................................................................................................. 16

Page4
1.0 INTRODUCTION
Congratulations on purchasing the EEWB308B computer wheel balancer. This wheel balancer is de-
signed for ease of operation, accuracy, reliability and speed. With a minimum of maintenance and care
yourwheel balancerwill providemany yearsof trouble-freeoperation.
Instructionsonuse,maintenance andoperationalrequirementsofthemachinearecoveredin thismanual.
STORETHIS MANUAL INA SAFEPLACE FOR FUTUREREFERENCE.
READTHIS MANUALTHOROUGHLYBEFOREUSING 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
concerningsafety andmaintenance.
1.2 BALANCER APPLICATION
TheSnap-onwheelbalancermodel EEWB308B isintendedtobeused asequipmenttobalancecar, and
lighttruck wheels withinthe followingrange:
Maximumwheeldiameter : 44” (1117mm)
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.

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ModelEEWB308B OperatorsManual
1.3 EEWB308B SPECIFICATIONS
Computerizeddigitalwheel balancer forcar, light truck
wheels.
WeightImbalanceAccuracy .10 oz / 2 grams
WeightPlacement Resolution ± .7degrees
WeightImbalance Resolution:
RoundoffMode .25 oz / 5 grams
Non-RoundoffMode .05 oz / 1 gram
Max. Shaft Weight Capacity 120 lbs / 54 kg
Max.TireDiameter 44" / 1118 mm
Rim Width Capacity 1"-20" / 25 mm - 508 mm
Rim DiameterCapacity 6"-30" / 152 mm-762 mm
BalancingCycle Time. 15 seconds or less
ShaftSpeed atcalculation 119 RPM
Electrical 115 1ph, 50-60Hz, 2A
RequiredWorkArea 60"w x 48"d 1524 x 1219 mm
ShippingWeight, unit/pallet/carton 230lbs/77kg
ShippingDimensions 48”h40”w 28”d
MachineDimensions 40”h38”w 21”d
Actual Weight with Accessories 174 lbs / 79 kg
OperatingTemperature Range 32-122F/0-50C
1.4 FEATURES
ACCURACY
• Weight placement accuracy is ± .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
• Automaticdistanceentry.Simply touchtheSAPEarm
tothe wheel, thedistanceparameter is automatically
entered.
• Quick cycle time.
• Automatic recalculation if weight positions are
changed. No need for re-spinning the wheel.
• Weight pocket storage tray.
• Easy-to-Read Data display.
• Easy weight tray access.
SOFTWARE VERSATILITY
• Both dual weight Dynamic and single weight Static
capability.
• Built-inspin counterformonitoring balancer
productivity.
• Service code access to all Balancer electronic func-
tions for fast, easy diagnosis.
• Operator selectable roundoff mode.
• Ounce/ Gram togglefrom frontpanel
• Multiple operator feature allows several operators to
recallwheel parameters.

Page6
1.5 STANDARD ACCESSORIES
EAK0221J13A Adapter Kit - Figure1
Ref Part Number Qty Description
1 1412 1 Spring Conical, MC
2EAK0221J15A 1 Adapter Kit - M/C (see below)
3 3607-01 1 Spring - Conical
4 3609-01 1 Spacer - M/C Shaft
5 7607 1 Spin/Hand Crank Handle
6 EAM0006G16A 1 Bolt - Crank Handle (not
shown)
7 8430-02 1 Caliper Accessory - M/C
8 EAA0255J43A 1 Flange Accessory
9 EAM0005D62A 1 Gauge Extension
EAK0221J15A Adapter Kit - Figure2
10 1387 2 Cone - M/C
11 1388 1 Nut Ring - M/C
12 1389-01 2 Disc - Pressure
13 1389-02 1 Disc - Pressure
14 EAM0003J33A 1 Shaft Accessory - 14mm
15 1401 1 Spring -Adapter M/C
Additional Accessories - Figure3
16 7-14201A 1 AC PowerAdapter
17 EAM0006G01A 4 Pin - Accessory
Figure 3
Figure 1
Figure 2 - 1419 Kit
13
45
7
8
9
10 11
12 13
14 15
17
16
10
EAM0003J35A

Page7
ModelEEWB308B OperatorsManual
PRE-INSTALLATION CONSIDERATIONS
2.0 DIMENSIONS OF THE MACHINE
Figure 4 - Actual Footprint Dimensions.
2.1 REQUIRED INSTALLATION AREA
Makesure thatfromthe operatingposition theusercan
seeall of themachine and thesurrounding area.
Theoperatorshouldpreventnonauthorizedpersonsand/
or objects from entering the area which may create po-
tentialhazards.
The machine should be installed on a stable level floor.
Donot installthe machine ona 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.
Installthe machine ina dry, covered area.
Theinstallation of themachinerequires aworkingarea
of at least 60” x 48” (1524 x 1219 mm) (Figure 5).
2.2 INSTALLATION INSTRUCTIONS
CAUTION! CAREFULLY REMOVE THE BALANCER
FROM THE PALLET.
Remove the hardware that secures the machine to
thepallet andslidethebalanceronto thefloor 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 IN-
JURYOREQUIPMENT DAMAGE.
A. Remove the hardware that secures the machine to
thepallet andslidethebalanceronto thefloor whereitis
to be installed.
b. Locatehandcrank handleandassociated screw-nut
and mount hand crank to the left side of the mounting
shaft as shown in Figure 6. NOTE: The crank screw
usesa left handthread. Donotover-tighten. Makesure
threads and mating surface is clean prior to assembly.
Referto Figure 6for detail.
Figure 6
Figure 5 - Recommended Work Area

Page8
2.3 FLANGE ADAPTER INSTALLATION
Mountthe flangeadapter plateonto theshaft backplate
using supplied nuts and washers. Do not over tighten.
Referto Figure7.
2.4 ARBOR INSTALLATION
IMPORTANT!
CHECK THAT THE SURFACES ARE PERFECTLY
CLEAN AND NOT DAMAGED. AN INCORRECT
MOUNTING MAY RESULT IN SIGNIFICANT IMBAL-
ANCE.
Mountthe threadedshaftonto thearbor ofthe balancer.
Tighten firmly, butdonotexceed70 inchlbs. SeeFigure
7.
Figure 7
2.5 DISTANCE GAUGE EXTENSION
Mount the Distance gauge extension to the Distance
Gauge arm. See Item 9 on page six for photo of the
gaugearm extension.
2.5 ELECTRIC INSTALLATION
ANY ELECTRICAL WIRING MUST BE PER-
FORMEDBYLICENSEDPERSONNEL.
ALLSERVICEMUSTBEPERFORMED BYANAU-
THORIZEDSERVICETECHNICIAN.
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,
2.0Ampere. Plug theAC poweradapterinto tehrecep-
tacle on the rear of the machine. See Figure 8
NOTE:
Any electrical outlet installation must be verified by a
licensedelectrician beforeconnectingthe balancer.
Checkthatthe outlet has anautomaticground fault cir-
cuit breaker with a differential circuit set at 30 mA.
NOTE:
This machine performs a self-test routine on start-
up. There will be a delay of several seconds be-
fore the display is activated.
Figure 8
Rear

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ModelEEWB308B OperatorsManual
3.0 TERMINOLOGY
Figure 9
Beforeusing thewheel balanceritissuggestedthat you
becomefamiliarwiththeterminology andfeaturesofthe
machine’s components. Refer to Figures 9 and 10 for
identificationand location.
DISPLAY - Figure 9
1. Parameters - Rim Offset- Keyisused toenter the
rimoffset positionusing numbers fromthe distance
gauge. Rim Diameter - Enter the rim diameter.
Readthesize statedonthe tiresidewall.RimWidth
- Press this key to enter the rim width. Use the rim
widthcalipers formeasurement.
2. InsideWeightAmountand Function Display Win-
dow -Showsinside or leftweight amount andvari-
ousoperation messages.
3. Position Indicator LEDs - Displaysthe locationfor
wheelweight placement.
4. MiddleDisplay -Usedto displaywheelparameters
ormessages.
5. Outside Weight Amount and Function Display
Window Showsoutside orright weightamount and
variousoperationmessages.
6. FunctionButton - Used toactivate thevariousfunc-
tions. Press this button followed by rotating the
shaftuntil thedesired numberis displayed.Releas-
ing the “P” button actives the function.
7. Cancel - Pressing this key interrupts any process.
8. Mode Selection -Aseries of placement locations
forcustom weightlocation. Useful forthe widevari-
ety of custom wheels on today's market.
9. ALU-S and Spoke Mode -Activates theALU-S or
Spoke Mode. Each time this button is pressed pro-
grammingtoggles betweenthetwo.
10. Weight Mode and Placement Display - Displays
apictorial reference ofthe chosenbalancemode.
11. Multi-Operator Selection - This key toggles be-
tween four operators designated as a, b, c, and d.
Wheelparameters arerecalled uponcommand.
12. Fine Weight Toggle - In normal mode “FIN OFF”
roundoff is0.25oz or5 gram,fine mode “FIN ON”
round off is 0.05 oz. or 1 gram.
13. Oz/Gr - Togglesbetween displayvaluesin Ounces
orGrams.
CABINET - Figure 10
14. Display - Easyto read,user friendly displayfeatur-
inglarge LEDs andone button functions.
15. Weight Storage Tray -Generous storagefor avari-
ety of weight profiles and sizes as well as built in
storagepockets for thestandardcentering cones.
16. AccessoryStorage-Foursturdysidemountedpegs
aresupplied for storageof additionalaccessories.
17. Foot Operated Shaft Lock -Afoot operated shaft
lock is used to stabilize the shaft during the weight
placementprocess.
18. Shaft Adapter - Flange and 14mm shaft made for
balancingMotor Cycle wheels.
19. Semi-Automatic Parameter Arm - Rim distance
is automatically input with the SAPE. The SAPE is
alsoused inseveral proceduresfor determiningac-
curaterim profiles.
Figure 10

Page10
4.0 OPERATION OF THE BALANCER
WARNING: Foroperator safety please read
and follow the precautions outlined on
pages 1 and 2 of this manual.
NOTE: Read all instructions before pro-
ceeding with operation of the balancer.
All balancer functions are input into the main computer
through the large easy to read touch panel. Although
eachwheeltireassemblydiffer insome waysallbalanc-
ing jobs require basically the same procedure. The or-
der of events to take place are:
1. Inspection of the wheel/tire assembly
2. Selection of proper cones or mount
3. Mountingwheel onto shaftoradapter
4. Selection of Balancing Mode or placement
5. Entry of wheel parameters
6. Spinning the wheel
7. Applyingthe recommended weight
8. Check spin if desired
9. Dismounting the wheel
Thefollowing operationinstructions will followthe basic
outlineabove.
4.1 CHECK LIST - INSPECTION
Observe Before Balancing Wheel
1.Checkforproperairpressure. Ifnotcorrect,inflateto
correctpressure.
2. Check for any foreign material inside tire. If present,
removebeforebalancingtire.
WATER IS FOREIGN MATERIAL!
3.Removeold weights—old weightsmaybe improper
valueorinwronglocation.
4.Besure tire andwheel are freeof excessive dirt, rust
andlargestones.
5.Besurethattherightsizetirehasbeenmountedonthe
wheel.
4.2 WHEEL MOUNTING
4.2.1 Standard MC Wheels
Performan P4adapter calibration:
A. MountAdapter to becompensated.
B. Press and hold P, while turning Diameter/Function
knob until 4is displayed, when the P button is re-
leased,the function willactivate.
C. When P4 activates, display reads:
“CAL ADP”-for1 second, followedby: “SPN 1“
D. Hand spin the shaft using the left side hand crank.
The display reads “CAL 1 ” while the machine is
doingcalculations. Do notdisturb themachinedur-
ing calculations. Do not tap on or touch the ma-
chine. After calculations, shaft is stopped and dis-
plays: “CAL ADP FIN” for one second. Continue
withmotorcycle wheelmounting andbalancingpro-
cedures.
WARNING:
Before performing balancing procedures, inspect the
wheel and tire for proper size match. Inspect tire car-
cass for imperfections, signs of damage, tire plugs,
cracksoranyotherimperfection thatcouldcreate ahaz-
ardin ahigh performanceapplication.
WARNING:
Always wear proper safety glasses when using a tire
balancer.Removeany looseweightsbeforeproceeding.
Spinning wheel assemblies could cause loose weights
todislodgeandstriketheoperator.Donot allowbystand-
ersnear the machinewhen inoperation.
1. Slideacompression springandcentering coneonto
thespindle.
2. Selectaddidtionalpressurediscsifrequired,andslide
themoverthespindle,coneandcompressionspring.
When using the laminated pressure disc, always
facethelaminated side towardthe wheel. SeeFig-
ure11.
3. Place the Motorcycle wheel over the spindle, with
the brake rotor or closed side of drum facing the
pressuredisc.
Figure 11

Page11
ModelEEWB308B OperatorsManual
4. Slide the other cone onto the spindle.
5. Make sure the wheel is centered on both cones.
Moderatelytightentheringnutwithonlyenoughpres-
sure to prevent the wheel from slipping when the
brake is applied. To avoid excessive wear on the
pressuredisc, do notovertightenthe ring nut.
NOTE: Whenpowered on,themachinedefaultsto
the motorcycle wheel balancing (MCWB) mode. In
theeventthemodehas beenchanged,enter P20to
activatethe MCWBmode. If P4adapter calibration
has not been performed first, the machine will not
enter the MCWB mode and display “do P4” to re-
mindthe operator toperformP4 first.
Figure12
6. To perform a “P4” compensation, first mount the
Flange assembly to the shaft as shown in Figure
12. Enter “P4”and pressEnter. Then spinthe shaft
until a tone is heard. A second tone will sound as
theshaft brakestoa stop.The adapteris now com-
pensated.See Figure 12.
7. UseSAPE toenter the distancevalue. Or enterthe
valuesmanuallyusing thedistancegaugescale and
by rotating the shaft to enter the desired value.
NOTE:Thedisplay valuematchesthevalue readon
thegaugerod,however,theactualvalueenteredadds
100 mm to the calculation. See Figure 13.
Figure13
8. Useleftand rightknobsto enterthewidthanddiam-
etervalues.
9. Spin shaft and wheel assembly with the left crank
handle up to speed until the tone alert sounds.
NOTE: Disregardanypressure discrunoutthatmay
occur. The pressure discs are made of lightweight
materialandwill not affectbalancing accuracy.
10. Allow the wheel to spin freely until a second tone is
heard. After calculations, the automatic brake will
stopthe wheel. NOTE: Donot leanonthe balancer
while the wheel is spinning, doing so can cause in-
accuratereadings.
NOTE: Donot usethefoot operatedshaft lockas a
brake,it isintended tobe usedonlyto preventshaft
rotationwhile placingcorrective weights.
11. After the wheel stops, slowly rotate the wheel by
handuntilcenterposition LEDlights. Holdthewheel
in this position using the foot brake.
12. Notethedisplayedimbalance,andplacethisamount
ofweightat top deadcenter.
4.3 MODE SELECTIONS
NOTE: Whilemost “Aluminum”modes areused prima-
rily for automotive applications some can be utilized on
wide or “Fat” wheels used on today’s custom motor-
cycles.
Static unbalance
With purely static imbalance the center of gravity and
thus the principal axis of inertia of the wheel is not on
the axis of rotation. Due to the unbalanced mass the
wheel has a heavy and light side related to the axis of
rotation. Static imbalance is compensated for by fitting
counterbalance weights to the light side of the wheel,
either in the center or on the sides of the rim.
Dynamic unbalance
With purely dynamic imbalance the center of gravity of
thewheel ison theaxis ofrotation,but theprincipal axis
of inertia is inclined relative to the axis of rotation. The
unbalancedmassesarediagonallyopposedtoeachother
and of equal size. To compensate for dynamic imbal-
ance each side of the wheel is considered separately
andthe imbalancesarecompensated forseparately on
each side of the wheel.

Page12
Dynamic imbalance is not significant for narrow motor-
cyclewheels upto anominal widthor weightseparation
of3inches or less.For these wheelsstatic balancing is
sufficient. The majority of MC balancing takes place in
the default static mode which is displayed as "STA".
Bullet, clip or stick-on weights will be placed on the
center of the rim.
Ifrequired,selectanoptionalweightplacementmodeby
pressingtheModebuttonuntiltheappropriateplacement
mode is displayed.
4.4 SELECTING OPERATOR PREFERENCES
4.4.1FINE BALANCING MODE
This balancer measures with the maximum precision
availableallthe time,1g/0.05 oz,howevervalues below
5g/ 0.25oz areshown aszero whilein thenormal oper-
atingmode. Valuesexceeding 5g/0.25oz arerounded
totheamount of the nearestcommercial wheel weight.
Press the NORMAL/FINE button to toggle the display
resolution between 5g / 0.25 oz and 1g / 0.05 oz.
4.4.2OUNCE/GRAMSCONVERSION
When the machine is first turned on it is preset to dis-
play the imbalance in ounces.
Press the OUNCE/GRAM button to toggle the display
betweenweight in ouncesand grams
4.4.3 RIM DIAMETER IN MILLIMETERS
The rim diameter is normally displayed in inches, how-
everif thevalue inmillimeters isdesired, pressandhold
the P button while rotating the shaft until “P 7” is dis-
played”.
Repeatthe above operationto convertback to inches.
Example: “dIA ICH” = inches
“dIA ---” = millimeters
4.4.4OPERATORSELECTION
Selectthe desiredoperator designatedA,B,C,orD. The
Balancercan storewheel parametersoffour operators.
TheOperator buttontogglesbetween thefour operators
witheach depression.
4.5ENTER RIM PARAMETERS
4.5.1 Distance (rim offset) -Movethe rimoffset gauge
arm to the edge of the rim, touch the pointer to the rim
edge (where a clip weight would be appied) and hold
steady for about a second. The beeper will sound and
the distance values will be entered automatically. Re-
turn the arm to its fully in and down position on the bal-
ancer. Do not allow the measurement arm to "dangle"
downin frontofthe balancer.
ManualDistanceEntry-Intheeventofautomaticgauge
failure,thedistancevaluecanbeinputmanually. Move
the distance gauge arm to touch the inner edge of the
wheel where weights are to be placed and observe the
reading on the scale of the distance gauge. Press
manualwheel distance button whilerotatingthe
shaft until value is displayed in the left display window.
NOTE: Forprecisionbalancingofperformancewheels,
an“ALU-S”Modeisavailableforprecisiondetermination
of wheel parameters. This feature allows exacting
placementofcorrectiveweightsaswell.
4.5.2. Measure rim width using rim width calipers.
Measurewheelwherecorrectiveclip-onweightwouldbe
applied. Enterthemeasuredwidthbyrotatingtheshaft
untilthedesired value appearsinthe left display.
4.5.3. Rim Diameter - Read the rim diameter marked
on the sidewall of the tire. Enter the measured rim di-
ameter by rotating the shaft until the desired value ap-
pears in the right display.

Page13
ModelEEWB308B OperatorsManual
4.6 CORRECTION OF THE IMBALANCE
NOTE: Beforespinningthewheelmake surepropereye
protection is worn by all personnel in the vicinity of the
balancer.
A. Use left hand crank handle to spin the wheel up to
speed. A tone will sound when sufficient speed is at-
tained. When the balancing cycle is completed the
wheel will stop automatically and the imbalance values
will appear on the LED’s.
NOTE: Do not use the foot operated shaft lock as a
brake, it is intended to be used only to prevent shaft
rotationwhile placingcorrective weights.
B. Read the imbalance value on the outer display. Val-
ues are displayed in ounces but can be displayed in
grams if required and are automatically rounded to the
nearestcommercial wheelweight.
Turn the wheel until the displays of the outer plane im-
balancepositionindicator are illuminated green. Apply
thewheel weightat twelveo’clock position.Use thefoot
operatedshaftlock to prevent shaftrotation while plac-
ingweights.
C.Correct theimbalance ontheinnerplaneinthesame
manner.
4.7 VERIFICATION OF THE RESULTS
Spin the wheel again and check that the readout is
“0.00” “0.00” If a residual imbalance is displayed:
A. Check the rim parameters, if entered value is incor-
rect, correct as needed. Imbalance values will be re-
computedafter re-spinningwheel.
B. Check if the balancing mode selected is the most
appropriate.If not, choosethe right modeand respin.
C.Thewheelweightcould havebeen placedat awrong
position.Tocheck this,position thewheelat thecorrec-
tionposition fortheouter plane.If thewheel weight pre-
viouslyattached isin sector ‘L’or ‘R’( Figure14), move
thewheelweight up about 1” (2.54cm).
If the wheel weight is in sector ‘D’ cut a piece of the
wheelweight ofan approximatevaluecorresponding to
thevalueshownon therightdisplay,orreplacethewheel
weightwitha lighter one.
Ifthewheel weight is insector‘U’ add aweightof value
indicated by the display or replace the wheel weight
with a heavier one. Repeat the same operation for the
innerplane.
NOTE: If this situation is repeated, your machine may
beout ofcalibrationand acalibration operationmightbe
requiredas instructed onpage 14.
D.Ifan ALUfunctionwas selectedensurethat thewheel
weightshavebeenplacedin accordancetothe program
chosen.
E. Checkthat the quicknutis tightandthat thewheelis
not slipping against the backing collar.
F. Check that the wheel and adaptors are clean.
Figure14
4.8 VIBRATION PROBLEMS
If vibration is still present after balancing, check the fol-
lowingpossible sourcesof vibration:
1. Stones caught in the tire tread.
2. Tire slippage on the wheel.
3. Incorrectly mounted wheel.
4. Imbalanced wheel covers.
5. Excessive radial or lateral runout in the tire or
wheel.
6. Damaged wheel bolt holes.
7. Worn universal joints.
8.Imbalanced brake rotorsor drums.
9.Worn or damagedbalancer accessories.

Page14
5.0 CALIBRATION VERIFICATION - P14
TheEEWB308ABalancerfeaturesausercalibrationveri-
fication program which requires only a few minutes to
complete. Perform this procedure when the balancer
has been moved, disturbed, or whenever accuracy is
questioned. Using calibration verification will ensure
yearsof reliable service. Ifthe P80distancecalibration
has not been performed, do so before proceeding with
P14 checks.
Follow these 3 simple steps:
1. Activate Calibration Verification. Press and hold
the P button while rotating the shaft until the display
reads “P” “14”. See Figure 15 item “1”.
•Once P14 activates, the display will read
"CAL" " GAN" for one second.
•The display will then read "SPN" " 1 ".
•Mounta balanced wheelassembly.
2. Spin shaft with wheel only - Figure 16
•Spin shaftCW, when standinginfrontof wheel.
•Displays "SPN" "UP " when shaft reaches 60 rpm.
•Displays"COA" "ST "witha beepif shaftspeed has
exceeded120rpmandwillcontinueuntilspeed drops
to 119 rpm.
•Displays "CAL" " 1" when the speed drops to 119
rpm. The machine is taking data and doing calcula-
tions.Aftertaking data,shaftis automaticallybraked
to a stopped.
•Displays "SPN" " 2" when shaft stops.
3. Spin shaft with calibration slug on the left side.
Mount calibration slug to shaft. See Fig 17.
•Displays "SPN" "UP " when shaft reaches 60 rpm.
•Displays"COA" "ST "witha beepif shaftspeed has
exceeded120rpmandwillcontinueuntilspeed drops
to 119 rpm.
•Displays "CAL" " 2" when the speed drop down to
119 rpm.At this moment the machine is taking data
anddoing calculationwork.Aftertakingdata,shaftis
automaticallystopped.
•Displays"CAL" "FIN " whenthe second stepof cali-
bration is finished and machine says the calibration
result is FINE.
•Displays "---" "---" when shaft stops and machine is
in the idle state.
NOTE: Error messages will be displayed in the event
problemsareindicatedduringthe calibrationverification
process.In theevent oferrors, contactyourservicerep-
resentative.
Figure 15
Figure16-Shaftwithadapter and wheel
Figure 17 - Calibration Weight attached
1

Page15
ModelEEWB308B OperatorsManual
6.0 RIM OFFSET GAUGE CALIBRATION, P80
To recalibratetheRim Offsetgauge proceedas follows:
1. Make sure the Rim Offset Gauge Arm is at home
position and no adapter or wheel is mounted as shown
inFigure 18.
Figure18
2. Activate the gauge calibration program, “P 80” by
pressing and holding P button and rotate the shaft until
80 is displayed on right display window.
3. The right display will read "CAL SAP" for one sec-
ond. This means CALibration SAPe. Then it displays
"SAP OUT". The SAPE calibration procedure is acti-
vated.
4. Gently pull the SAPe arm OUT until it is fully ex-
tended, Figure 19, hold it steady for about 1 second.
Figure19
5. The display will now read " H POS" with a short
beep sound. This is a reminder to return the arm back
to its Home POSition.
6. Once the Rim Offset Gauge Arm is returned to its
homeposition, machine displays"GOO D " witha con-
firmationbeep. Thecalibrationis finished.

Page16
7.0 EXPLANATION OF PROGRAM CODES
Various functions and features can be programmed to
enhanceoperation. These programs arereferred to as
“PCodes”. Activate the“PCode” programsby pressing
andholdingtheP Button while turningtheshaft untilthe
desired number is displayed on the right display win-
dow. User Codesare explained asfollows:
P1 Toggle between normal and fine mode.
P4 Adapter compensation mode
P3 Toggle switch between gram and ounce display
P12 The balancer has 4 counters that keeps track of total
number of cycles for a certain parameter. The bal-
ancer will automatically cycle through the counters
after P12 is pressed. The order of the counters are:
1. Display “Ctr ALL” for one second.
Counter number of all spins.
2. Display “Ctr CAL” for one second.
Counter number of spins since last calibration.
3. Display “Ctr SrV” for one second.
Counter number of service spins.
4. Display “Ctr USR” for one second.
Counter number of user spins.
P14 Shaft Calibration verification
P18 ALU-S mode (press balancing mode button to exit
and back to DYN mode)
P20 Motorcycle mode
P43 Read or reset operator counters, reads or allows
reset of all four operators. (A, B, C, D)
P44 Read or reset productivity of user. Display counter
number of default user only.
8.0 MAINTENANCE
BEFORE ANY MAINTENANCE OR RE-
PAIRS ARE ATTEMPTED THE MACHINE
MUST BE DISCONNECTED FROM THE
ELECTRIC SUPPLY.
Thisbalancerdoesnotrequire anyspecialmaintenance,
butthe followingprecautions arerequired:
A. Periodically wash all plastic parts with a glass
cleaner. Wipe with a dry cloth.
B. Cleanall adaptersregularlywithanonflammable liq-
uid detergent all. Lubricate with a thin layer of oil.
C. Periodicallyperform a routinecalibration as outlined
on pages 14 and 15 of this manual.
9.0 TROUBLE SHOOTING
TROUBLE CAUSE REMEDY
When turning the machine on, No electric power Check the input voltage
the displays do not light Defect in the electric/electronic system Call the service center
for assistance
The machine gives random readouts. Machine unstable on the floor Check that machine is stable
Water in the tire Remove water from tire.
Loose adaptor Tighten the adaptor firmly
Defective electronic board Call the service center
for assistance
The machine does not stop after Defective electronic component Stop using the machine immedi
balancing cycle ately and call the service
center for assistance
The balancer is slow to display when This machine performs a self-test routine This is a normal characteristic
powering machine up. on start-up. There will be a delay of several of the machine
seconds before the display is activated.
If the parameter arm ceases to Malfunction of the Parameter arm from Replace the Parameter arm or
properly measure rim distance either a failure of the electrical system manually enter the parameters
causing machine lockup. or harness connection failure. to continue operation.

NOTES:

Notice: The information contained in this document is subject to change without notice. Equip-
ment Services makes no warranty with regard to this material. Equipment Services shall not be
liable for errors contained herein or for incidental consequential damages in connection with
furnishings,performance,or use ofthismaterial.
This document contains proprietary information which is protected by copyright and patents.All
rights are reserved. No part of this document may be photocopied, reproduced, or translated
withoutpriorwritten consent ofEquipment Services.
is a registered trademark of Snap-on Inc.
ZEEWB308B revA... 02/25/08...wdc © copyright Equipment Services 2008 All rightsreserved
Snap-on Equipment Services
2801 80th Street
Kenosha, WI 53141 - 1410
For Service Call:
1-800-225-5786
®