Snap-On EEWB330A - Spoke Wheel Balancing; Behind-the-Spokes Placement (SWM)

Snap‐onEEWB330AHandspinWheelBalancer
5.10Behind–the–spokesplacement(SWM)

Whenspokewheelsarebalanced,thebehind–the–
spokesplacementmode(alsocalledsplitweightmode)
allowsbalanceweightswhichwouldhavetobefitted
betweentwospokesaccordingtothemeasured
unbalance(hencewouldbevisiblefromoutside)tobe
placedinhiddenpositionbehindtwospokesadjacentto
theunbalancelocation(seeexample,Fig.5‐26).Aftera
measuringruntheelectronicunitcalculatesthebehind–
the–spokesplacementautomaticallyandreadsthe
relativebalanceweightlocationsonthescreen.The
operatingstepsforthebehind–the–spokesplacement
modearedescribedandillustratedbelow.

5.10.1SplitWeightMode(SWM)

SelectingispossibleonlyafterbalancingaHWMwheel
thathasanimbalance10gramintherightplane.

Note:The“fine”read‐outaccuracyisnotavailablewith
thismode.Selectthismodeto“hide”therightplane
weightbehindthetwospokesthatarenearesttothe
calculatedweightapplicationposition.Thatway,the
weightsarenotvisiblefrom“outside”.Takeinto
accountthefollowinglimitations(Fig.5‐27):‐thewhole
enclosedangleislimitedto120°.‐bothangles(from
“visibleweightposition”toeither“hiddenweight
position”)mustbebiggerthan0°.Applytheweightin
theleftplaneofanHWMwheel.DONOTapplythe
weightintherightsideplane,butselecttheMODE‐key.
The displaynowequals(Fig.5‐28)(theweightposition
and HWMindicatorsdependontheHWMmode
selected). Note:TheMODEindicatorwillbeonandthe
SWM indicatorwillblink.IftheSWMindicatordoesnot
blink, che
ckiftheunitisinHWMmode.
SelectEntertorunthismode.
Note:TheMODEindicatorgoesoff,ashortbeepwillbe
heardandtheSWMindicatorwilllight.TheSWMmode
isnow
activated.The2weightpositions(S1andS2
)in
therightsideplanearetobe
statedtotheunit.Theleft
planedisplaywillnotchangeduringthefollowingsteps.