Thereisabeadprotectornutonthebothwheels.Thebeadprotectornutpreventsthetireandtubefromslippingontherimanddamagingthevalvestem.Valvestemdamagemaycausethetubetoleak,necessitatingtubereplacement.Inordertokeepthetireandtubeinpositionontherim,inspectthebeadprotectornutbeforeridingandtightenitifnecessary.Tightenthevalvestemnutfingertightonly.Setupadialgaugeonthesideoftherimandro-tatethewheeltomeasureitsaxialrunout.Thedif-ferencebetweenthehighestandlowestreadingsistheamountofrunout.●Setupthedialgaugeontheinnercircumferenceoftherimandrotatethewheeltomeasureitsra-dialrunout.Thedifferencebetweenthehighestandlowestreadingsistheamountofrunout.●Acertainamountofrimwarpage(runout)canbecorrectedbyrecenteringtherim,thatis,byloos-eningsomespokesandtighteningothertochangethepositionofcertainportionsoftherim.Iftherimisbadlybent,however,itshouldbereplaced.A.SpokeWrenchBeadProtectorA.BeadProtectorNutMAINTENANCEANDADJUSTMENT159RimRunout
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