Navistar ProStar+ - Page 255

MaintenanceInstructions
Out-of-roundtiresandwheelassembliescansometimesbe
correctedbyreclockingthetirerelativetothewheel.
Tighteningprocedurefordiscwheelswithangenuts
(hub-piloted):
1.Cleanthematingsurfacesofthehub,drum,andwheel(s)
aswellasthewheelstudsandwheelnutswithawirebrush
priortoassembly.
2.Lubricatethetwo-piecewheelnutsbyputtingtwodropsofoil
intheslotbetweenthenutandwasherandspinthewasher
tospreadtheoilaroundthenut-to-washercontactsurface.
3.Carefullylubricatethewheelstudthreadsbywipingthem
withafreshlyoiledcloth.Donotgettheoilonanyother
surfacesorthewheelclampingeffectivenesswillbe
reduced!
4.Topreventaluminumwheelsfromgettingstuckonthehub
duetocorrosion,applyathincoatofantiseizecompound
ordiscbrakecorrosioncontrolgreasetothehubpilotpads
only.
5.Slidetheinnerwheel(ifduals)orsteerwheeloverthewheel
studsandontothepilotpadsofthehub.Caremustbetaken
toavoiddamagetothestudthreadswhilepositioningthe
wheel.Ensurethatthewheelisrestingonthepilotpads
andisagainstthebrakedrum.
6.Hand-startallwheelnutstoavoidcross-threading.
7.Startingwiththenutatthe12o’clockpositionandusing
theappropriatestarorcrisscrosspattern(seewheelnuts
torquesequencediagram),runthewheelnutsdownthe
wheelstudswithanimpactwrenchuntiltheyaresnug
againstthewheel.Thepurposeofthisstepistosnugthe
wheel(s)inthecorrectposition,nottoapplythenaltorque.
Thetighteningofeachnutshouldbestoppedimmediately
whenthewheeliscontacted,resultinginawheelnuttorque
wellbelowthenalspeciedtorque.
8.Useacalibratedtorquewrenchtoapplythespeciedtorque
toeachwheelnutinthesequencespeciedinthewheel
nutstorquesequencediagramabove.RefertoSECTION
8—MAINTENANCEINTERVALSANDSPECIFICATIONS
forpropertorquevalues.
1.FlangeNutMount–8Stud
2.FlangeNutMount–10Stud
9.Allwheelsundergoaprocesscalledjointsettlingwhen
placedinserviceafterawheelinstallationhasbeen
performed.Thisprocessresultsinareductioninthetorque
onthewheelnuts.Tocorrectthiscondition,operatethe
vehiclenormallyforapproximately50miles(80km),then
useacalibratedtorquewrenchtoretorquethewheelnuts
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