Navistar ProStar+ - Tires

MaintenanceInstructions
Troubleshooting
NoRestrictionReading
POSSIBLECAUSESHOWTOCHECK
PluggedttingorvacuumlineRemovethegaugeandapplyavacuumuntilitislockedupattheredzone.Reinsertthegaugeand
holdintheresetbutton.Indicatorwillfullyreturnunlesslineorttingisplugged.Aslowreturnis
normalduetosafetylterintting.
LeakinvacuumlineApplyvacuumtogaugeuntillockedupatredzone.Reconnectgaugeandcloseendoflineairtight.
Holdinresetbutton.Indicatorwilldropslightlyandthennotmoveunlessvacuumlinehasaleak.
LeakingaugeRepeataboveexceptclosegaugeconnectionairtight.
Engineairowtoolowtogeneratea
restrictionreading
Turbochargedenginesmustbefullloadtopullfullengineairow.
AircleanerelementsplitopenVisuallyinspectelement.
HighRestrictionReading
POSSIBLECAUSESEXPLANATION
PluggedouterelementParticlesinouterltermediarestrictairow.Replaceouterelement.
Pluggedinnerelement(ifequipped)Replaceinnerelement.
PluggedinletscreensorductsChecksystemupstreamfromrestrictiontapfordebris,damage,orimproperinstallation.
HeavysnoworrainTemporaryhighrestrictioncanoccurduringarainorsnowstorm;itdisappearsafterdryingout.If
gaugeislockedupatredzone,checkelementsfordamage.Resetgauge.Reuseelement,recheck
gaugereading.
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