Navistar MaxxForce 7

SECTION3–INSTRUMENTS,INDICATORS,ANDSWITCHES
HighExhaustSystemTemperature(HEST)Lamp
Figure17HESTLamp
WARNING:Exhaustcomponentsareoperatingunder
normalconditionsandexhaustgasesareatextremelyhigh
temperatures.Whenstationary,keepawayfrompeople
andammablematerials,vapors,orstructures,orstopthe
engine.
TheHESTlampwillilluminatewhentheexhaustsystemishot
andregenerationisinprogress.Foradditionalinformationsee
theapplicableVehicleOperatorManual.
DieselParticulateFilter(DPF)Indicator
Figure18DieselParticulateFilterIndicator
Thedieselparticulatelterindicatoroperatesatthreedifferent
levels.
LevelOne
•DPFindicatorwillilluminatesolidandremainonwhenthe
levelsofsootexceedacceptablelevels.Theregeneration
processshouldbeginbyusingeitherofthefollowingtwo
methods.Thelampwillturnoffwhentheregeneration
processiscomplete.
•Thevehiclecanbesafelydrivenonthehighwayat
highwayspeedswhiletheregenerationprocessisin
operation.
•Thevehicleshouldbeparkedinasafelocationand
starttheParkedRegenerationprocesstopreventloss
ofpower.
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