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Navistar MaxxForce 7 User Manual

Navistar MaxxForce 7
110 pages
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SECTION4ENGINEOPERATION
Operation(cont.)
COLDWEATHEROPERATION(cont.)
Correctcoolantandcoolingsystemlevel
Recommendedoilgrade
2.Attheendofeachdailyoperationdothefollowing:
Fillthefueltankwithcorrectfuel.
Drainwaterfromthefuellterhousing.
Checkoillevel.
Cleanexternalsurfacesoftheengineandaccessories
topreventdirtorsnowbuildup.
Cleanoutsideandinbetweenradiatorstopreventdirt
orsnowbuildup.
COLDAMBIENTPROTECTION(CAP)
CAPsafeguardstheenginefromdamagecausedbyprolonged
idleatnoloadduringcoldweather.Thisfeatureshouldonlybe
disabledforspecializedapplications.Enginedamagemayoccur
ifCAPisdisabled.
CAPmaintainsenginecoolanttemperaturebyincreasingengine
rpmtoaprogrammedvaluewhenambientairtemperatureis
below32°F(0°C),coolanttemperatureisbelow167°F(75°C),
andenginehasbeenidlingatnoloadforoverveminutes.
Theenginespeedcontinuestoincreaseordecreasetomaintain
acoolanttemperatureof194°F(90°C)untilthefollowingoccurs:
Engineloadisgreaterthan45%.
Brakepedalisappliedorbrakeswitchfaultisdetected.
Clutchpedalispressedorclutchpedalswitchfaultis
detected(manualtransmissions,ifequippedwithaclutch
switch).
Shiftselectorismovedfromneutral(automatic
transmissions).ShiftselectormustbeinneutralforCAP
towork.
PowerT akeoff(PTO)switch,alsousedforelectronichand
throttle,isturnedonandactivelycontrolsenginespeed.
AcceleratorpedalispressedorAcceleratorPedalPosition
(APP)faultisdetected.
ISTisenabled(2010and2011vehiclesonly).
EngineCoolantTemperature(ECT)sensorfaultisdetected.
IntakeAirT emperature(IAT)ambienttemperaturesensor
faultisdetected.
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Navistar MaxxForce 7 Specifications

General IconGeneral
BrandNavistar
ModelMaxxForce 7
CategoryEngine
LanguageEnglish

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