Navistar MaxxForce 7

SECTION5–MAINTENANCESCHEDULEANDSERVICEPROCEDURES
ServiceProcedures(cont.)
COOLANTLEVEL
ServiceInterval:BeforeEngineOperation
ExtendedLifeCoolant(ELC)Premix50/50isthestandard
factoryllforthecoolingsystem.Ifacustomerwishestouse
adifferentcoolant,itshouldminimallymeetASTMD6210,
StandardSpecicationforfully-FormulatedGlycolBase
EngineCoolantforHeavyDutyEngines.ELCPremix50/50is
usedtoreplenishcoolantlossandensurethatglycol/water
concentrationsstayinbalance.
WARNING:Topreventpersonalinjuryordeath,dothe
followingwhenremovingtheradiatorcaporcoolanttank
cap:
•Allowtheenginetocoolfor15minutesormore.
•Wrapathickclotharoundtheradiatorcaporcoolanttank
cap.
•Loosencapslowlyaquartertohalfturntoventpressure.
•Pauseforamomentuntilallpressurehasescapedtoavoid
beingscaldedbysteam.
•Continuetoturncapcounterclockwisetoremove.
1.Checkcoolantlevelinthecoolanttank.
•CoolantlevelshouldbeatmidpointofADDandMAX.
•IfcoolantlevelisbelowtheADDmark,continuewith
step2.
2.RemovecoolanttankcapandaddELCPremix50/50until
theuidlevelreachesthemidpointbetweenADDandMAX.
3.Installandtightenthecoolanttankcapuntiltheplasticcap
clicksorthemetalcaprunsupagainstthedetent.
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