Navistar MaxxForce 7

SECTION5–MAINTENANCESCHEDULEANDSERVICEPROCEDURES
ServiceProcedures(cont.)
SERVICECOOLINGSYSTEM(cont.)
CoolantReplacementUsingGravityMethod
1.Putadrainpanundertheradiator.
2.Removecoolanttankpressurecap.
3.Openradiatordraincock(ifpresent)orinstallafemale
quick-connectttingandhosetothequickdisconnecttting
installedintheradiatorendtank(s)fromthefactory.
4.Afteroneradiatorhasdrained,closethedrainvalve,remove
femalequickconnect,andrepeatsteps3through5forthe
otherradiator.
5.Begindrainingtheengineblockbymovingthedrainpan
undertherightsideoftheengine.
Figure39RightSideCoolantDrainPlug
6.Removerightsidecoolantdrainplug.
7.Aftercoolanthasdrained,putanewO-ringondrainplug
andinstallplugintocrankcase.Tightenplugto15lb·ft(20
N·m).
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