Case CX490D - Page 259

6-MAINTENANCE
Flushingtheenginecoolingsystem
9.Inspectandcleantheradiatorcap.Inspecthosesand
clampsoftheenginecoolingsystem.Makesureto
replaceanydamagedparts.
10.Filltheradiatorwithtapwateruptotheedgeofthe
coolantinlet.
11.Closetheradiatorcap.
SMIL15CEXY547AA5
12.FillthereservetankwithtapwateruptotheFULL
mark.Closethecapofthereservetank.
SMIL19CEX0592AA6
13.Snugtightentheairbleedplug(1)ontheEGRcooler
whentapwateroverowsfromit.
14.Starttheengineandletitrunatlowidlespeedfor
20min.Turnonthecabheatingsystem,andsetthe
temperatureandthefanspeedtointermediatelevel.
15.Stoptheengine.Waituntiltheenginehascooled
down.Checkforleakagesfromthehosesoftheen-
ginecoolingsystem.
16.Drainwatercompletelyfromtheenginecoolingsys-
tem.Repeattheushingprocedure(stepsfrom10to
15)for2moretimes.Ifdrainedwaterisstillnotclean,
furtherrepeattheushingprocedureuntilcleanwater
isdrainedfromtheengine.
SMIL20CEX1315AA7
6-65