Case 621G - Page 223

7-MAINTENANCE
Washingofthecoolingsystem
1.Emptytheenginecoolingsystembydrainingthecoolantintoasuitablecontainer.
2.Fillthesystemwithcleanwater.
3.Starttheengineandruntheengineforatleast30min.
NOTE:makesurethatyouactivatetheheatingsystem(ifequipped)tocirculateuidthroughtheheatercore.
4.RepeatSteps1to3foratotaloftwowashes.
5.FillthesystemwithOATcoolant.
6.Operatetheengineuntilitiswarm.Inspectthemachineforleaks.
YoucanidentifyOATcoolantbyitsyellowcolor.Also,the
decalshownislocatednearthellpointofthecooling
systemwheneverthefactoryllisCASEAKCELAACT-
IFULL™OTEXTENDEDLIFECOOLANT.Thisdecalis
availableinthreedifferentsizes.Seethetablebelowfor
theassociatedpartnumbers.
CNHIndustrialpart
number
Size
4775733050mmx50mm
47757331
75mmx75mm
47757332100mmx100mm
477573301
Denitions
Conventionalcoolant:
Acoolantthatreliesoninorganicinhibitorssuchassil-
icates,nitrites,andphosphatesforcorrosionandcavi-
tationprotection.
OrganicAcidTechnology(OAT)coolant:
Acoolantthatreliesoninhibitorssuchasorganicacid
salts(potassiumandsodiumsalts)forcorrosionand
cavitationprotection.Theorganicsaltsproduceapro-
tectivelmonthecylinderlines,avoidingcavitationero-
sion.
7-15