ENGINE COOLING ±
General Information/
Service Specifications/Lubricant/Sealants14-2
GENERAL INFORMATION14100010125
The cooling system is designed to keep every part
of the engine at appropriate temperature in
whatever condition the engine may be operated.
The cooling method is of the water-cooled, pressure
forced circulation type in which the water pump
pressurizes coolant and circulates it throughout the
engine. If the coolant temperature exceeds the
prescribed temperature, the thermostat opens to
circulate the coolant through the radiator as well
so that the heat absorbed by the coolant may be
radiated into the air.The water pump is of the centrifugal type and is
driven by the drive belt from the crankshaft.
The radiator is the corrugated fin, down flow type.
ItemsSpecifications
RadiatorPerformance kJ/h4G63 114,700
4G63 126,800
4G64, 4D56 <2WD>170,000
4D56 <4WD>227,300
Automatic transmission oil coolerPerformance kJ/h4G63 6,400
4D56 6,300
SERVICE SPECIFICATIONS14100030121
ItemsStandard valueLimit
High pressure valve opening pressure of radiator cap kPa75 ± 10565
Range of coolant antifreeze concentration of radiator %30 ± 60±
ThermostatValve opening temperature of thermostat C82 + 1.5±
Full-opening temperature of thermostat C95±
Valve lift (at 95C) mm4G6, 4D56 <4WD>8.5 or more±
4D56 <2WD>8 or more±
LUBRICANT14100040100
ItemsQuantity
HIGH QUALITY ETHYLENE GLYCOL ANTIFREEZE COOLANT4G637.4
4G64, 4D56 <2WD>7.7
4D56 <4WD>7.8
SEALANTS14100050110
ItemsSpecified sealantRemarks
Cylinder block drain plug3M Nut Locking Part No. 4171 or equivalentDrying sealant
Water by-pass fitting <4G6>Mitsubishi Genuine Parts No. MD970389 or
equivalentSemi-drying sealant
ENGINE COOLING ± Cooling Fan14-6
INSPECTION14100220023
COOLING FAN CHECK
Check blades for damage and cracks.
Check for cracks and damage around bolt holes in fan
hub.
If any portion of fan is damaged or cracked, replace cooling
fan.
FAN CLUTCH CHECK
Check to ensure that fluid in fan clutch is not leaking
at case joint and seals. If fluid quantity decreases due
to leakage, fan speed will decrease and engine
overheating might result.
When a fan attached to an engine is turned by hand,
it should give a sense of some resistance. If fan turns
lightly, it is faulty.
Check bimetal strip for damage.
ENGINE COOLING ± Radiator14-15
REMOVAL SERVICE POINT
ATRANSMISSION FLUID COOLER HOSE REMOVAL
After removing the hose from the radiator, plug the hose
and the radiator nipple to prevent dust or foreign particles
from getting in.
