14-1
ENGINE COOLING
CONTENTS
GENERAL INFORMATION 2..................
SERVICE SPECIFICATIONS 2.................
LUBRICANT 2...............................
SEALANT 2..................................
ON-VEHICLE SERVICE 3.....................
Engine Coolant Leak Checking 3................
Radiator Cap Valve Opening Pressure Check
3 .............................................Engine Coolant Replacement 3..................
Concentration Measurement 5...................
COOLING FAN 6.............................
THERMOSTAT 8.............................
WATER PUMP 11............................
WATER HOSE AND WATER PIPE 15........
RADIATOR 20...............................
www.WorkshopManuals.co.uk
Purchased from www.WorkshopManuals.co.uk
ENGINE COOLING -General Information/
Service Specifications/Lubricant/Sealant14-2
GENERAL INFORMATION
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/h6G7203,023
4D5, 4M4232,326
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
High pressure valve opening pressure of radiator cap kPa74 - 10364
Range of coolant antifreeze concentration of radiator %30 - 60-
ThermostatValve opening temper-6G788±
2.0-
ature of thermostat_
C4D582±
1.5-
4M476.5±
2.0-
Full-opening tempera-6G7100-
ture of thermostat_
C4D595-
4M490-
Valve lift mm6G710 or more-
4D5, 4M48.5 or more-
LUBRICANT
ItemApplicable modelAmount (including
condense tank) L
MITSUBISHI GENUINE COOLANT or equivalentVehicles without rear heater9.0
Vehicles with rear heater10.5
SEALANT
ItemsSpecified sealantRemarks
Cylinder block drain plug3M Nut Locking Part No. 4171 or equivalentDrying sealant
www.WorkshopManuals.co.uk
Purchased from www.WorkshopManuals.co.uk
