engine coolant NISSAN TIIDA 2007 Service User Guide

RADIATOR
CO-17
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Do not remove radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-27, "
Exploded View".
3. Remove reservoir tank as follows:
a. Disconnect reservoir tank hose.
b. Release the tab (A) in the direction shown by the arrow ( ).
c. Lift up while removing the reservoir tank hose, and remove it.
4. Disconnect harness connector from fan motor, and move harness aside.
5. Disconnect A/T fluid cooler hoses if equipped.
 Install plug to avoid leakage of A/T fluid if equipped.
6. Remove radiator hoses (upper and lower).
7. Remove radiator core support cover.
8. Remove radiator core support (upper) bolts, bolts of stationary
part on the radiator core support side and clip. Lift radiator
assembly (1) from radiator (upper) mount part of radiator core
support (upper) (2).
9. Move radiator assembly (1) to the rearward direction of vehicle,
and then lift it upward to remove.
CAUTION:
Do not damage or scratch A/C condenser if equipped and
radiator core when removing.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Do not damage or scratch A/C condenser if equipped and radiator core when removing.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant.
 Start and warm up engine. Visually check if there is no leaks of engine coolant and A/T fluid if equipped.
PBIC3800E
PBIC3805E

COOLING FAN
CO-19
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Removal and InstallationINFOID:0000000001534609
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-27, "
Exploded View".
3. Remove reservoir tank.
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-16, "
Component".
5. Disconnect harness connectors from fan motor, and move harness to aside.
6. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch the radiator core.
INSTALLATION
Installation is the reverse order of removal.
 Cooling fans are controlled by ECM. For details, refer to CO-4, "
Engine Cooling System".
CAUTION:
Be careful not to damage or scratch the radiator core.

CO-20
< ON-VEHICLE REPAIR >[HR16DE]
WATER PUMP
WATER PUMP
Exploded ViewINFOID:0000000001381568
Removal and InstallationINFOID:0000000001381569
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Never spill engine coolant on drive belts.
2. Steer front wheel to the right.
3. Remove front fender protector (RH). Refer to EXT-22, "
Removal and Installation".
4. Loosen mounting bolts of water pump pulley before loosening belt tension of drive belt.
5. Remove drive belt. Refer to EM-16, "
Removal and Installation".
6. Remove water pump pulley.
7. Remove water pump.
 Loosen mounting bolts in reverse order as shown.
 Engine coolant will leak from cylinder block, so have a recep-
tacle ready below.
CAUTION:
 Handle water pump vane so that it does not contact any
other parts.
 Water pump cannot be disassembled and should be
replaced as a unit.
INSTALLATION
Installation is in the reverse order of removal.
Water pump.
1. Gasket 2. Water pump 3. Water pump pulley
PBIC3807E
KBIA3393J

WATER PUMP
CO-21
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 Tighten bolts in numerical order as shown.
Water pump pulley.
CAUTION:
Never install mounting bolts (A) to oblong holes (B).
 Water pump pulley (1)
InspectionINFOID:0000000001381570
INSPECTION AFTER REMOVAL
 Visually check if there is no significant dirt or rusting on water
pump body and vane (A).
 Make sure that there is no looseness in vane shaft, and that it turns
smoothly when rotated by hand.
 Replace water pump, if necessary.
INSPECTION AFTER INSTALLATION
 Check that the reservoir tank cap is tightened.
 Check for leaks of engine coolant using suitable tools. Refer to CO-11, "
Inspection".
 Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
KBIA3393J
PBIC3809E
PBIC3808E

CO-22
< ON-VEHICLE REPAIR >[HR16DE]
THERMOSTAT
THERMOSTAT
Exploded ViewINFOID:0000000001381571
Removal and InstallationINFOID:0000000001381572
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Never spill engine coolant on drive belt.
2. Add paint mark, then disconnect radiator hose (lower) from water inlet. Refer to CO-16, "
Component".
3. Remove water inlet and thermostat.
 Engine coolant will leak from cylinder block, so have a receptacle ready below.
INSTALLATION
Installation is in the reverse order of removal.
Thermostat
 Install thermostat with making rubber ring (1) groove fit to thermo-
stat flange (A) with the whole circumference.
1. Radiator hose (lower) 2. Water inlet 3. Rubber ring
4. Thermostat
A. To radiator
PBIC3810E
PBIC3811E

THERMOSTAT
CO-23
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 Install thermostat (2) into the cylinder block (1) with jiggle valve (A)
facing upwards.
Water Inlet.
After installation, fix water inlet clip (A) on the oil level gauge guide
(1) positioned (b) as shown.
InspectionINFOID:0000000001381573
INSPECTION AFTER REMOVAL
WARNING:
Use a protector to prevent a burn during the work.
Thermostat
 Place a thread (A) so that it is caught in the valves of thermostat
(1). Immerse fully in a container (B) filled with water. Heat while
stirring.
 The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
 Continue heating. Check the full open valve lift amount.
 After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
 If out of the standard, replace thermostat.
INSPECTION AFTER INSTALLATION
 Check that the reservoir tank cap is tightened.
 Check for leaks of engine coolant using suitable tools. Refer to CO-11, "
Inspection".
 Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
PBIC3812E
PBIC3755E
Standard : Refer to CO-27, "Thermostat".
PBIC3314J

CO-24
< ON-VEHICLE REPAIR >[HR16DE]
WATER OUTLET
WATER OUTLET
Exploded ViewINFOID:0000000001381574
Removal and InstallationINFOID:0000000001381575
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-11, "Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Never spill engine coolant on drive belt.
2. Disconnect radiator hose (upper). Refer to CO-16, "
Component".
3. Disconnect harness connector from engine coolant temperature sensor.
4. Remove electronic throttle control actuator water hoses (Northern Europe models).
5. Remove heater hoses.
6. Remove water outlet.
7. Remove engine coolant temperature sensor from water outlet, if necessary.
INSTALLATION
Installation is the reverse order of removal.
1. Engine coolant temperature sensor 2. Washer 3. Gasket
4. Radiator hose (upper) 5. Water outlet 6. Heater hose
7. Heater hose 8. Water hose (Northern Europe models) 9. Water hose (Northern Europe models)
A. To electronic throttle control actua-
torB. To heater core C. To radiator
: Engine front
PBIC3816E

WATER OUTLET
CO-25
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InspectionINFOID:0000000001381576
INSPECTION AFTER INSTALLATION
 Check that the reservoir tank cap is tightened.
 Check for leaks of engine coolant using suitable tool. Refer to CO-11, "
Inspection".
 Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.

SERVICE DATA AND SPECIFICATIONS (SDS)
CO-27
< SERVICE DATA AND SPECIFICATIONS (SDS) [HR16DE]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Periodical Maintenance SpecificationINFOID:0000000001381577
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (Imp qt)
RadiatorINFOID:0000000001381578
RESERVOIR TANK CAP
Unit: kPa (bar, kg/cm2, psi)
RADIATOR
Unit: kPa (bar, kg/cm2, psi)
ThermostatINFOID:0000000001381579
Engine coolant capacity [With reservoir tank (“MAX” level)] 6.3 (5-3/8)
Cap relief pressureStandard 140 (1.4, 1.43, 20.3)
Limit 150 (1.5, 1.53, 21.75)
Leakage testing pressure 150 (1.5, 1.53, 21.75)
ThermostatStandard
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8.0 mm/95°C (0.315 in/203°F)
Valve closing temperature 77°C (171°F)

CO-30
< SYMPTOM DIAGNOSIS >[MR18DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001337836
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed Thermostat
Damaged finsDust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
Fan assembly— High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — —
Improper engine coolant
mixture ratio—
—
Engine coolant viscosity—
Poor engine coolant quality — —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration