NISSAN TIIDA 2007 Service Repair Manual

CO-40
< ON-VEHICLE REPAIR >[MR18DE]
RADIATOR
ON-VEHICLE REPAIR
RADIATOR
ComponentINFOID:0000000001337840
Removal and InstallationINFOID:0000000001337841
WARNING:
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-35, "Changing Engine Coolant".
CAUTION:
1. Reservoir tank cap 2. Reservoir tank 3. Radiator hose (upper)
4. Mounting rubber (upper) 5. Radiator cap 6. Reservoir tank hose
7. Radiator 8. Mounting rubber (lower) 9. O-ring
10. Radiator drain plug 11. Radiator hose (lower) 12. Cooling fan assembly
A. To water outlet B. To water inlet C. Models with A/C
AWBIA0129GB

RADIATOR
CO-41
< ON-VEHICLE REPAIR >[MR18DE]
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 Perform this step when engine is cold.
 Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-154, "
Component".
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 motors, and move harness to aside.
5. Remove radiator hoses (upper and lower).
6. Remove radiator core support cover.
7. 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).
8. 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. Refer to CO-35, "Inspection".
 Start and warm up engine. Visually check if there is no leaks of engine coolant.
PBIC3800E
PBIC3805E

CO-42
< ON-VEHICLE REPAIR >[MR18DE]
COOLING FAN
COOLING FAN
Component (Models with A/C)INFOID:0000000001337844
Component (Models without A/C)INFOID:0000000001337845
1. Fan motor cover 2. Fan motor 3. Cooling fan control module
4. Washer 5. Fan shroud 6. Washer
7. Cooling fan A. Apply on fan motor shaft Front
PBIC4538E
1. Fan motor 2. Fan shroud 3. Cooling fan
A. Apply on fan motor shaft Front
WBIA0786E

COOLING FAN
CO-43
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Removal and InstallationINFOID:0000000001337846
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-35, "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-154, "
Component".
3. Remove reservoir tank.
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-40, "
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-28, "
Cooling Circuit".
CAUTION:
Be careful not to damage or scratch the radiator core.

CO-44
< ON-VEHICLE REPAIR >[MR18DE]
WATER PUMP
WATER PUMP
ComponentINFOID:0000000001337848
Removal and InstallationINFOID:0000000001337849
REMOVAL
1. Drain engine coolant. Refer to CO-35, "Changing Engine Coolant".
CAUTION:
Perform this step when the engine is cold.
2. Remove drive belt auto-tensioner. Refer to EM-153, "
Removal and Installation of Drive Belt Auto Ten-
sioner".
3. Remove water pump.
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.
INSPECTION AFTER REMOVAL
 Visually check that 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.
INSTALLATION
Installation is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant. Refer to CO-35, "Inspection".
 Start and warm up the engine. Visually check if there is no leaks of engine coolant.
1. Gasket 2. Water pump
PBIC3921E
PBIC3313J

THERMOSTAT
CO-45
< ON-VEHICLE REPAIR >[MR18DE]
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THERMOSTAT
ComponentINFOID:0000000001337850
Removal and InstallationINFOID:0000000001337851
REMOVAL
1. Drain engine coolant. Refer to CO-35, "Changing Engine Coolant".
2. Remove water inlet.
3. Remove thermostat.
4. Remove water pump. Refer to CO-44, "
Removal and Installation".
5. Remove thermostat housing.
INSPECTION AFTER REMOVAL
 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.
1. Thermostat housing 2. Water hose 3. Radiator hose (lower)
4. Water inlet 5. Thermostat 6. Rubber ring
7. Gasket A. To oil cooler B. To radiator
Engine front
PBIC4485E
PBIC3314J

CO-46
< ON-VEHICLE REPAIR >[MR18DE]
THERMOSTAT
 If out of the specification, replace thermostat.
INSTALLATION
Installation is in the reverse order of removal.
Thermostat
CAUTION:
Replace the rubber ring with a new one.
 Install thermostat while making rubber ring (1) groove fit to thermo-
stat flange (A) around the whole circumference.
 Install thermostat (1) into the thermostat housing (2) with jiggle
valve (A) facing upwards.
Thermostat Housing
CAUTION:
Replace the rubber ring with a new one.
 Securely insert the rubber ring into the mating groove of thermostat housing and install it.
 Install the thermostat housing to the cylinder block without displacing the gasket from the gasket position.
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant. Refer to CO-35, "Inspection".
 Start and warm up the engine. Visually check for engine coolant leaks.
ItemsThermostat
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F)
Valve closing temperature 77°C (171°F)
PBIC3315J
PBIC3548J

WATER OUTLET AND WATER CONTROL VALVE
CO-47
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WATER OUTLET AND WATER CONTROL VALVE
ComponentINFOID:0000000001337852
Removal and InstallationINFOID:0000000001337853
REMOVAL
1. Drain engine coolant. Refer to CO-35, "Changing Engine Coolant".
CAUTION:
Perform this step when the engine is cold.
2. Remove air duct. Refer to EM-154, "
Component".
3. Remove radiator hose (upper). Refer to CO-40, "
Component".
4. Remove heater hoses and water hoses.
5. Remove water outlet.
6. Remove water control valve.
7. Remove engine coolant temperature sensor, if necessary.
CAUTION:
 Handle carefully to avoid any shock to engine coolant temperature sensor.
 Replace the gasket with a new one.
INSPECTION AFTER REMOVAL
1. Engine coolant temperature sensor 2. Rubber ring 3. Water control valve
4. Gasket 5. Water hose 6. Gasket
7. Water hose 8. Water outlet 9. Heater hose
10. Heater hose 11. Radiator hose (upper) 12. Water hose
A. To heater B. To electronic throttle control actuator C. To oil cooler
D. To radiator Front
WBIA0856E

CO-48
< ON-VEHICLE REPAIR >[MR18DE]
WATER OUTLET AND WATER CONTROL VALVE
 Place a thread (A) so that it is caught in the valves of water control
valve (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.
NOTE:
The maximum valve lift amount standard temperature for water
control valve is the reference value.
 After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
 If out of the specification, replace water control valve.
INSTALLATION
Installation is in the reverse order of removal.
Water Control Valve
CAUTION:
Replace the rubber ring with a new one.
 Install water control valve while making rubber ring (1) groove fit to
water control valve flange (A) around the whole circumference.
 While the mark (A) points to up, install water control valve (2) with
frame center (B) facing straight upward into water outlet (1).
Water Outlet
Install the water control valve to the cylinder head without displacing the valve from the valve position.
Water Hoses
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature 90°C (194°F)
PBIC3314J
PBIC3317J
PBIC4700E

WATER OUTLET AND WATER CONTROL VALVE
CO-49
< ON-VEHICLE REPAIR >[MR18DE]
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Install water hoses (3),(5) as shown.
 Electric throttle control actuator (1)
 Clamp (2)
 Water outlet (4)
 Paint mark (A)
 Clamp shall not interfere with the bulged area (B)
INSPECTION AFTER INSTALLATION
 Check for leaks of engine coolant. Refer to CO-35, "Inspection".
 Start and warm up the engine. Visually check if there is no leaks of engine coolant. C : 3 - 7 mm (0.12 - 0.29 in)
AWBIA011 5GB