Engine Cooling System: Removal & Installation Nissan Versa II

REMOVAL

Note. When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

1. Drain engine coolant. Refer to " «DRAINING ENGINE COOLANT»(ref-605935-S26294057612014032500000) ". CAUTION: Perform this step when the engine is cold. Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to " «REMOVAL AND INSTALLATION»(ref-605933-S28177087482014032500000) ".
3. Disconnect battery negative terminal. Refer to " «REMOVAL AND INSTALLATION»(ref-605928-S27864629982014032500000) ".
4. Loosen the following from the radiator core support (upper): Air bag harness Hood lock cable Radiator cap adapter Horn harness
5. Remove radiator hose (lower).
6. Remove radiator hose (upper) from water outlet.
7. Disconnect harness connector from fan motor, and move harness aside.
8. Disconnect reservoir tank hose, and remove reservoir tank.
9. Remove radiator core support (upper).
10. Remove radiator hose (upper) from radiator.
11. Remove cooling fan assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-605935-S35765474452014032500000) ". CAUTION: Be careful not to damage or scratch the radiator.
12. Disconnect CVT cooler lines or A/T fluid cooler hose (if equipped).
13. Remove the radiator from bottom of the vehicle. CAUTION: When removing, do not damage or scratch radiator core or A/C condenser.

INSTALLATION

Installation is in the reverse order of removal.

Scheme 7

Scheme 8

Scheme 9

Scheme 10

1. Insert the radiator hose (1) all the way to the stopper (2) or by 33 mm (1.30 in) (hose without a stopper) as shown below.
2. The correct orientation of the hose clamps are as shown below. Radiator hose Hose end Paint mark Position of hose clamp (1) Radiator hose (upper) Radiator side Upper A Engine side Upper B Radiator hose (lower) Radiator side Lower C Engine side Upper D (1) Refer to the illustrations for the specific position for each hose clamp tab.
3. The angle (b) created by the hose clamp pawl and the specified line (A) must be within ±30° as shown below.
4. To install hose clamps (1), check that the dimension (A) from the end of the hose clamp on the radiator hose to the hose clamp is within the reference value. Dimension (A): 3 - 7 mm (0.12 - 0.28 in) CAUTION: When installing do not damage or scratch radiator core or A/C condenser. Replace water hose clamp if it is removed. Use only Genuine NISSAN bolts for the cooling fan assembly and strictly follow the tightening torque. Over tightening may damage the radiator.

Note. When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

1. Partially drain engine coolant from radiator. Refer to " «DRAINING ENGINE COOLANT»(ref-605935-S26294057612014032500000) ". CAUTION: Perform this step when the engine is cold. Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to " «REMOVAL AND INSTALLATION»(ref-605933-S28177087482014032500000) ".
3. Disconnect battery negative terminal. Refer to " «REMOVAL AND INSTALLATION»(ref-605928-S27864629982014032500000) ".
4. Loosen the following from the radiator core support (upper): Air bag harness Hood lock cable Radiator cap adapter Horn harness
5. Remove radiator hose (upper) from water outlet.
6. Disconnect harness connector from fan motor, and move harness aside.
7. Disconnect reservoir tank hose, and remove reservoir tank.
8. Remove radiator core support (upper).
9. Remove radiator hose (upper) from radiator.
10. Remove cooling fan assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-605935-S35765474452014032500000) ". CAUTION: Be careful not to damage or scratch the radiator.

Installation is in the reverse order of removal.

Note. Cooling fan is controlled by ECM. For details, refer to " DIAGNOSIS DESCRIPTION ".

Scheme 11

1. Drain engine coolant from radiator. Refer to " «DRAINING ENGINE COOLANT»(ref-605935-S26294057612014032500000) ". CAUTION: Perform this step when the engine is cold. Do not spill engine coolant on drive belt.
2. Remove front wheel and tire (RH). Refer to " «ADJUSTMENT»(ref-605936-S10289281402014032500000) ".
3. Remove front fender protector (RH). Refer to " «REMOVAL AND INSTALLATION»(ref-605937-S06682139002014032500000) ".
4. Loosen water pump pulley bolts before loosening belt tension of drive belt.
5. Remove drive belt. Refer to " «REMOVAL AND INSTALLATION»(ref-605933-S42764128112014032500000) ".
6. Remove water pump pulley.
7. Remove water pump. Loosen water pump bolts in reverse order as shown below. Engine coolant will leak from cylinder block, so have a receptacle ready below. CAUTION: Do not allow water pump vane to contact any other parts. Water pump cannot be disassembled and must be replaced as an assembly.

Installation is in the reverse order of removal.

1. Tighten water pump bolts in order as shown below. CAUTION: Do not allow the water pump vane to contact any other parts. Water pump cannot be disassembled and must be replaced as an assembly. Do not reuse gasket. Sealing surface must be clean and free of dents or flaws.

Removal and Installation

1. Drain engine coolant from radiator. Refer to " «DRAINING ENGINE COOLANT»(ref-605935-S26294057612014032500000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
2. Remove air duct. Refer to " «REMOVAL AND INSTALLATION»(ref-605933-S28177087482014032500000) ".
3. Remove oil level gauge and guide. Refer to " «EXPLODED VIEW»(ref-605933-S22486553002014032500000) ".
4. Disconnect radiator hose (lower) from water inlet. Refer to " «EXPLODED VIEW»(ref-605935-S31360684332014032500000) ".
5. Remove water inlet, thermostat, and rubber ring. NOTE: Engine coolant will leak from cylinder block, so have a receptacle ready below.

Scheme 12

1. 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.
2. The valve opening temperature is the temperature at which the valve opens and falls from the thread.
3. Continue heating. Check the full open valve lift amount.
4. After checking the maximum valve lift amount, lower the water temperature and check the valve closing temperature. Standard: Refer to " «STANDARD AND LIMIT»(ref-605935-S01990164372014032500000) ".

1. If out of the standard specification range, replace the thermostat.

Installation is in the reverse order of removal.

Scheme 13

1. Install thermostat making sure rubber ring (1) groove fits securely to thermostat flange (A). CAUTION: Do not reuse rubber ring.
2. Install thermostat (2) into the cylinder block (1) with jiggle valve (A) facing upward.

Scheme 14

Note. When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

1. Drain engine coolant. Refer to " «DRAINING ENGINE COOLANT»(ref-605935-S26294057612014032500000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
2. Remove air ducts and air cleaner assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-605933-S28177087482014032500000) ".
3. Remove battery wedge bracket. Refer to " «REMOVAL AND INSTALLATION»(ref-605928-S27864629982014032500000) ".
4. Disconnect radiator hose (upper). Refer to " «EXPLODED VIEW»(ref-605935-S31360684332014032500000) ".
5. Disconnect harness connector from engine coolant temperature sensor.
6. Disconnect harness connector from cylinder block heater (Canada only).
7. Disconnect water hoses and heater hoses from water outlet.
8. Remove water outlet.
9. Remove engine coolant temperature sensor from water outlet, if necessary.
10. Remove cylinder block heater from water outlet, if necessary (Canada only).

Installation is in the reverse order of removal.