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Engine Cooling System: Removal & Installation Nissan Versa I

Cooling Fan 3 illustrations ~623 words

Removal and Installation

WARNINGDo 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.

Scheme 11

Scheme 11: REMOVAL
Scheme 11: REMOVAL

Scheme 12

Scheme 12
Scheme 12
  1. Drain engine coolant from radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-337624-S02375434402009080600000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
  2. Remove air duct (inlet). Refer to " «AIR CLEANER AND AIR DUCT»(ref-337614-S10865575882009080600000) ".
  3. Remove reservoir tank as follows: Disconnect reservoir tank hose. Release the tab (A) in the direction shown by the arrow <=. Lift up while removing the reservoir tank hose, and remove it.
  4. Disconnect harness connector from fan motors, and move harness to aside.
  5. Disconnect CVT or A/T fluid cooler hoses if equipped. Install plug to avoid leakage of CVT or A/T fluid if equipped.
  6. Remove radiator hoses (upper and lower).
  7. Remove radiator core support cover. Refer to " «RADIATOR CORE SUPPORT»(ref-319465-S23646530712009062600000) ".
  8. Remove radiator core support (upper) bolts, bolts of stationary part on the radiator core support side and clip. Lift radiator 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.

CAUTIONDo not damage or scratch A/C condenser if equipped and radiator core when removing.

REMOVAL

  1. Drain engine coolant from radiator. Refer to " «DRAINING ENGINE COOLANT»(ref-337624-S40553162252009080600000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
  2. Remove air duct (inlet). Refer to " «COMPONENTS»(ref-337614-S12570176242009080600000) ".
  3. Remove reservoir tank. Refer to " «COMPONENTS»(ref-337624-S03011774522009080600000) ".
  4. Disconnect radiator hose (upper) at radiator side. Refer to " «COMPONENTS»(ref-337624-S03011774522009080600000) ".
  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 is the reverse order of removal.

  1. Cooling fans are controlled by ECM. For details, refer to " «DTC P1217 ENGINE OVER TEMPERATURE»(ref-319464-S37686528142009062600000) ".
CAUTIONBe careful not to damage or scratch the radiator core.
  1. Drain engine coolant. Refer to " «DRAINING ENGINE COOLANT»(ref-337624-S40553162252009080600000) ". CAUTION: Perform this step when the engine is cold.
  2. Remove drive belt auto-tensioner. Refer to " «TIMING CHAIN»(ref-337614-S34589023372009080600000) ".
  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.

Installation is in the reverse order of removal.

  1. Drain engine coolant. Refer to " «DRAINING ENGINE COOLANT»(ref-337624-S40553162252009080600000) ".
  2. Remove water inlet.
  3. Remove thermostat.
  4. Remove water pump. Refer to " «WATER PUMP»(ref-337624-S21828061572009080600000) ".
  5. Remove thermostat housing.

Installation is in the reverse order of removal.

  1. Drain engine coolant. Refer to " «DRAINING ENGINE COOLANT»(ref-337624-S40553162252009080600000) ". CAUTION: Perform this step when the engine is cold.
  2. Remove air duct. Refer to " «COMPONENTS»(ref-337614-S12570176242009080600000) ".
  3. Remove radiator hose (upper). Refer to " «COMPONENTS»(ref-337624-S03011774522009080600000) ".
  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.

Scheme 13

Scheme 13: INSPECTION AFTER REMOVAL
Scheme 13: INSPECTION AFTER REMOVAL
  1. 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.
  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. NOTE: The maximum valve lift amount standard temperature for water control valve is the reference value.
  4. After checking the maximum valve lift amount, lower the water temperature and check the valve closing temperature. VALVE OPENING TEMPERATURE SPECIFICATION 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)
  5. If out of the specification, replace water control valve.

Installation is in the reverse order of removal.

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