Nissan Murano: Removal and Installation / Thermostat and Thermostat Housing

Exploded View

WARNING:

Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure engine coolant escaping from the 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.

CAUTION:

• Perform when engine is cold.

• Do not spill engine coolant on the drive belt.

• Do not spill engine oil on rubber parts such as the drive belt or engine mount insulators.

NOTE:

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

REMOVAL

Drain engine coolant from radiator. Refer to Changing Engine Coolant.

Drain power steering fluid. Refer to Draining and Refilling.

Remove front under cover. Refer to Removal and Installation.

Disconnect intake valve timing control solenoid valve (LH) harness connector.

Remove the E-PSF cover, bracket and motor. Refer to Removal and Installation.

Remove the lower radiator hose.

Remove thermostat assembly (water inlet).

CAUTION:

Do not disassemble thermostat assembly (water inlet). Replace as a unit, (if necessary).

INSPECTION AFTER REMOVAL

• Place a thread so that it is caught in the valves of the thermostat. Immerse fully in a container filled with water. Heat while stirring.

• The valve opening temperature is the temperature at which the valve opens and the thermostat falls from the thread.

• Continue heating. Check the full-open lift amount.

  NOTE:

  The full-open lift amount standard temperature for the thermostat is the reference value.

• After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.

  Thermostat	Standard values
  Valve opening temperature	Refer to Thermostat.
  Full-open lift amount	Refer to Thermostat.
  Valve closing temperature	Refer to Thermostat.

• If thermostat values are out of standard range, replace water inlet and thermostat assembly.

INSTALLATION

Installation is in the reverse order of removal.

• After installation, refill engine coolant and check for leaks. Refer to Changing Engine Coolant and System Inspection.

  CAUTION:

  • Do not reuse thermostat assembly (water inlet) gasket.

  • Do not spill engine coolant in engine compartment. Use a shop cloth to absorb engine coolant.