Home ReviewsRefund
Home/Nissan/Altima/Nissan Altima L33 (2012-2015)/Repair manual/Cooling Fan/Engine Cooling System (Coupe): Removal & Installation
Contents Wiring diagrams Section: Cooling Fan All sections

Engine Cooling System (Coupe): Removal & Installation Nissan Altima L33

Cooling Fan 6 illustrations ~845 words

REMOVAL

  1. Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) ".
  2. Remove front bumper fascia. Refer to " «REMOVAL AND INSTALLATION»(ref-592019-S16772029082014010800000) ".
  3. Remove front air duct. Refer to " «REMOVAL AND INSTALLATION»(ref-592016-S14803150462014010800000) ".
  4. Remove battery tray. Refer to " «REMOVAL AND INSTALLATION (BATTERY TRAY)»(ref-592011-S22806689062014010800000) ".
  5. Remove A/C condenser. Refer to " «REMOVAL AND INSTALLATION FOR CONDENSER»(ref-592013-S01569913612014010800000) ".
  6. Disconnect reservoir hose from radiator hose (upper) connector.
  7. Disconnect radiator hose (upper) and (lower).
  8. Disconnect the CVT oil cooler hoses.
  9. Remove radiator.
CAUTIONDo not damage or scratch the radiator core when removing.

INSTALLATION

Installation is in the reverse order of removal.

  1. Partially drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) ".
  2. Remove front air duct. Refer to " «REMOVAL AND INSTALLATION»(ref-592016-S14803150462014010800000) ".
  3. Disconnect radiator hose (upper).
  4. Disconnect fan motor connectors.
  5. Remove fan shroud and motor assembly.

Installation is in the reverse order of removal.

  1. After installation refill engine coolant and check for leaks. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) " and " «SYSTEM INSPECTION»(ref-592018-S16503750682014010800000) ". CAUTION: Do not spill coolant in engine compartment. Use a shop cloth to absorb coolant.
  2. Cooling fan is controlled by ECM. For details, refer to " «SYSTEM DESCRIPTION»(ref-592026-S13909693412014010800000) ".

Scheme 66

Scheme 66: Removal and Installation
Scheme 66: Removal and Installation
WARNINGNever 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.
CAUTIONWhen removing water pump assembly, be careful not to get coolant on drive belt. Water pump cannot be disassembled and should be replaced as a unit. After installing water pump, connect hose and clamp securely, then check for leaks using radiator cap tester. Perform when the engine is cold.
  1. Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) ".
  2. Remove front air duct. Refer to " «REMOVAL AND INSTALLATION»(ref-592016-S14803150462014010800000) ".
  3. Remove RH wheel and tire assembly. Refer to " «ADJUSTMENT»(ref-592020-S33110986762014010800000) ".
  4. Remove generator and generator bracket. Refer to " «REMOVAL AND INSTALLATION»(ref-592027-S14904319922014010800000) ".
  5. Remove the water pump and water pump gasket.
CAUTIONHandle the water pump vane so that it does not contact any other parts. Water pump cannot be disassembled and should be replaced as an assembly.

Note. If it is necessary to remove the water pipe, the exhaust manifold and three way catalyst assembly must be removed. Refer to " REMOVAL AND INSTALLATION ".

Scheme 67

Scheme 67: INSPECTION AFTER REMOVAL
Scheme 67: INSPECTION AFTER REMOVAL
  1. Visually check that there is no significant dirt or rusting on the water pump body and vane.
  2. Check that there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
  3. If the water pump does not perform properly, replace the water pump assembly.

Installation is in the reverse order of removal.

  1. When inserting water pipe end to cylinder block, apply a mild soap to O-ring. Then insert it immediately. CAUTION: Do not reuse O-ring.
  1. Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) ".
  2. Remove the front air duct. Refer to " «REMOVAL AND INSTALLATION»(ref-592016-S14803150462014010800000) ".
  3. Remove engine under cover. Refer to " «REMOVAL AND INSTALLATION»(ref-592019-S16772029082014010800000) ".
  4. Remove radiator hose (lower) from the engine coolant inlet side.
  5. Remove engine coolant inlet, thermostat and O-ring. CAUTION: Do not reuse O-ring.

Scheme 68

Scheme 68: INSPECTION AFTER REMOVAL
Scheme 68: INSPECTION AFTER REMOVAL
  1. 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.
  2. The valve opening temperature is the temperature at which the valve opens and the falls from the thread.
  3. Continue heating. Check the full-open lift amount. NOTE: The full-open lift amount standard temperature for the thermostat is the reference value.
  4. 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»(ref-592018-S25405765552014010800000) " Full-open lift amount Refer to " «THERMOSTAT»(ref-592018-S25405765552014010800000) " Valve closing temperature Refer to " «THERMOSTAT»(ref-592018-S25405765552014010800000) "
  5. If valve setting at measured values are out of standard range, replace thermostat.

Installation is in the reverse order of removal.

Scheme 69

Scheme 69: INSTALLATION
Scheme 69: INSTALLATION
  1. Install the engine coolant temperature sensor. Use Genuine RTV Silicone Sealant or equivalent. Refer to " «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-592010-S39097878722014010800000) ".
  2. Install the thermostat with the whole circumference of the flange part fitting securely inside the rubber ring. CAUTION: Do not reuse O-ring.
  3. Install the thermostat with the jiggle valve facing upwards. The position deviation may be within the range of ±10°.
  4. If necessary, to install the heater pipe, first apply a mild soap to the O-ring and then quickly insert the pipe into the housing. CAUTION: Do not reuse O-ring.

Scheme 70

Scheme 70: Removal and Installation
Scheme 70: Removal and Installation
WARNINGNever 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.
CAUTIONPerform when the engine cold.

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

  1. Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-592018-S06646162382014010800000) ".
  2. Remove the engine room cover using power tool.
  3. Remove the air cleaner and air duct assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-592016-S14803150462014010800000) ".
  4. Remove the upper radiator hose, heater pipe, electric throttle control actuator inlet hose, and heater hose.
  5. Remove the water control valve, engine coolant outlet, O-ring and gasket. CAUTION: Do not reuse O-ring. Do not reuse gasket.

Installation is in the reverse order of removal.

  1. Install the engine coolant temperature sensor. Use Genuine RTV Silicone Sealant or equivalent. Refer to " «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-592010-S39097878722014010800000) ".
  2. Install the water control valve with the whole circumference of the flange part fitting securely inside the rubber ring. CAUTION: Do not reuse O-ring.
  3. Install the water control valve with the up-mark facing up and the frame center part facing upwards. The position deviation may be within the range of ±10°.
  4. Install the heater pipe, first apply a mild soap to the O-ring and quickly insert the heater pipe into the housing. CAUTION: Do not reuse O-ring.

Scheme 71

Scheme 71: Disassembly and Assembly of Cooling Fan
Scheme 71: Disassembly and Assembly of Cooling Fan

More articles — Engine Cooling System (Coupe)