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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Removal And Installation >> Water Pump >> Removal and Installation - Water Pump Housing

Removal and Installation - Water Pump Housing

REMOVAL 

  1. Drain engine coolant from radiator. Refer to Draining .
    CAUTION:

    Perform this step when the engine is cold.

  2. Remove the drive belt. Refer to Removal and Installation .
  3. Remove the intake manifold. Refer to Removal and Installation .
  4. Disconnect the harness connector from the generator.
  5. Remove the "B" terminal nut. Refer to Exploded View .
  6. Remove the bolts and remove the generator. Refer to Exploded View .
  7. Remove the oil level gauge guide. Refer to Exploded View .
  8. Disconnect the harness retainers from the fuel rail protector.
  9. Remove the fuel rail protector. Refer to Exploded View .
  10. Remove the clamp (1) and disconnect the heater hose (2) from the water inlet pipe (3).
    GNSDB127614Courtesy of NISSAN NORTH AMERICA, INC.
  11. Remove bolts and remove the water inlet pipe.
    CAUTION:

    Do not reuse O-ring.

  12. Remove clamp (3) and disconnect the radiator hose [lower (2)] from the water pump housing (1).
    GNSDB127620Courtesy of NISSAN NORTH AMERICA, INC.
  13. Remove clamps (6) and disconnect the oil cooler outlet hose (5) and water hose (4) from the water pump housing.
  14. Loosen water pump housing bolts in reverse of the order shown in the illustration and remove water pump housing.
    GNSDB127034Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:

    Do not reuse water pump housing gasket.

  15. Loosen water pump bolts in reverse of the order shown in the illustration and remove water pump (if necessary).
    GNSDB127507Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:

    Do not reuse water pump gasket.

INSTALLATION 

Installation is in the reverse order of removal.

CAUTION:
  • Do not reuse O-ring.
  • Do not reuse water pump gasket.
  • Do not reuse water pump housing gasket.