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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1003 (Engine Cooling System) >> On-Vehicle Repair >> Water Pump >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain coolant from radiator. Refer to "CHANGING ENGINE COOLANT ".
    CAUTION: Perform when the engine is cold.
  2. Remove engine coolant reservoir tank. Refer to "REMOVAL AND INSTALLATION ".
  3. Remove RH wheel and tire. Refer to "ADJUSTMENT ".
  4. Remove splash shield.
  5. Remove drive belts. Refer to "REMOVAL AND INSTALLATION ".
  6. Remove idler pulley, then the power steering and generator adjusting bars.
  7. Support engine and remove the front engine insulator and bracket. Refer to "REMOVAL AND INSTALLATION ".
  8. Remove water drain plug on water pump side of cylinder block.
  9. Remove IVT valve cover and water pump cover. Refer to "REMOVAL AND INSTALLATION ".
  10. Remove the timing chain tensioner assembly.
    1. Pull the lever down to release the plunger stopper tab.
    2. Insert the stopper pin into the tensioner body hole to hold the lever and keep the plunger stopper tab released.
      NOTE: An allen wrench [(1.2 mm (0.047 in)] is used for a stopper pin as an example.
      Fig 1: Removing Timing Chain Tensioner Assembly
      G04886338Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Insert the plunger stopper tab into the tensioner body by pressing the slack guide.
    4. Keep the slack guide pressed and hold the plunger stopper tab in by pushing the stopper pin deeper through the lever and into the chain tensioner body hole.
    5. Make a gap between water pump gear and timing chain, by turning the crankshaft pulley approximately 20° clockwise.
    Fig 2: Turning Crankshaft Pulley Clockwise
    G04886339Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove chain tensioner.
    CAUTION: Be careful not to drop bolts inside chain case.
    Fig 3: Removing Chain Tensioner
    G04886340Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove the three water pump bolts. Make a gap between water pump gear and timing chain by turning crankshaft pulley counterclockwise until timing chain loosens on water pump sprocket.
    Fig 4: Turning Crankshaft Pulley Counterclockwise
    G04886341Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Screw M8 bolts [pitch: 1.25 mm (0.49 in) length: approx. 50 mm (1.97 in)] into water pumps upper and lower bolt holes until they reach the timing chain case. Then, alternately tighten each bolt for a half turn, and pull out the water pump.
    Fig 5: Removing M8 Bolts
    G04894408Courtesy of NISSAN MOTOR CO., U.S.A.
    • Pull straight out while preventing vane from contacting socket in installation area.
    • Remove water pump without causing sprocket to contact timing chain.
  14. Remove M8 bolts and O-rings from water pump.
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