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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 890 (Engine Cooling System) >> Water Pump >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain coolant from radiator. Refer to "DRAINING ENGINE COOLANT ."
    CAUTION: Perform when the engine is cold.
  2. Remove engine coolant reservoir tank. Refer to "REMOVAL AND INSTALLATION ".
  3. Reposition IPDM/ER aside. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
  4. Remove RH wheel and tire and the splash shield.
  5. Remove drive belts.
  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.
    Fig 1: Identifying Chain Tensioner And Water Pump Cover
    G04904644Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove chain tensioner cover and water pump cover.
  10. Remove the timing chain tensioner assembly.
    1. Pull the lever down and release the plunger stopper tab.
    2. Insert the stopper pin into the tensioner body hole to hold the lever and keep the stopper tab released.
      NOTE: An alien wrench [(2.5 mm (0.98 in)] is used for a stopper pin as an example.
      Fig 2: Inserting Stopper Pin Into Tensioner Body Hole
      G04886338Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Insert the plunger into the tensioner body by pressing the timing chain slack guide.
    4. Keep the slack guide pressed and hold the plunger in by pushing the stopper pin deeper through the lever and into the tensioner body hole
    5. Make a gap between water pump gear and timing chain, by turning the crankshaft pulley approximately 20° clockwise.
    Fig 3: Identifying Crank Pulley And Turning Angle
    G04886339Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove timing chain tensioner.
    CAUTION: Be careful not to drop bolts inside chain case.
    Fig 4: Identifying 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 5: Identifying Gap Between Water Pump Gear And Timing Chain
    G04886341Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Screw M8 bolts [pitch: 1.25 mm (0.49 in) length: approx. 50 mm F (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 6: Identifying M8 Bolts And Water Pump
    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.