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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1789 (Engine Cooling System) >> Water Pump >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain coolant. 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 IPDM E/R bolts and position aside. Refer to , "REMOVAL AND INSTALLATION OF IPDM E/R ".
  4. Remove right-hand wheel and tire assembly using power tool.
  5. Remove splash shield.
  6. Remove drive belts. Refer to , "REMOVAL AND INSTALLATION ".
  7. Remove idler pulley and idler pulley bracket.
  8. Support engine at lower oil pan with a transmission jack and remove front engine insulator and bracket.

    Refer to , "REMOVAL AND INSTALLATION ".

  9. Remove water drain plug on water pump side of cylinder block.
  10. Remove chain tensioner cover and water pump cover.
    Fig 1: Identifying Chain Tensioner And Water Pump Cover
    G04196310Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove the 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 allen wrench [2.5 mm (0.098 in)] is used for a stopper pin as an example.
      Fig 2: Pulling Lever Down And Release Plunger Stopper Tab
      G04196311Courtesy 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
      G04196312Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove chain tensioner.
    CAUTION: Be careful not to drop chain tensioner bolts inside front timing chain case.
    Fig 4: Removing Chain Tensioner
    G04196313Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove the three water pump bolts. Make a maximum gap between water pump gear and timing chain by turning crankshaft pulley counterclockwise until timing chain loosens on water pump sprocket.
    Fig 5: Removing Three Water Pump Bolts
    G04196314Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Screw M8 bolts [pitch: 1.25 mm (0.49 in) length: approx. 50 mm (1.97 in)] into water pump's 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.
    • Pull straight out while preventing vane from contacting socket in installation area.
    • Remove water pump without causing sprocket to contact timing chain.
  15. Remove M8 bolts and O-rings from water pump.
    Fig 6: Removing M8 Bolts And O-Rings From Water Pump
    G04196315Courtesy of NISSAN MOTOR CO., U.S.A.
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