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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 468 (Engine Cooling System (4.0L)) >> Removal And Installation >> Water Pump >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove front under cover using power tool. Refer to Removal and Installation - Front Bumper .
  2. Drain engine coolant from radiator. Refer to Changing Engine Coolant .
    CAUTION:
    • Perform this step when engine is cold.
    • Do not spill engine coolant on drive belts.
  3. Remove air duct and resonator assembly. Refer to Removal and Installation .
  4. Remove reservoir tank hose and water hose.
  5. Unclip the reservoir overflow hose from the radiator shroud.
  6. Remove the reservoir tank bracket and reservoir tank.
  7. Unclip the transmission lines from the radiator shroud.
  8. Disconnect the harness connector from motor driven cooling fan.
  9. Remove the radiator shrouds (LH and RH) (lower).
    • Release the tabs, pull radiator shrouds (LH and RH) (lower) rearward and down to remove.
  10. Remove the radiator shroud (upper) bolts and remove the radiator shroud (upper).
  11. Remove radiator hose (upper).
  12. Remove the drive belt. Refer to Removal and Installation .
  13. Remove cooling fan blade assembly and fan pulley (Crankshaft driven type).
  14. Set No. 1 cylinder at TDC.
    • Rotate crankshaft pulley clockwise to align timing mark (A) (grooved line without color) with timing indicator (B).
      GNSAWBIA0719Z-719Courtesy of NISSAN NORTH AMERICA, INC.
  15. Remove water drain plug (front) (1).
    G08161852Courtesy of NISSAN NORTH AMERICA, INC.
  16. Remove the chain tensioner cover and water pump cover from front timing chain case using Tool.
    G04073555Courtesy of NISSAN NORTH AMERICA, INC.

    Tool number

    : KV10111100 (J-37228)
  17. Remove timing chain tensioner (primary) as follows:
    1. Loosen clip of timing chain tensioner (primary), and release plunger stopper (1).
      G04146976Courtesy of NISSAN NORTH AMERICA, INC.
    2. Depress plunger into tensioner body by pressing slack guide (2).
    3. Keep slack guide pressed and insert stopper pin through the tensioner body hole and plunger groove (3) to hold plunger in.
    4. Remove timing chain tensioner bolts and remove timing chain tensioner (primary).
      G04146978Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Be careful not to drop timing chain tensioner bolts inside timing chain case.
  18. Remove the three water pump bolts (A). Make a gap between water pump sprocket (1) and timing chain by carefully turning crankshaft pulley (2) counterclockwise until timing chain loosens on water pump sprocket (1).
    GNSAWBIA0904Z-904Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Be careful not to drop water pump bolts inside the timing chain case.
  19. 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.
    G04073560Courtesy of NISSAN NORTH AMERICA, INC.
  20. Hold the timing chain to the side using a suitable tool and alternately tighten the M8 bolts for a half turn until the water pump can be removed.
    GNSAWBIA2670Z-670Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Place a suitable shop cloth below the water pump housing to prevent any engine coolant from dripping into the timing chain case.
    • Remove water pump without causing sprocket to contact timing chain.
    • Pull water pump straight out while preventing vane from contacting socket in installation area.
    • It may be necessary to adjust the timing chain until it loosens enough to remove the water pump.
  21. Remove M8 bolts and O-rings from water pump.
    CAUTION: Do not reuse O-rings.
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