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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 76 (Engine Mechanical) >> Unit Disassembly And Assembly >> Cylinder Block >> Disassembly and Assembly >> Disassembly

Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine assembly. Refer to Removal and Installation .
  2. Remove the drive plate.
  3. Remove pilot converter using suitable tool (A).
    GNSAWBIA2057Z-057Courtesy of NISSAN NORTH AMERICA, INC.
  4. Cut away liquid gasket and remove rear oil seal retainer using suitable tool. Refer to Precaution for Liquid Gasket .
    GNSAWBIA2398Z-398Courtesy of NISSAN NORTH AMERICA, INC.

    Tool number

    : KV10111100 (J-37228)

    CAUTION:
    • Be careful not to damage mounting surface.
    • If rear oil seal retainer is removed, replace it with a new one.
  5. Install the engine on engine stand (A). Any commercially available engine stand (A) can be used.
    GNSAWBIA2413Z-413Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • Use an engine stand that has a load capacity [approximately 240 kg (529 lb) or more] large enough for supporting the engine weight.
    • Before removing the hanging chains, make sure the engine stand is stable and there is no risk of overturning.
  6. Remove the knock sensor.
    CAUTION: Carefully handle sensor to avoid shocking it.
  7. Drain engine coolant. Refer to Changing Engine Coolant .
  8. Drain engine oil. Refer to Changing Engine Oil .
  9. Remove the upper oil pan. Refer to Removal and Installation (Upper Oil Pan) .
  10. Remove the crankshaft pulley.
    • Use a suitable tool to prevent the crankshaft from turning.
  11. Remove the timing chain. Refer to Removal and Installation .
  12. Remove the cylinder head. Refer to Removal and Installation .
  13. Remove the piston and connecting rod assemblies.
    GNSAWBIA2470Z-470Courtesy of NISSAN NORTH AMERICA, INC.
    1. Position the crankshaft pin corresponding to the connecting rod to be removed onto the bottom dead center.
    2. Remove the connecting rod cap.
    3. Using a suitable tool, push the piston and connecting rod assembly out to the cylinder head side.
      • Before removing the piston and connecting rod assembly, check the connecting rod side clearance. Refer to Connecting Rod Bearing .
  14. Remove the connecting rod bearings.
    CAUTION:
    • When removing the connecting rod side bearings, note the installation position. Keep them in the correct order.
  15. Remove the piston rings from the piston.
    GNSAWBIA2415Z-415Courtesy of NISSAN NORTH AMERICA, INC.
    • Use a piston ring expander (A).
    CAUTION:
    • When removing the piston rings, be careful not to damage the piston. Do not expand the rings excessively.
    • Be careful to mark the rings if they are to be reused so they are installed in their original position.
    • Before removing the piston rings, check the piston ring side clearance. Refer to Inspection .
  16. Remove the piston from the connecting rod as follows.
    GNSAWBIA2416Z-416Courtesy of NISSAN NORTH AMERICA, INC.
    1. Using a suitable tool (A), remove the snap ring.
      CAUTION: Do not reuse snap rings, always replace with new ones.
    2. Heat the pistons to 60° - 70°C (140° - 158°F). utilizing suitable tool (A)
      GNSAWBIA2417Z-417Courtesy of NISSAN NORTH AMERICA, INC.
      WARNING: Pistons contain heat. When working, wear protective equipment to avoid getting burned.
    3. Push out the piston pin with a suitable tool with an outer diameter of approximately 20 mm (0.8 in).
      G04073104Courtesy of NISSAN NORTH AMERICA, INC.
  17. Remove the baffle plate from the main bearing beam.
  18. Loosen the bolts in the reverse order shown and remove the main bearing beam, bearing caps and crankshaft.
    GNSJPBIA0439Z-439Courtesy of NISSAN NORTH AMERICA, INC.
    • Before loosening the main bearing cap bolts, measure the crankshaft side clearance.

      Refer to Inspection .

      SYMBOL

      : Engine front

  19. Remove the oil jets (A) and dowel pins.
    GNSAWBIA2418Z-418Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Engine front

  20. Remove the main bearings and thrust bearings from the cylinder block and main bearing caps.
    • When removing them, note the direction and position. Keep them in the correct order for installation.
  21. Remove the water drain plug (A) and (D), connector bolt (E) from the cylinder block.
    GNSAWBIA3050Z-050Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Do not reuse sealing washers (B) and (C).
    NOTE: For Canada, drain plug (A) is a block heater, not a water drain plug.

    SYMBOL

    : Engine front