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Disassembly And Assembly: Disassembly

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine assembly. Refer to ENGINE ASSEMBLY  .
  2. Install the engine on the engine stand.
  3. Remove the knock sensor.
  4. Drain the engine of all coolant and oil.
  5. Remove the oil pan. Refer to REMOVAL AND INSTALLATION  .
  6. Remove the timing chain. Refer to REMOVAL  .
  7. Remove the cylinder head. Refer to REMOVAL AND INSTALLATION  .
  8. Remove the piston and connecting rod assemblies.
    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 hammer handle or similar 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  .
      Fig 1: Removing Connecting Rod From Crankshaft
      G02110727Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove the connecting rod bearings.
    CAUTION:
    • When removing the connecting rod side bearings, note the installation position. Keep them in the correct order.
  10. Remove the piston rings from the piston.
    • Use a piston ring expander.
    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.
    Fig 2: Removing Piston Rings
    G02110728Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove the piston from the connecting rod as follows.
    1. Using a snap ring pliers, remove the snap ring.
      Fig 3: Removing Piston Pin Snap Ring
      G02110729Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Heat the pistons to 60° - 70°C (140° - 158°F).
      Fig 4: Heating Up Pistons
      G02110730Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push out the piston pin with a suitable tool, with an outer diameter approximately 20 mm (0.8 in).
    Fig 5: Removing Piston Pin
    G02110731Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove the rear oil seal retainer from the cylinder block.
    • Insert a screwdriver or similar tool between the rear end of the crankshaft counter weight and rear oil seal retainer, and separate the liquid gasket to remove.
    CAUTION: Be careful not to damage the mating surface.
    NOTE: When replacing the rear oil seal during on-vehicle service, it is necessary to remove the oil pan. Refer to REMOVAL AND INSTALLATION  .
  13. Loosen the bolts in the numerical order as shown and remove the main bearing beam, bearing caps and crankshaft.
    • Before loosening the main bearing cap bolts, measure the crankshaft side clearance.

      Refer to CRANKSHAFT  .

    Fig 6: View Of Main Bearing Cap Loosening Sequence
    G02110732Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove the oil jets.
  15. 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.
    Fig 7: Locating Knock Pins
    G02110733Courtesy of NISSAN MOTOR CO., U.S.A.
  16. If the pilot bushing (M/T) or converter (A/T) must be removed, remove it from the rear end of the crankshaft using a pilot bearing puller.
    Fig 8: Removing Pilot Bushing (M/T) Or Converter (A/T)
    G02110734Courtesy of NISSAN MOTOR CO., U.S.A.
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