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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.5L) >> Cylinder Block >> Disassembly and Assembly >> Disassembly

Disassembly and Assembly: Disassembly

WARNING: This page is about a different variant/trim than selected.
  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 drive plate. Fix crankshaft with a ring gear stopper, and remove mounting bolts.
    • Loosen mounting bolts in diagonal order.
      CAUTION:
      • Do not disassemble drive plate.
      • Never place the drive plate with signal late facing down.
      • When handling signal plate, take care not to damage or scratch it.
      • Handle signal plate in a manner that prevents it from becoming magnetized.
    Fig 1: View Of Drive Plate
    G00861095Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove pilot bushing (M/T) or converter (A/T) using Tool.
    Fig 2: Removing Pilot Bushing (M/T) Or Converter (A/T) Using Tool
    G00861096Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Use a seal cutter to cut away liquid gasket and remove rear oil seal retainer. Refer to REMOVAL OF LIQUID GASKET SEALING  .
    CAUTION:
    • Be careful not to damage mounting surface.
    • If rear oil seal retainer is removed, replace it with a new one.
    NOTE: Rear oil seal and retainer form a single part and are handled as an assembly.
    Fig 3: View Of Removing Rear Oil Seal & Retainer
    G00861097Courtesy of NISSAN MOTOR CO., U.S.A.
  11. 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 4: Removing Connecting Rod From Crankshaft
      G02110727Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove the connecting rod bearings.
    CAUTION:
    • When removing the connecting rod side bearings, note the installation position. Keep them in the correct order.
  13. 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 5: Removing Piston Rings
    G02110728Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Remove the piston from the connecting rod as follows.
    1. Using a snap ring pliers, remove the snap ring.
      Fig 6: 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 7: 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 8: Removing Piston Pin
    G02110731Courtesy of NISSAN MOTOR CO., U.S.A.
  15. 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  .
  16. 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 9: View Of Main Bearing Cap Loosening Sequence
    G02110732Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove the oil jets.
  18. 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 10: Locating Knock Pins
    G02110733Courtesy of NISSAN MOTOR CO., U.S.A.
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