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Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use an engine stand that has a load capacity [approximately 240kg (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.
  • If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the potential risk of overturning the stand.
NOTE: The following procedures explain how to disassemble the engine with the engine stand fastened to the bell housing. Some steps may be different if using a different type of engine stand.
  1. Remove engine assembly from vehicle. Refer to "REMOVAL AND INSTALLATION ".
  2. Remove the parts that may restrict installation of engine to engine stand.
  3. Lift engine, and mount to engine stand.
    CAUTION: Before removing the hanging chains, make sure engine stand is stable and there is no risk of overturning.
    • Any widely used commercially available engine stand can be used.
      Fig 1: Mounting Engine On Engine Stand Using Tool
      G04894206Courtesy of NISSAN NORTH AMERICA, INC.
  4. Drain engine coolant by removing the cylinder block drain plugs (A), (B), (C) and (D) from cylinder block as shown.
    NOTE: For Canada, (D) is a block heater not a plug.
    Fig 2: Identifying Cylinder Block Drain Plugs
    G04894208Courtesy of NISSAN NORTH AMERICA, INC.
  5. Remove cylinder head. Refer to "REMOVAL AND INSTALLATION ".
  6. Remove sub harness, and remove knock sensors.
    CAUTION: Handle sensor carefully; do not shock or drop.
  7. Remove pilot converter using Tool as necessary.

    Tool number: ST16610001 (J-23907) 

    Fig 3: Removing Pilot Converter Using Tool
    G04894210Courtesy of NISSAN NORTH AMERICA, INC.
  8. Remove piston and connecting rod assembly as follows:
    • Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to "INSPECTION AFTER DISASSEMBLY ".
      CAUTION: Be careful not to drop connecting rod bearing or scratch the surface.
  9. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
  10. Remove connecting rod bearing cap.
  11. Push piston and connecting rod assembly out of the cylinder head side using suitable tool.
    CAUTION: Be careful not to damage the cylinder wall or crankshaft pin resulting from an interference of the connecting rod big end.
    Fig 4: Pushing Piston And Connecting Rod Assembly Out Of Cylinder Head Side Using Tool
    G04878456Courtesy of NISSAN NORTH AMERICA, INC.
  12. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.
    CAUTION: Identify installation position, and store them without mixing them up.
  13. Remove piston rings from piston.
    • Before removing piston rings, check the piston ring side clearance. Refer to "INSPECTION AFTER DISASSEMBLY ".
    • Remove piston rings using piston ring expander or suitable tool.
      CAUTION:
      • When removing piston rings, be careful not to damage piston.
      • Be careful not to damage piston rings by expanding them excessively.
        Fig 5: Removing Piston Rings Using Piston Ring Expander
        G04878457Courtesy of NISSAN NORTH AMERICA, INC.
  14. Remove piston from connecting rod as follows:
    1. Remove snap ring using snap ring pliers.
      Fig 6: Removing Snap Ring Using Snap Ring Pliers
      G04878458Courtesy of NISSAN NORTH AMERICA, INC.
    2. Heat piston to 60° to 70°C (140° to 158°F) with industrial use drier or equivalent.
      Fig 7: Heating Piston Using Drier (60° To 70°)
      G04878459Courtesy of NISSAN NORTH AMERICA, INC.
    3. Push out piston pin with drift which has an outer diameter of approximately 20 mm (0.79 in).
      Fig 8: Pushing Out Piston Pin Using Drift
      G04878460Courtesy of NISSAN NORTH AMERICA, INC.
  15. Remove lower cylinder block bolts.
    • Before loosening lower cylinder block bolts, measure the crankshaft end play. Refer to "INSPECTION AFTER DISASSEMBLY ".
    • Loosen lower cylinder block bolts in reverse order as shown in several different steps.
      NOTE: Use TORX socket (size E14) for bolts No. 1 to 16 (M10 bolt).
      Fig 9: Tightening Sequence Of Lower Cylinder Block Bolts
      G04894216Courtesy of NISSAN NORTH AMERICA, INC.
  16. Remove lower cylinder block.
    • Cut liquid gasket for removal. Refer to "PRECAUTION FOR LIQUID GASKET ".

      Tool number: KV10111100 (J-37228) 

      CAUTION: Be careful not to damage the mounting surfaces.
  17. Remove crankshaft.
  18. Pull rear oil seal out from rear end of crankshaft.
    NOTE: When replacing rear oil seal without removing lower cylinder block, use a suitable tool to pull the rear oil seal installed between crankshaft and cylinder block out.
    CAUTION: Be careful not to damage crankshaft or cylinder block.
  19. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.
    CAUTION:
    • Do not drop main bearing, or scratch the surface.
    • Identify installation positions, and store them without mixing them up.
  20. Remove oil jet.
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