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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1848 (2004 - Engine Mechanical - Sedan) >> Cylinder Block >> Disassembly and Assembly >> Disassembly
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Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove engine assembly from vehicle, and separate suspension member and transmission from engine. Refer to "ENGINE ASSEMBLY ".
  2. Remove engine mounting brackets. Refer to "ENGINE ASSEMBLY ".
  3. Remove exhaust manifold (right bank). Refer to "EXHAUST MANIFOLD AND THREE WAY CATALYST ".
  4. Install engine sub-attachment with engine stand shaft (SST) to right side of cylinder block.
    • Use spacer to engine rear side.
    Fig 1: Installing Engine Sub-Attachment With Engine Stand Shaft
    G00732770Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Lift engine, and mount it onto engine stand (SST).
    Fig 2: Mounting Engine Onto Engine Stand
    G00732771Courtesy of NISSAN MOTOR CO., U.S.A.
    • A widely use engine stand can be used.
      CAUTION: Use engine stand that has a load capacity [approximately 220 kg (441 lb) or more] large enough for supporting the engine weight.
      NOTE: This example is engine stand for holding at transmission mounting side with flywheel (M/T models) or drive plate (A/T models) removed.
    Fig 3: Supporting Engine With Engine Stand
    G00732772Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Drain engine oil. Refer to CHANGING ENGINE OIL .
  7. Drain engine coolant by removing water drain plugs from cylinder block both sides at "B" and "C" and cylinder block front side at "A" as shown in the figure.
    Fig 4: Removing Water Drain Plugs From Cylinder Block
    G00732773Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Remove clutch cover and clutch disc (M/T models). Refer to CLUTCH DISC, CLUTCH COVER .
  9. Remove flywheel (M/T models) or drive plate (A/T models). Fix crankshaft with ring gear stopper (SST), and remove mounting bolts.
    • Loosen mounting bolts in diagonal order.
    • Use TORX socket (size: T55, commercial service tool) for flywheel mounting bolts.
    Fig 5: Identifying TORX Socket
    G00732774Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Do not disassemble flywheel (M/T models) or drive plate (A/T models).
    • Never place flywheel (M/T models) or drive plate (A/T models) with signal plate 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 6: Inspecting Flywheel
    G00732775Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Remove cylinder head. Refer to "CYLINDER HEAD ".
  11. Remove knock sensor.
    CAUTION: Carefully handle sensor avoiding shocks.
  12. Remove pilot bushing (M/T models) or pilot converter (A/T models) using pilot bushing puller (SST) or suitable tool as necessary.
    Fig 7: Removing Pilot Bushing
    G00732776Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove rear oil seal retainer.
    • Remove by inserting flat-bladed screwdriver between main bearing cap and rear oil seal retainer.
    CAUTION: If rear oil seal retainer is removed, replace it with new one.
    NOTE: Rear oil seal and retainer from a single part are handled as assembly.
  14. Remove baffle plate from main bearing beam.
  15. Remove piston and connecting rod assembly as follows:
    1. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
    2. Remove connecting rod cap.
    3. Using hammer handle or similar tool, push piston and connecting rod assembly out to the cylinder head side.
  16. Remove connecting rod bearings from connecting rod and connecting rod cap.
    CAUTION: When removing them, note the installation position. Keep them in the correct order.
    Fig 8: Removing Connecting Rod Bearings From Connecting Rod And Connecting Rod Cap
    G00732777Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove piston rings form piston.
    • Use piston ring expander (commercial service tool).
    CAUTION:
    • When removing piston rings, be careful not to damage piston.
    • Be careful not to damage piston rings by expanding them excessively.
    Fig 9: Removing Piston Rings Form Piston
    G00732778Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove piston from connecting rod as follows:
    1. Using snap ring pliers, remove snap ring.
      Fig 10: Removing Snap Ring
      G00732779Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Heat piston to 60 to 70°C (140 to 158°F) with industrial use drier or equivalent.
      Fig 11: Heating Piston
      G00732780Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push out piston pin with stick of outer diameter approximately 20 mm (0.79 in).
      Fig 12: Pushing Out Piston Pin With Stick
      G00732781Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove main bearing cap bolts.
    NOTE: Use TORX socket (size E14).
    • Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to "CRANKSHAFT END PLAY ".
    • Loosen bolts in reverse order shown in the figure in several different steps.
    Fig 13: Removing Main Bearing Cap Bolts
    G00732782Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove main bearing beam.
    Fig 14: Removing Main Bearing Beam
    G00732783Courtesy of NISSAN MOTOR CO., U.S.A.
  21. Remove main bearing caps.
    • Using main bearing cap bolts, remove main bearing cap while shaking it back-and-forth.
    Fig 15: Removing Main Bearing Caps
    G00732784Courtesy of NISSAN MOTOR CO., U.S.A.
  22. Remove crankshaft.
  23. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
    CAUTION: Identify installation positions, and store them without mixing them up.
  24. Remove oil jet.
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