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Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Explained here is how to disassemble with engine stand supporting transmission surface. When using different type of engine stand, note with difference in steps and etc.
  1. Remove engine assembly. Refer to ENGINE ASSEMBLY  .
  2. Remove the parts that may restrict installation of engine to widely use engine stand.
    NOTE: The procedure is described assuming that you use a widely use engine stand holding the surface, to which transmission is installed.
    1. Remove drive plate as follows:
      1. Remove rear plate cover. Refer to OIL PAN AND OIL STRAINER .
      2. Set the ring gear stopper (SST).
      3. Loosen fixing bolts diagonally.
        CAUTION:
        • Be careful not to damage drive plate. Especially, avoid deforming and damaging of signal plate teeth (circumference position).
        • Place drive plate with signal plate surface facing other than downward.
        • Keep magnetic materials away from signal plate.
      Fig 1: Identifying ring gear stopper
      G00753295Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Remove engine rear plate.
  3. Lift the engine with hoist to install it onto the widely use engine stand.
    CAUTION: Use an engine stand that has a load capacity [240 kg (529 pound) or more] large enough for supporting the engine weight.
    • If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the potential risk of overturning the stand.
    • Remove intake manifold upper and intake manifold lower. Refer to INTAKE MANIFOLD .
    • Remove fuel injector and fuel tube assembly. Refer to FUEL INJECTOR AND FUEL TUBE .
    • Remove ignition coil. Refer to IGNITION COIL .
    • Remove rocker cover. Refer to ROCKER COVER .
    • Other removable brackets.
      NOTE: The figure shows an example of widely use engine stand that can hold mating surface of transmission with drive plate and rear plate removed.
      CAUTION: Before removing the hanging chains, make sure the engine stand is stable and there is no risk of overturning.
  4. Drain engine oil and engine coolant from inside of engine.
  5. Remove oil pan and oil strainer. Refer to OIL PAN AND OIL STRAINER .
  6. Remove crankshaft pulley as follows:
    1. Lock crankshaft with a hammer handle or similar tool to loosen fixing bolt.
    2. Pull crankshaft pulley with both hands to remove it.
      CAUTION:
      • Do not remove fixing bolts. Keep loosened fixing bolts in place to protect removed crankshaft pulley from dropping.
      • Do not remove balance weight (inner hexagon bolt) at the front of crankshaft pulley.
  7. Remove the following components and associated parts (The parts listed in step 3 are not included here.)
  8. Remove knock sensor.
    CAUTION: Carefully handle the sensor, avoiding shocks.
  9. Remove piston and connecting rod assembly.
    1. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
    2. Remove connecting rod cap.
    3. Using a hammer handle or similar tool, push piston and connecting rod assembly out to the cylinder head side.
  10. Remove connecting rod bearings.
    CAUTION:
    • When removing them, note the installation position. Keep them in the correct order.
  11. Remove piston rings form piston.
    • Use the 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.
    • Before removing piston rings, check the piston ring side clearance. Refer to PISTON RING SIDE CLEARANCE .
    Fig 2: Removing Piston Rings
    G00753299Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove piston from connecting rod as follows.
    1. Using the snap ring pliers, remove snap ring.
      Fig 3: Removing Piston Pin Snap Ring
      G00753300Courtesy 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 4: Heating Piston Pin
      G00753301Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push out piston pin with stick of outer diameter approximately 20 mm (0.8 in).
    Fig 5: Removing Piston pin
    G00753302Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Remove rear oil seal retainer from cylinder block.
    • Insert a minus-head 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.
  14. Using a minus-head screwdriver or similar tool, and lever off rear oil seal from rear oil seal retainer.
  15. Remove main bearing cap as follows:
    • Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to CRANKSHAFT END PLAY .
    • Loosen bolts in several different steps.
    Fig 6: Main Cap Torque Sequence
    G00753303Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Remove cover attached to the rear right side of cylinder block (next to the starter motor housing).
      NOTE: Bolts (No. 28 shown in the figure) are installed on the inside of cover.
    2. Loosen the side bolts (M10) starting from 30 to 21 to remove.
    3. Loosen main bearing cap sub bolts (M9) starting from 20 to 11 to remove.
    4. Loosen main bearing cap bolts (M12) starting from 10 to 1 to remove.
    5. Using the main bearing cap remover (SST), remove main bearing cap.
    Fig 7: Using main bearing cap remover
    G00753304Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove crankshaft.
  17. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
    • When removing them, note the installation position. Keep them in the correct order.
  18. If pilot converter must be removed, remove it from the rear end of crankshaft using the pilot bearing puller (SST).
    • Removal and installation without the engine stand is possible.
    Fig 8: Identifying pilot bearing puller
    G00753305Courtesy of NISSAN MOTOR CO., U.S.A.
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