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Disassembly And Assembly: Disassembly

WARNING: This page is about a different car, the 2004 Infiniti FX45 and 2003 Infiniti FX45. 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 difference in steps, etc.
  1. Remove engine assembly from vehicle, and separate front suspension member, transmission and front final drive from engine. 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 widely use engine holding the surface, to which transmission is installed.
    1. Remove drive plate.
      • Holding ring gear with ring gear stopper (SST).
      • Loosen mounting bolts diagonally order.
      Fig 1: Using Ring Gear Stopper
      G00726531Courtesy of NISSAN MOTOR CO., U.S.A.
      CAUTION:
      • Do not disassemble drive plate.
      • Do not place drive plate 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.
    2. Remove engine rear plate.
      Fig 2: Checking Signal Plate
      G00726532Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Lift engine with hoist to install it onto widely use engine stand.
    CAUTION: Use engine stand that has a load capacity [approximately 240kg (529 lb) or more] large enough for supporting the engine weight.
    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.
    Fig 3: Using Engine Stand
    G00726533Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION: Before removing the hanging chains, make sure the engine stand is stable and there is no risk of overturning.
  4. Drain engine oil. Refer to CHANGING ENGINE OIL .
  5. Drain engine coolant from inside engine by removing water drain plugs "B" as shown in the figure.
    Fig 4: Locating Water Drain Plugs
    G00726534Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Remove the following parts and related parts (The parts listed in step 3 are not included here.)
  7. Remove knock sensor.
    CAUTION: Carefully handle sensor, avoiding shocks.
  8. 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 the piston and connecting rod assembly out to the cylinder head side.
      Fig 5: Pushing Piston & Connecting Rod Assembly Out Of Block
      G00726535Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Remove connecting rod bearings from connecting rod and connecting rod cap.
    CAUTION: Identify installation positions, and store them without mixing them up.
  10. Remove piston rings from piston.
    • Before removing the piston rings, check the piston ring side clearance. Refer to PISTON RING SIDE CLEARANCE .
    • 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 6: Using Piston Ring Expander
    G00726536Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Remove piston from connecting rod as follows:
    1. Using snap ring pliers, remove the snap ring.
      Fig 7: Removing Piston Snap Ring
      G00726537Courtesy 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 8: Heating Piston To Remove Pin
      G00726538Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Push out piston pin with stick of outer diameter approximately 20 mm (0.8 in).
      Fig 9: Removing Piston Pin
      G00726539Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Remove rear oil seal retainer from cylinder block.
    • Insert flat-blade screwdriver or similar tool between rear end of crankshaft counter weight and rear oil seal retainer, and separate liquid gasket to remove.
    CAUTION: Be careful not to damage the mating surface.
  13. Using flat-blade screwdriver or similar tool, pry off rear oil seal from rear oil seal retainer.
  14. 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.
    1. Remove cover attached to the rear left side of cylinder block (next to the starter motor housing).
      NOTE: Bolts (No. 27 shown in the figure) are installed on the inside of cover.
      Fig 10: Identifying Main Bearing Cap Bolt Tightening Sequence
      G00726540Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Loosen 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 main bearing cap remover (SST), remove main bearing cap.
    Fig 11: Using Main Bearing Cap Remover
    G00726541Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Remove crankshaft.
  16. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
    CAUTION: Identify installation positions, and store them without mixing them up.
  17. If the pilot converter must be removed, remove it from the rear end of the crankshaft using pilot bushing puller (SST).
    Fig 12: Using Pilot Bushing Puller
    G00726542Courtesy of NISSAN MOTOR CO., U.S.A.
    • It is possible to remove pilot converter without hoisting engine with engine stand.
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